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                  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

Facet:

One of the flat refined surfaces cut on a gemstone that allows the cut stone to sparkle and reflect light. Diamonds, emeralds, sapphires, and also rubies are normally faceted.

 

 Fire:

Fire in a stone refers to the streaks and even flashes of brilliant color(s) seen when the stone is rotate or enthused in a natural or artificial light source. Opals are noted for their fire.

 

Freeform:

A stone engrave in an unusual or non-calibrated shape.

 

Feldspar:

Feldspar is derivative from the German Fled, field, and Spat, a rock that do not contain ore. Feldspathic refers to materials which contain feldspar.