| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | gemstone evaluation | gemology enthusiasts | Evaluated based on scientific principles such as color, clarity, cut, and carat weight | 1 |
| 2 | precious gemstones | gemology enthusiasts | Have in-depth knowledge about the composition, clarity, and cut of gemstones | 1 |
| 3 | synthetic gemstones | gemology enthusiasts | Appreciated for their scientific and technical production processes, often used in research and experimentation | 1 |