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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (5): Calcite Clear All
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50.5ct Cushion Cabochon Lime Green Calcite Gem (ID: 469259)
50.49 ct Calcite
30.3 x 17.9 mm
$ 50.49
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43.6ct Cushion Cabochon Lime Green Calcite Gem (ID: 469255)
43.58 ct Calcite
23.1 x 21.6 mm
$ 43.58
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61.3ct Oval Cabochon Yellow Calcite Gem (ID: 469260)
61.33 ct Calcite
27 x 15.8 mm
$ 61.33
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42.6ct Cushion Cabochon Lime Green Calcite Gem (ID: 469258)
42.56 ct Calcite
28.1 x 16 mm
$ 42.56
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92.8ct Cushion Cabochon Lime Green Calcite Gem (ID: 505895)
92.84 ct Calcite
30.9 x 26.1 mm
$ 92.84
Item in Stock
Calcite

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.

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.

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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

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