“Laserblue” synthetic glass: 16.04 cts. Photo © Joel E. Arem, PhD, FGA. Used with permission.
“Laserblue” synthetic glass: 16.04 cts. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Data | Value |
---|---|
Name | Laserblue |
Is a Variety of | Glass |
Stone Sizes | To very large |
Heat Sensitivity | Yes |
Special Care Instructions | This is a rare glass. It is brittle, hard to cut and easy to chip. |
Identifying Characteristics | Always a pure blue with medium to deep tone. Typical glass inclusions, bubbles and swirl marks. Extraordinary hardness for glass at 6.5 |
Formula | borosilicate + Cu |
Colors | Blue |
Fracture | Conchoidal |
Hardness | 6.5 |
Cleavage | None |
Wearability | Poor |
Crystallography | Amorphous. |
Refractive Index | 1.520 |
Birefringence | None |
Dispersion | Low. |
Luminescence | Intense, strong blue in UV long and short. |
Luminescence Present | Yes |
Luminescence Type | Fluorescent, UV-Long, UV-Short |
UV Long | Intense blue |
UV Short | Strong blue |
Absorption Spectrum | Strong line 630 nm general absorption 540 550 nm. |
Pleochroism | None. |
Optics | Isotropic. |
Luster | Vitreous. |
Polish Luster | Vitreous. |
Fracture Luster | Vitreous. |
Specific Gravity | 2.30-4.50 (glass) |
Enhancements | None. |
Transparency | Transparent. |
Phenomena | None. |