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GIA GEM ID LAB Class
| Question | Answer |
|---|---|
| General Observation | |
| General Observation includes steps: | |
| Tools used for General observation | Use your eyes first before magnificaiton. Cool and incandescent lighting sources. |
| First step of General Observation? | Color |
| General Observation: Color | 1. Tone 2. Hue 3. Saturation |
| General Observation:Look for Color Change | |
| General Observation:Checking for Transparency | |
| General Observation:Cut | |
| Types of Cut | • Faceted • Single Cab • Double Cab • Buff-Top • S-Cab • Sphere • Tablet • Cameo • Intaglio • Bead • Rough • Tumbled • Carving |
| Faceted | |
| Single Cab | |
| Double Cab | |
| Buff-Top | |
| S-Cab | |
| Sphere | |
| Tablet | |
| Cameo | |
| Intaglio | |
| Bead | |
| Rough | |
| Tumbled | |
| Carving | |
| General Observation: Phenomena | |
| Types of Phenomena | |
| Asterism | |
| Adularescence | |
| Mineral | Mineral—A natural, inorganic substance with a characteristic chemical composition and, usually |
| Chemical Composition | —Kinds and relative quantities of atoms that make up a material. |
| Crystal Structure |