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Diamond Terms G

~ Diamond Terminology from A to Z ~

There are thousands of terms being used in today's jewelry industry. Some common knowledge, others are obscure and baffling. We've created a database of terminology from A to Z to make it easy, and of course if you still have questions, please do not hesitate to send us an email or give us a call.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

GIA

Gemological Institute of America. Think of GIA as the Supreme leader in diamond grading. The value of diamond will actually increase with an appraisal from GIA. No matter what the diamond is. It's not because the 4 C's of the diamond have changed it's just that once GIA has certified it, their word is considered the law. There are other Grading Institutes as well. Such as EGL, and many private graders. However if you go to a private diamond grader it is well advised to use a diamond grader that graduated from GIA.

Gem, Gemstone

A stone that once it's cut, polished, and ready to be mounted can be used as a jewel. Often referred to as a semiprecious or precious stone.

Genuine

A term used to describe what a gem or diamond ACTUALLY is.

Gilding

A thin layer of gold used for decorating. A process that can be used on almost all jewelry.

Girdle

The middle part of a diamond. More specifically, the portion of the diamond that separates the pavilion from the crown. Take a look at our diamond cuts page to see this in detail.

Gold

Gold is a yellow precious metal with the atomic number of 79. Used primarily for jewelry and decoration, and to guarantee the value of currency. Gold is very widely distributed throughout nature. In jewelry you'll find 10k, 14k, 18k, and 24k gold. Each of these variations reflect the total amount of gold that is combined with other metals, where 24k gold is pure gold and often not used to create jewelry as it's extremely easy to dent without the aid of other metals in the mixture.

Gold Electroplating

The process by which electrolytic deposition is done. Another words the process in which gold usually of 10k or more be fitted around any object.

Grain

The smallest area of crystal concentrated in a structure. Usually referred to as a pinpoint.

Grams

The weight in which most precious metals are weighed. Example: A one carat loose diamond is .2 grams. A 5 carat diamond is 1 gram.

Granite

A very hard, granular, crystalline, igneous rock consisting mainly of quartz, mica, and feldspar and often used as a building stone.

Granulation

The process of taking a precious or semi-precious metal down to grains or particles, then using those grains to sand a piece of jewelry.

Green Diamonds

A very rare color of Diamond. Actually referred to as a Fancy Colored Diamond. The more bright and vivid the green the more valuable