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Guides

What are the rarest gemstones?

 

The following 10 gems are the world's rarest and most valuable gemstones.

•Benitoite. ...

•Grandidierite. ...

•Black Opal. ...

•Red Beryl. ...

•Jadeite. ...

•Taaffeite. ...

•Alexandrite. ...

•Painite. According to many, including the Guinness Book of World Record, Painite is the world's rarest mineral.

 

What are the hardest gemstones?

 

“Well the top three hardest are Diamond, Sapphire and Ruby, and an easy way to remember is: red-white & blue stones! The hardness of a gemstone is measured on its place on Mohs scale of hardness. 10 on Mohs scale being the hardest known naturally occurring substance– and the honor goes to the diamond.”

 

What are the four most precious stones?

 

5 Most Precious Stones

•Diamond. Diamonds are by-far the most popular precious stones. ...

•Emerald. Emeralds are a rare variety of the mineral beryl. ...

•Sapphire. Sapphires are one of the hardest stones on the planet; only diamonds surpass them in hardness.

•Ruby. The cost of a ruby is primarily decided by its color. ...

•Red Coral.

 

 

Is aquamarine a rare gem?

 

“Aquamarine Gemstone Information. Aquamarine is a member of the beryl family, which also includes emerald, morganite and yellow beryl. ... Although aquamarine gemstones can be easily confused with blue topaz, aquamarine is much more rare and valuable.”

 

What is the least expensive gemstone?

 

A look at top 8 Affordable & Best Semi-Precious Gemstones

•Tiger's eye: Most people are familiar with this stone because these are very common and easily available. ...

•Rose quartz: Many types of Rose quartz are currently available and they are affordable, as well. ...

•Amethyst: A type of quartz, this stone comes in a purple color. ...

•Agate: ...

•Citrine: ...

•Jasper: ...

•Onyx: ...

•Turquoise:

 

What is the toughest gemstone?

 

“In this case, Diamond is not the toughest gemstone, in fact it can be very brittle. Jadeite Jade is by far the toughest gemstone. It is extremely hard to break and can worn for many years without a crack appearing. A very important factor that affects toughness is cleavage.”

 

Is Ruby rarer than diamond?

 

“In nature diamonds are rare, but not so in the gem world. Rubies and sapphires are different colored varieties of the mineral corundum. ... Gem-quality corundum is quite a bit rarer, consisting of only a percent or so of all the corundum found. The most common of the gem grade corundum is blue sapphire.”

 

What is the rarest birthstone?

 

“Alexandrite the traditional birthstone for June is a beautiful, but very rare stone. It is very difficult to find natural alexandrite. Most Alexandrites on the market are synthetic or created.”

 

What is stronger than a diamond?

 

“(PhysOrg.com) -- Currently, diamond is regarded to be the hardest known material in the world. But by considering large compressive pressures under indenters, scientists have calculated that a material called wurtzite boron nitride (w-BN) has a greater indentation strength than diamond.”

 

How much is amethyst worth?

 

“Not true. With amethyst, value is all about color. I''ve seen ten carat amethysts sell for $10 for the whole stone, and I''ve seen 2 carat amethysts sell for $50/ct. In these cases, the pricing was due to the color.”

 

What is more precious than a diamond?

 

“Rare gems exhibited at the Tucson Gem, Mineral & Fossil Showcase in 2014. Diamonds are one of the most valuable precious stones around, but not because diamonds are especially rare. In fact, high-quality emeralds, rubies, and sapphires are all rarer in nature than diamonds.”

 

How much is a aquamarine stone worth?

 

“Clarity, or the number of inclusions, often determines the quality of a stone. Prices also vary depending on color. Low quality to mid-range aquamarines can range from $5 to $100 per carat. Past 10 carats, mid-range aquamarines can cost between $150 and $200 per carat.”

 

Is Aquamarine worth anything?

 

“Aquamarine Value. ... A 50-ct aquamarine will be worth the same price per carat as a single carat gem of equal quality. The gem price is dependent on clarity, depth of color, and to a lesser extent the purity of color. For more detailed information on aquamarine quality factors, consult our aquamarine buying guide.”

 

Is aquamarine a semi precious stone?

 

“Aquamarine Gemstone Information. Aquamarine is a blue to green-blue gem-quality variety of beryl. The beryl group of gemstones is most famous for chromium-rich green emerald, one of the 'precious four' gems (diamond, sapphire and ruby are the remaining three).”

 

How much is sapphire worth?

 

“Prices for faceted sapphire start at about $20-30 per carat and rise according to size and color. In gemstones weighing over 1 carat, clean beryllium-treated green sapphire is usually priced at around $75-100 per carat, and yellow and red-orange "Songea sapphire" pieces at around $100-150 per carat.”

 

What is the world's most expensive gemstone?

 

Other most expensive gemstones are as follows:

•Blue Diamond – $3.93 million per carat.

•Musgravite – $35,000 per carat.

•Jadeite – $20,000 per carat.

•Alexandrite – $12,000 per carat.

•Red Beryl – $10,000 per carat.

•Padparadscha Sapphire – $8,000 per carat.

•Benitoite – $3,800 per carat.

•Black Opal – $3,500 per carat.

 

 

What is the most expensive metal?

 

A good handheld XRF can tell you what metal you have within the Most Rare Gold Minerals.

•Rhodium. This extremely rare, valuable and silvery-colored metal is commonly used for its reflective properties. ...

•Platinum. ...

•Gold. ...

•Ruthenium. ...

•Iridium. ...

•Osmium. ...

•Palladium. ...

•Rhenium.

 

 

What is the hardest stone?

 

“Although diamond is probably the hardest natural material with rating 10 on Mohs scale, granite is by far the strongest and most durable of natural stones measuring 6 on Mohs scale that are used as a construction material. In fact, it is the most-popular dimension stone that is widely used all over the world.”

 

Can anything scratch a diamond?

 

“The diamond is the hardest mineral found on this earth with the hardness of 10. It is 40 times harder than Corundum which is 9 on the Moh's Scale. ... This is the key concept that makes it even possible to cut diamonds by the way. A diamond can scratch other gems but it can only be cut or scratched by itself.”

 

How much is a 1 carat ruby worth?

 

“Ed., list a wide range of wholesale prices for faceted gem rubies. Prices are dependent on origin, color, size, and clarity: from a low of $100 to $15,000/ct. Myanmar or Burmese stones in ½ to 1 carat sizes with slightly purplish red color and light inclusions range from $300 to $3,000/ct., for example.”

 

Is aquamarine a crystal?

 

“The name Aquamarine comes from the Latin aqua marinus, meaning "water of the sea," and refers to its sparkling ocean-like color. The pale blue, transparent crystal is a member of the Beryl family. Its color, sometimes bluish green, is caused by iron oxides within the chemical makeup of the stone.”

 

What are the benefits of Aquamarine?

 

Aquamarine also:

•Heals emotional trauma.

•Cools high temper and conflict.

•Relieves stress.

•It helps get in touch with suppressed emotions.

•Brings peace.

•Clears the mind.

•Calms the heart.

•It helps speak the truth.

 

 

What are the most expensive semi precious stones?

 

Now, without further ado, let's jump ahead to the top 10 list of most expensive gemstones in the world.

•Taaffeite – $2,500 per carat. ...

•Demantoid Garnet – $3,300 per carat. ...

•Black Opal – $3,500 per carat. ...

•Benitoite – $3,800 per carat. ...

•Padparadscha Sapphire – $8,000 per carat. ...

•Red Beryl – $10,000 per carat.

 

 

What color should aquamarine be?

 

“Aquamarine Color and Heat Treatment. One of the most popular misconceptions about aquamarine is that its color should be just blue. Most consumers do prefer a dark blue aquamarine color. However, natural, untreated aquamarine is gemologically described as a transparent, blueish green variety of beryl.”

 

 

What are the healing properties of Aquamarine?

 

“Aquamarine Healing Properties. Aquamarine is a stone of courage. Its calming energies reduce stress and quiet the mind. Aquamarine has an affinity with sensitive people.”

 

How do you clean aquamarine?

 

“Cleaning Aquamarine. The easiest method of care for aquamarines is to wash them in warm, soapy water: Fill a small bowl with warm water and add a small amount of dish soap. Let your jewelry soak for several minutes and then use a soft bristled toothbrush in order to clean the stone.”

 

What does it mean if your birthstone is Aquamarine?

 

“March: The March birthstone is aquamarine, which has a lovely sea-green color that will look fantastic against gold and silver materials. This gemstone is believed to help the wearer make new friends and even manifest affection in others. April: The April birthstone is diamond.”

 

Why is Aquamarine The birthstone of March?

 

“Happy birthday to all you March babies. Your month has 2 birthstones – the aquamarine and the bloodstone. Aquamarines vary in color from deep blue to blue-green of different intensities, caused by traces of iron in the beryl crystal. ... However, yellow beryl stones can be heated to change them to blue aquamarines.”

 

Are sapphires worth more than diamonds?

 

“The precious categorization is a reference to value: a really fine ruby, emerald or sapphire can be priced higher per carat than a diamond. Sapphires are extremely hard and durable, so they will last a forever in a piece of jewelry, and rubies and emeralds are extremely rare.”

 

What is the most expensive color of sapphire?

 

“Most Valuable Sapphire Gemstones. You will often hear that the rarest and most expensive sapphire is the pink-orange padparadscha from Sri Lanka. But while the padparadscha is extremely rare, the finest blue sapphires are the ones that receive the top prices at auction.”

 

Can aquamarine be white?

 

“There are no white aquamarines. There is a mineral species known as beryl. If, and only if, iron impurities cause a piece of beryl to appear blue to blue-green can it be called an aquamarine. If beryl is any other color, it gets a different name.”

 

 

Is Sapphire expensive?

 

“Sapphires can range in price from $50 per carat to more than $10,000 per carat, with the most expensive sapphire sold on record costing $135,000 per carat. The price of a sapphire is determined mostly by quality, and a large, low-quality sapphire can be a lot cheaper than a small yet very high-quality sapphire.”

 

What are the healing properties of amethyst?

 

“Amethyst has healing powers to help with physical ailments, emotional issues, and in Energy Healing and Chakra balancing. Amethyst crystal therapies are primarily associated with physical ailments of the nervous system, the curing of nightmares and insomnia, and balancing the crown chakra.”

 

What is Bloodstone used for?

 

“Bloodstone is a powerful healing stone used for thousands of years for its healing properties. It is often used to purify and detoxify the body. Great at grounding negative energy and cleansing the body, Bloodstone brings love into any situation and helps ground the negative energies surrounding that issue.”

 

Are aquamarine stones durable?

 

“For example, diamond is only one number away, but it's many times harder than gems in the corundum family. Aquamarine is 7.5 to 8 on the Mohs scale, so it is a durable gemstone for jewelry as long as it is treated with care to protect it against scratching and hard knocks.”

 

How hard is Amethyst?

 

Gemstone Family Classification

Gemstone Name

Specific Gravity

Mohs Hardness

Amethyst

2.65

7.0 Mohs

Andradite

3.50 - 4.30

6.5 - 7.5 Mohs

Aquamarine

2.63 - 2.91

7.5 - 8.0 Mohs

Balas Ruby

3.58 - 4.06

8.0 Mohs

 

Gemstone Family Classification

The gemstones listed here show every color in the rainbow. Even with such variety of colors, patterns and shapes - they can be broken down into 16 different families based on their chemical composition. The MOHS hardness is shown for each of the more common gemstones.

Gemstone Name

Specific Gravity

Mohs Hardness

Index of Refraction

Gemstone Family

Achorite

3.03 - 3.25

7.0 - 7.5 Mohs

1.610-1.661

Tourmaline

Agate

2.65

7.0 Mohs

1.530 - 1.550

Quartz

Alexandrite

3.68 - 3.78

8.5 Mohs

1.746 - 1.755

Chrysoberyl

Almandine

3.50 - 4.30

6.5 - 7.5 Mohs

1.750 - 1.830

Garnet

Almandine Spinel

3.58 - 4.06

8.0 Mohs

1.708 - 1.735

Spinel

Almandine-Spessartine

3.50 - 4.30

6.5 - 7.5 Mohs

1.750 - 1.830

Garnet

Amazonite

2.55 - 2.76

6.0 - 6.5 Mohs

1.518 - 1.526

Feldspar

Amethyst

2.65

7.0 Mohs

1.532 - 1.554

Quartz

Andradite

3.50 - 4.30

6.5 - 7.5 Mohs

1.880 - 1.940

Garnet

Aquamarine

2.63 - 2.91

7.5 - 8.0 Mohs

1.567-1.590

Beryl

Balas Ruby

3.58 - 4.06

8.0 Mohs

1.708 - 1.735

Spinel

Black Opal

1.98 - 2.25

5.5 - 6.5 Mohs

1.440 - 1.460

Opal

Bloodstone

2.65

7.0 Mohs

1.535 - 1.539

Quartz

Brazilian Emerald

3.03 - 3.25

7.0 - 7.5 Mohs

1.610 - 1.640

Tourmaline

Cairngorm

2.65

7.0 Mohs

1.540 - 1.550

Quartz

Carnelian

2.65

7.0 Mohs

1.530 - 1.550

Quartz

Cat’s Eye

3.68 - 3.78

8.5 Mohs

1.746 - 1.755

Chrysoberyl

Chalcedony

2.65

7.0 Mohs

1.544 - 1.553

Quartz

Chlorspinel

3.58 - 4.06

8.0 Mohs

1.712 - 1.717

Spinel

Chrome Pyrope

3.50 - 4.30

6.5 - 7.5 Mohs

1.730 - 1.760

Garnet

Chrysoberyl

3.68 - 3.78

8.5 Mohs

1.746 - 1.755

Chrysoberyl

Chrysoprase

2.65

7.0 Mohs

1.530 - 1.550

Quartz

Citrine

2.65

7.0 Mohs

1.532 - 1.554

Quartz

Color-Change Garnet

3.50 - 4.30

6.5 - 7.5 Mohs

1.730 - 1.760

Garnet

Demantoid

3.50 - 4.30

6.5 - 7.5 Mohs

1.880 - 1.900

Garnet

Diamond

3.51

10 Mohs

2.417

Diamond

Dravite

3.03 - 3.25

7.0 - 7.5 Mohs

1.610-1.661

Tourmaline

Emerald

2.63 - 2.91

7.5 - 8.0 Mohs

1.560 - 1.605

Beryl

Feldspar

2.55 - 2.76

6.0 - 6.5 Mohs

1.518 - 1.572

Feldspar

Fire Opal

1.98 - 2.25

5.5 - 6.5 Mohs

1.430 - 1.460

Opal

Garnet

3.50 - 4.30

6.5 - 7.5 Mohs

1.730 - 1.760

Garnet

Ghanospinel

3.58 - 4.06

8.0 Mohs

1.712 - 1.747

Spinel

Goshenite

2.63 - 2.91

7.5 - 8.0 Mohs

1.570 - 1.600

Beryl

Green Quartz

2.65

7.0 Mohs

1.540-1.550

Quartz

Grossular

3.50 - 4.30

6.5 - 7.5 Mohs

1.880 - 1.940

Garnet

Heliodore

2.63 - 2.91

7.5 - 8.0 Mohs

1.570 - 1.600

Beryl

Heliotrope

2.65

7.0 Mohs

1.535 - 1.539

Quartz

Hessonite

3.50 - 4.30

6.5 - 7.5 Mohs

1.730 - 1.760

Garnet

Hyacinth

4.60 - 4.70

7.5 Mohs

1.777 - 1.987

Zircon

Indicolite

3.03 - 3.25

7.0 - 7.5 Mohs

1.610 - 1.640

Tourmaline

Jade

2.90 - 3.10

6.0 Mohs

1.640 - 1.667

Jade

Jadeite

3.23 - 3.43

6.5 - 7.0 Mohs

1.640 - 1.667

Jade

Jargon

4.60 - 4.70

7.5 Mohs

1.777 - 1.987

Zircon

Jasper

2.65

7.0 Mohs

1.540 - 1.550

Quartz

Labradorite

2.55 - 2.76

6.0 - 6.5 Mohs

1.560 - 1.572

Feldspar

Lapis Lazuli

2.70 - 2.90

5.0 - 5.5 Mohs

1.500 - 1.550

Lapis Lazuli

Malaia

3.50 - 4.30

6.5 - 7.5 Mohs

1.880 - 1.940

Garnet

Matura Diamond

4.60 - 4.70

7.5 Mohs

1.777 - 1.987

Zircon

Moonstone

2.55 - 2.76

6.0 - 6.5 Mohs

1.518 - 1.526

Feldspar

Morganite

2.63 - 2.91

7.5 - 8.0 Mohs

1.585 - 1.594

Beryl

Morion

2.65

7.0 Mohs

1.540 - 1.550

Quartz

Nephrite

2.90 - 3.10

6.0 Mohs

1.600 - 1.641

Jade

Onyx

2.65

7.0 Mohs

1.531 - 1.539

Quartz

Opal

1.98 - 2.25

5.5 - 6.5 Mohs

1.440 - 1.460

Opal

Orthoclase

2.55 - 2.76

6.0 - 6.5 Mohs

1.518 - 1.526

Feldspar

Peridot

3.22 - 3.45

7.0 Mohs

1.635 - 1.690

Peridot

Peristerite

2.55 - 2.76

6.0 - 6.5 Mohs

1.560 - 1.572

Feldspar

Praziolite

2.65

7.0 Mohs

1.540 - 1.550

Quartz

Pyrope

3.50 - 4.30

6.5 - 7.5 Mohs

1.730 - 1.760

Garnet

Pyrope-Almandine

3.50 - 4.30

6.5 - 7.5 Mohs

1.730 - 1.760

Garnet

Pyrope-Spessartine

3.50 - 4.30

6.5 - 7.5 Mohs

1.730 - 1.760

Garnet

Quartz

2.65

7.0 Mohs

1.544 - 1.553

Quartz

Red Beryl

2.63 - 2.91

7.5 - 8.0 Mohs

1.570 - 1.598

Beryl

Rhodolite

3.50 - 4.30

6.5 - 7.5 Mohs

1.740 - 1.770

Garnet

Rock Crystal

2.65

7.0 Mohs

2.000

Quartz

Rose Quartz

2.65

7.0 Mohs

1.540 - 1.550

Quartz

Rubellite

3.03 - 3.25

7.0 - 7.5 Mohs

1.610 - 1.640

Tourmaline

Rubicelle

3.58 - 4.06

8.0 Mohs

1.712 - 1.717

Spinel

Ruby

3.96 - 4.05

9.0 Mohs

1.757 - 1.779

Corundum

Sapphire

3.96 - 4.05

9.0 Mohs

1.757 - 1.779

Corundum

Sapphire Spinel

3.58 - 4.06

8.0 Mohs

1.712 - 1.747

Spinel

Siberite

3.03 - 3.25

7.0 - 7.5 Mohs

1.625-1.675

Tourmaline

Smoky Quartz

2.65

7.0 Mohs

1.540 - 1.550

Quartz

Spessartine

3.50 - 4.30

6.5 - 7.5 Mohs

1.790 - 1.810

Garnet

Spinel

3.58 - 4.06

8.0 Mohs

1.712 - 1.717

Spinel

Sunstone

2.55 - 2.76

6.0 - 6.5 Mohs

1.560 - 1.572

Feldspar

Topaz

3.50 - 3.60

8.0 Mohs

1.607 - 1.627

Topaz

Topazolite

3.50 - 4.30

6.5 - 7.5 Mohs

1.880 - 1.940

Garnet

Tourmaline

3.03 - 3.25

7.0 - 7.5 Mohs

1.603 - 1.655

Tourmaline

Tsavorite

3.50 - 4.30

6.5 - 7.5 Mohs

1.739 - 1.744

Garnet

Turquoise

2.60 - 2.80

5.0 - 6.0 Mohs

1.610 - 1.650

Turquoise

Uvarovite

3.50 - 4.30

6.5 - 7.5 Mohs

1.740 - 1.870

Garnet

Verdilite

3.03 - 3.25

7.0 - 7.5 Mohs

1.612-1.638

Tourmaline

Water Opal

1.98 - 2.25

5.5 - 6.5 Mohs

1.440 - 1.460

Opal

White Opal

1.98 - 2.25

5.5 - 6.5 Mohs

1.440 - 1.460

Opal

Zircon

4.60 - 4.70

7.5 Mohs

1.777 - 1.987

Zircon

 

What is the most expensive color of sapphire?

 

“Most Valuable Sapphire Gemstones. You will often hear that the rarest and most expensive sapphire is the pink-orange padparadscha from Sri Lanka. But while the padparadscha is extremely rare, the finest blue sapphires are the ones that receive the top prices at auction.”

 

Do lab created white sapphires look like diamonds?

 

“However, a diamond will sparkle more than than a white sapphire (if you want a stone that is as sparkly as a diamond, but more affordable, look into our Forever Brilliant Moissanite collection). As far as longevity, both white sapphires and diamonds are going to last for a very long time.”

 

What is the true color of a sapphire stone?

 

“Sapphire is the most precious and valuable blue gemstone. It is a very desirable gemstone due to its excellent color, hardness, durability, and luster. In the gem trade, Sapphire without any color prefix refers to the blue variety of the mineral Corundum.”

 

What color is sapphire stone?

 

“Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red). Although blue is the best-known sapphire color, they occur in other colors, including gray and black, and they can be colorless. A pinkish orange variety of sapphire is called padparadscha.”

 

What Color Is Grand Sapphire?

 

“Sapphire is a saturated shade of purple, referring to the gem of the same name. Sapphire gems are most commonly found in a range of blue shades although they can be many different colors. Other names for variations of the color sapphire are blue sapphire or sapphire blue, shown below.”

 

What is the color of royalty?

 

“The color purple has been associated with royalty, power and wealth for centuries. In fact, Queen Elizabeth I forbad anyone except close members of the royal family to wear it. Purple's elite status stems from the rarity and cost of the dye originally used to produce it.”

 

What birthstone is purple?

 

“Amethyst, the birthstone of February, is a variety of Quartz that carries a spectacular purple color that ranges from a blend of deep violet and red to a lighter lilac hue.”

 

What is the color of Regal?

 

“Regal Colors, Updated: Purple & Gold in Today's Homes. Purple and gold are a pair with a lot of history. Purple was the exclusive color of royalty, and gold detailing and accessories were a true display of wealth.”

 

How much is amethyst worth?

 

“Not true. With amethyst, value is all about color. I''ve seen ten carat amethysts sell for $10 for the whole stone, and I''ve seen 2 carat amethysts sell for $50/ct. In these cases, the pricing was due to the color.”

 

What's a birthstone?

 

“BIRTHSTONES. Traditionally, a birthstone is associated with each month of the year. For example, the birthstone for January is a garnet, while lucky babies born in April get a diamond as their birthstone.”

 

How much is garnet worth?

 

“Found mainly in small sizes, tsavorites over 2 carats are very rare. Prices range from $500 a carat for good colors with some inclusions, to $1,000 to $2,000 for clean larger stones with top color. Demantoid garnet is the rarest and most valuable of the garnets and is one of the rarest of all colored gemstones.”

 

Is an amethyst valuable?

 

“Amethyst is the purple variety of the mineral Quartz, and is its most famous and valuable gem variety. Quartz also contains other gemstones such as Citrine, Rose Quartz, and Smoky Quartz. ... Amethyst from Russia, colloquially known as "Siberian Amethyst", is very deeply colored with reddish and bluish tints.”

 

How much is a 3 carat ruby worth?

 

“Ed., list a wide range of wholesale prices for faceted gem rubies. Prices are dependent on origin, color, size, and clarity: from a low of $100 to $15,000/ct. Myanmar or Burmese stones in ½ to 1 carat sizes with slightly purplish red color and light inclusions range from $300 to $3,000/ct., for example.”

 

How much is a star garnet worth?

 

“Quality star garnets can be worth $100 or more per carat, but even garnet chips have been made into attractive jewelry. The adventure is more valuable than the garnet itself, Darby says. “You're not going to get rich out there.”

 

How do you tell if a ruby is real?

 

“Real rubies glow with a deep, vivid, almost "stoplight" red. Fake gems are often dull: they are "light, but not bright." If the gem is more of a dark red, then it may be garnet instead of a ruby. If it is a real ruby, however, know that darker stones are usually worth more than lighter stones.”

 

What is the best color for blue sapphire?

 

“Less valuable blue sapphires might be grayish, too light, or too dark. The major fancy sapphire color categories are padparadscha, pink and purple, orange and yellow, green, and colorless and black. Each category has its own color range, causes of color, and market.”

 

What color Ruby is most valuable?

 

“Color is the most significant factor affecting a ruby's value. The finest ruby has a pure, vibrant red to slightly purplish red color. As the color becomes too orangy or more purplish, the ruby moves down the quality scale. The highest-quality rubies have vivid color saturation.”

 

What is the most expensive birthstone?

 

“Which birthstones are the most valuable? Typically, diamond, emerald, ruby and sapphire command the highest prices. However, the question of value has no simple answer. A gem's value depends on four qualities, commonly known as the Four Cs.”

 

 

Is Amethyst a precious stone?

 

“Any gemstones that is not a diamond, ruby, emerald or sapphire is a semi-precious gemstone. ... This guide will reveal details about some of the most popular semi-precious gemstones - garnet, peridot, amethyst, citrine, blue topaz and turquoise.”