The name of a scale used to measure the hardness of a gemstone or mineral and its resistance to being scratched when exposed to other substances.
A phenomenon that causes a bright star to display across the surface of a gem.
A description of a gemstone that has not been cut and polished into its final form.
A measure of gold purity.
The reflection of light bouncing back off the surface of a gemstone.
The widest part of a cut gemstone.
The bottom part of a faceted gemstone, leading from the girdle to the culet.
A small magnifier used to closely examine gemstones and jewelry.
The top, flat facet of a cut gemstone.
A measure of gemstone weight.
The very tip at the bottom of a cut gemstone.
A gemstone that has been polished into a dome shape.
Any small foreign object or mineral that became trapped inside a gemstone during its formation.
An instrument used to measure the dimensions of a stone.
Any of the flat surfaces that create the shape of a finished gemstone.
A phenomenon whereby a beam of light can be seen across the surface of a gemstone. Also known as the ‘cat’s eye’ effect.
adamantine
asterism
cabochon
caliper
carat
chatoyancy
culet
facet
girdle
inclusion
karat
loupe
luster / lustre
Mohs
pavilion
rough
table
Correct!
Incorrect
You left this blank