Natural zircon (not to be confused with cubic zirconia) has been used to create convincing diamond imitations. However, this gem is doubly refractive and has a high birefringence. Diamonds have no birefringence. 2.35-ct radiant step emerald-cut zircon. © Dan Stairs Custom Gemstones. Used with permission.
Brown Birefringence Zircon Faceted Asscher Cut
Natural zircon (not to be confused with cubic zirconia) has been used to create convincing diamond imitations. However, this gem is doubly refractive and has a high birefringence. Diamonds have no birefringence. 2.35-ct radiant step emerald-cut zircon. © Dan Stairs Custom Gemstones. Used with permission.
Article: What is Gemstone Birefringence?
Credit: Dan Stairs Custom Gemstones
| Gemstone | Zircon |
| Natural or man made | Natural |
| Gem State | Faceted |
| Color | Brown |
| Transparency | Transparent |
| Photo phenomena | Birefringence |