Jewelry ~ Gemstone

Terms and Definitions

  Bernardine Designer Art Jewelry


Jewelry and Gemstone Glossary of Terms

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Index of Terms

- K-


Karat (abbreviated Kt or K) is the measure of the fineness of gold equal to 1/24 part. Pure gold is 24 karat gold, 18K gold is 18/24 gold, 14K gold is 14/24 gold, 12K gold is 12/12 (exactly half gold). Note that the term carat is used as measure of weight for gemstones.


Keum Boo

A jewelry-making technique from Korea where 24k gold foil is fused to sterling silver.


Koroit Opal

Koroit opalKoroit picture opalOpals from the Koroit mines in Australia. These are the hardest of the boulder opal types and often referred to as "Koroit picture opals" because of the patterns.


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