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Green Gaspeite

A recent discovery, gaspeite is a very rare nickel carbonate mineral named after the place it was first described; the Gaspé Peninsula in Eastern Canada. The mineral was first described by D.W. Kohls and J.L. Rodda in 1966. Specimens have also been found in New Mexico in the United States and in Western Australia. Gaspeite is typically a pale to bright green color that is often referred to as apple green.

Gaspeite Rough Stone
Gaspeite Rough Stone

Gaspeite is composed of nickel magnesium iron carbonate. Crystals of gaspeite are typically translucent, but the mineral is usually found in opaque massive form. Gaspeite is quite a dense material, with a specific gravity of 3.7, roughly the same as members of the garnet family. It has a hardness rating of 4.5 to 5 on the Mohs scale, similar to apatite. Gaspeite has perfect cleavage in 3 directions. Its luster is dull to vitreous.

Gaspeite Chrysoprase Necklace
Gaspeite Chrysoprase Necklace

Gaspeite was initially discarded as a worthless by-product of nickel sulfide mining, but it has been gaining popularity within the gemstone industry. This is partly due to its rarity and partly due to it resemblance to the rare green turquoise. It is often set in silver alongside gems such as turquoise, chrysoprase, malachite, sugilite and lapis lazuli.

Gaspeite Cabochon
Gaspeite Cabochon

Since gaspeite is a slightly soft gemstone, it is not recommended for rings unless well-protected by a bezel setting. You will most often see gaspeite set in pendants or pins, or in the form of beads.

  • First Published: April-01-2009
  • Last Updated: August-15-2017
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    Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.
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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

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

Note: 1ct = 0.2g

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