Detail identification and grading report
| Identification |
| Type: |
Natural |
| Species: |
Chrysoberyl |
| Variety: |
Alexandrite |
| Origin: |
Tunduru, Ruvuma, Ruvuma Region, Tanzania |
| Hardness: |
8.5 |
| Density: |
3.75 |
| RI-1: |
1.741 |
| RI-2: |
1.76 |
| Enhancements |
| Variety of work: |
Faceted |
| Designation: |
A (Not currently known to be enhanced) |
| Color |
| Color light source: |
Cool daylight |
| Color description: |
yG*5/2 (medium yellowish green) |
| Phenomena: |
Change of color (Alexandrite effect) Pleochroism Strong |
| Color phenomena: |
yO*2/2 (very light yellowish orange [brownish]) |
| Clarity |
| Clarity type: |
Eye clean (Type I) |
| Transparency: |
Transparent |
| Cut |
| Shape: |
Oval |
| Cut style: |
Step |
| Symmetry: |
Exceptional |
| Brilliance: |
Exceptional |
| Polish: |
Exceptional |
| Size |
| Width: |
6.40 mm |
| Length: |
7.11 mm |
| Depth: |
4.56 mm |
| Weight: |
1.70 cts |
