11 Terms
Contributors in Gemstones
Gemstones
Girdle
Fashion; General jewelry
He widest point in circumference of a gem. This is the point where a gem is usually held by fingers or tweezers for examination.
Cubic zirconia
Fashion; General jewelry
A lab created diamond simulant, often abbreviated as CZ. While CZ is a transparent stone, trace elements can be added to the manufacturing process, producing a wide range of colors. On Mohs scale of ...
Culet
Fashion; General jewelry
He lowest part of a gemstone. This looks the tip or point of the stone.
Demantoid
Fashion; General jewelry
Emantoid is a rare and valuable andradite garnet. It exhibits a range of greens from dull to bright emerald green and on rare occasions displays yellow. On Mohs scale of hardness, demantoid is ...
Density
Fashion; General jewelry
The ratio of a gemstone when compared to the weight of an equal volume of water. This means how heavy a gemstone is compared to the same volume of water. Also known as "specific gravity" for solids.
Colour change
Fashion; General jewelry
Colour change gems change colour due to changing light conditions (such as alexandrite or colour change sapphire) or when viewed from different angles (such as andalusite or iolite).
Concave cut
Fashion; General jewelry
Traditional gem facets are flat or two-dimensional. Concave cutting creates facets that are curved or three-dimensional. These curved facets refract more of the ambient light and return it to the eye ...
