| Hint | Answer | % Correct |
|---|---|---|
| An instrument used to measure the dimensions of a stone. | caliper | 71%
|
| A measure of gold purity. | karat | 71%
|
| The reflection of light bouncing back off the surface of a gemstone. | luster / lustre | 71%
|
| A description of a gemstone that has not been cut and polished into its final form. | rough | 71%
|
| Diamond-like. | adamantine | 69%
|
| Any small foreign object or mineral that became trapped inside a gemstone during its formation. | inclusion | 69%
|
| Any of the flat surfaces that create the shape of a finished gemstone. | facet | 67%
|
| 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. | Mohs | 64%
|
| A phenomenon that causes a bright star to display across the surface of a gem. | asterism | 60%
|
| A measure of gemstone weight. | carat | 60%
|
| A phenomenon whereby a beam of light can be seen across the surface of a gemstone. Also known as the ‘cat’s eye’ effect. | chatoyancy | 51%
|
| A gemstone that has been polished into a dome shape. | cabochon | 49%
|
| The widest part of a cut gemstone. | girdle | 44%
|
| A small magnifier used to closely examine gemstones and jewelry. | loupe | 44%
|
| The very tip at the bottom of a cut gemstone. | culet | 42%
|
| The top, flat facet of a cut gemstone. | table | 33%
|
| The bottom part of a faceted gemstone, leading from the girdle to the culet. | pavilion | 20%
|