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25.71 carat Blue Topaz, Cushion loose Topaz from Brazil, Natural Gem, 19.1 x 14.8 mm, Photo A
Topaz Product Video (615312)

25.71 carat Blue Topaz, Cushion loose Topaz from Brazil, Natural Gem, 19.1 x 14.8 mm

Topaz

25.71ct1 pc
$ 197.97
19.1 x 14.8 mm
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1.47 ct Blue Star Sapphire, 7 x 5.2 mm Oval Cut From Thailand, Photo A

1.47 ct Blue Star Sapphire, 7 x 5.2 mm Oval Cut From Thailand

Star Sapphire

1.47ct1 pc
$ 33.81
7 x 5.2 mm
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23.03 ct Cushion Fossil Coral, 18.5 x 10.9 mm From Indonesia, Photo A

23.03 ct Cushion Fossil Coral, 18.5 x 10.9 mm From Indonesia

Fossil Coral

23.03ct total2 pcs
$ 29.90
18.5 x 10.9 mm
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11.06 ct Round Cut Color-Change Fluorite, 14 mm From Brazil, Photo A

11.06 ct Round Cut Color-Change Fluorite, 14 mm From Brazil

Color-Change Fluorite

11.06ct1 pc
$ 304.15
14 mm
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1.64 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.2 mm, Photo A

1.64 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.2 mm

Topaz

1.64ct total2 pcs
$ 11.64
7.1 x 5.2 mm
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10.49 ct Purple Kunzite, 15.7 x 8.7 mm Cushion Cut From Afghanistan, Photo A
Kunzite Product Video (482028)

10.49 ct Purple Kunzite, 15.7 x 8.7 mm Cushion Cut From Afghanistan

Kunzite

10.49ct1 pc
$ 219.24
15.7 x 8.7 mm
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17.18 ct Yellow Quartz, 18.4 x 17.8 mm Carved From Brazil, Photo A

17.18 ct Yellow Quartz, 18.4 x 17.8 mm Carved From Brazil

Quartz

17.18ct1 pc
$ 94.49
18.4 x 17.8 mm
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11.24 ct Carved Rose Quartz, 17.4 x 17.4 mm From Brazil, Photo A

11.24 ct Carved Rose Quartz, 17.4 x 17.4 mm From Brazil

Rose Quartz

11.24ct1 pc
$ 24.73
17.4 x 17.4 mm
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5.13 ct Round Concave Cut Mystic Quartz, 12.1 mm From Brazil, Photo A

5.13 ct Round Concave Cut Mystic Quartz, 12.1 mm From Brazil

Mystic Quartz

5.13ct1 pc
$ 15.39
12.1 mm
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2.91 carat Orange Hessonite Garnet, Square loose Hessonite Garnet from Sri Lanka, Natural Untreated Gems, 6 x 5.9 mm, Photo A

2.91 carat Orange Hessonite Garnet, Square loose Hessonite Garnet from Sri Lanka, Natural Untreated Gems, 6 x 5.9 mm

Hessonite Garnet

2.91ct total2 pcs
$ 64.02
6 x 5.9 mm
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10.34 carat Swiss Blue Topaz, Carved Fruit loose Topaz from Brazil, Natural Gem, 16.2 x 9.7 mm, Photo A

10.34 carat Swiss Blue Topaz, Carved Fruit loose Topaz from Brazil, Natural Gem, 16.2 x 9.7 mm

Topaz

10.34ct1 pc
$ 56.87
16.2 x 9.7 mm
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1.74 ct Blue Kyanite, 8 x 6 mm Oval Cut From Nepal, Photo A

1.74 ct Blue Kyanite, 8 x 6 mm Oval Cut From Nepal

Kyanite

1.74ct1 pc
$ 36.37
8 x 6 mm
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14.6 ct Black Spinel, 11.9 mm Round Rose Cut From Thailand, Photo A

14.6 ct Black Spinel, 11.9 mm Round Rose Cut From Thailand

Spinel

14.60ct total2 pcs
$ 45.61
11.9 mm
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4.92 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 9.6 x 7.8 mm, Photo A

4.92 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 9.6 x 7.8 mm

Citrine

4.92ct total2 pcs
$ 27.06
9.6 x 7.8 mm
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1.88 ct Orange Sunstone, 7.1 x 5.3 mm Oval Cut From Russia, Photo A

1.88 ct Orange Sunstone, 7.1 x 5.3 mm Oval Cut From Russia

Sunstone

1.88ct total2 pcs
$ 14.48
7.1 x 5.3 mm
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15.5 ct Oval Malachite, 18.4 x 13.1 mm From Congo, Photo A

15.5 ct Oval Malachite, 18.4 x 13.1 mm From Congo

Malachite

15.50ct1 pc
$ 17.05
18.4 x 13.1 mm
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10.7 ct Oval Tiger's Eye, 18.2 x 13.3 mm From India, Photo A

10.7 ct Oval Tiger's Eye, 18.2 x 13.3 mm From India

Tiger's Eye

10.70ct1 pc
$ 6.31
18.2 x 13.3 mm
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0.61 ct Loose Pink Sapphire, 2.2 x 2.2 mm Princess Cut From Tanzania, Photo A

0.61 ct Loose Pink Sapphire, 2.2 x 2.2 mm Princess Cut From Tanzania

Sapphire

0.61ct total7 pcs
$ 82.60
2.2 x 2.2 mm
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1.24 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9 x 7.1 mm, Photo A

1.24 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9 x 7.1 mm

Opal

1.24ct1 pc
$ 54.56
9 x 7.1 mm
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0.58 carat Orange Citrine, Marquise Cut loose Citrine from Brazil, Natural Untreated Gem, 8.1 x 4.2 mm, Photo A

0.58 carat Orange Citrine, Marquise Cut loose Citrine from Brazil, Natural Untreated Gem, 8.1 x 4.2 mm

Citrine

0.58ct1 pc
$ 3.48
8.1 x 4.2 mm
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26.46 ct Baguette Jasper, 27.6 x 16.3 mm From Indonesia, Photo A

26.46 ct Baguette Jasper, 27.6 x 16.3 mm From Indonesia

Jasper

26.46ct1 pc
$ 16.30
27.6 x 16.3 mm
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14.87 ct Black Star Sapphire, 13.6 x 11.4 mm Oval Cut From Thailand, Photo A

14.87 ct Black Star Sapphire, 13.6 x 11.4 mm Oval Cut From Thailand

Star Sapphire

14.87ct1 pc
$ 193.31
13.6 x 11.4 mm
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2.71 carat Sky Blue Topaz,  loose Topaz from Brazil, Natural Gems, 9.8 x 5.1 mm, Photo A

2.71 carat Sky Blue Topaz, loose Topaz from Brazil, Natural Gems, 9.8 x 5.1 mm

Topaz

2.71ct total2 pcs
$ 14.91
9.8 x 5.1 mm
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1.8 carat Oval Emerald, loose Certified Emerald from Zambia, Natural Gem, 9 x 7.3 mm, Photo A
Emerald Product Video (682379)

1.8 carat Oval Emerald, loose Certified Emerald from Zambia, Natural Gem, 9 x 7.3 mm

Emerald

1.80ct1 pc
$ 4,211.80
9 x 7.3 mm
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2.24 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 8.1 x 6.1 mm, Photo A
Ruby Product Video (689624)

2.24 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 8.1 x 6.1 mm

Ruby

2.24ct1 pc
$ 123.20
8.1 x 6.1 mm
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5.76 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 15 x 10.8 mm, Photo A

5.76 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 15 x 10.8 mm

Citrine

5.76ct1 pc
$ 40.32
15 x 10.8 mm
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13.19 ct Round Cut Color-Change Fluorite, 15 mm From Brazil, Photo A

13.19 ct Round Cut Color-Change Fluorite, 15 mm From Brazil

Color-Change Fluorite

13.19ct1 pc
$ 362.73
15 mm
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5.21 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 7 x 7 mm, Photo A

5.21 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 7 x 7 mm

Citrine

5.21ct total5 pcs
$ 34.39
7 x 7 mm
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2.17 carat Emerald Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.9 x 3.9 mm, Photo A

2.17 carat Emerald Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.9 x 3.9 mm

Pyrope Garnet

2.17ct total4 pcs
$ 15.19
5.9 x 3.9 mm
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0.14 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.5 mm, Photo A

0.14 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.5 mm

Ruby

0.14ct1 pc
$ 46.36
3.5 mm
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4.38 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12 x 10 mm, Photo A

4.38 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12 x 10 mm

Citrine

4.38ct1 pc
$ 33.73
12 x 10 mm
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1.12 ct Oval Sillimanite Cat's Eye, 7.4 x 4.4 mm From Madagascar, Photo A

1.12 ct Oval Sillimanite Cat's Eye, 7.4 x 4.4 mm From Madagascar

Sillimanite Cat's Eye

1.12ct1 pc
$ 4.31
7.4 x 4.4 mm
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Photos are of Actual Products for Sale

Buy Calcite Gemstones

Calcite is a carbonate mineral and is the most stable form of calcium carbonate. With a hardness of only 3 on the Mohs scale, it can only be used in jewelry that won't be subject to knocks or scratches, such as earrings and pendants. Its hardness is similar to that of gems like amber, coral and chrysocolla. Though calcite is not an especially durable material, it does take an excellent polish. Many historical artifacts identified as alabaster are in fact made from calcite.

In what colors are Calcite Gemstones available?

Pure calcium carbonate is colorless, but calcite is often colored by various impurities, including iron, magnesium, manganese, zinc or cobalt. Thus you will find calcite in a range of colors including white, gray, yellow, green, red and blue.

Want to learn more about Calcite?

Read our full Calcite information page here.

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