GemsLabé
Gemstone Identification Report
Report №
111-2026
Conclusion
Beryl var. Emerald
Fracture filled · origin Brazil
01Identification
- Species
- Beryl var. Emerald
- Origin
- Brazil
- Treatment
- Fracture filled
02Measurements
- Shape & cut
- Cabochon
- Weight
- 1.150 ct
- Dimensions
- 7.3 × 5.6 × 3.7 mm
03Optical & physical tests
- Refractive index
- 1.57
- Double refraction
- not measurable from cabochon
- Specific gravity
- 2.76
- Polariscope
- Doubly refractive
- Pleochroism
- Moderate slightly bluish green to yellowish green
- Fluorescence LW 365 nm
- Weak yellow in fractures
- Fluorescence SW 254 nm
- Inert
- Chelsea filter
- Inert
Microscope
Included. Natural emerald various inclusions: graphite, calcite, 2-phase inclusions