| | Cubic zirconia -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-22) |
 | | Cubic zirconia is, as its name would imply, (Click link for more info and facts about crystallographically) crystallographically (A line connecting isometric points) isometric, and as diamond is also isometric, this is an important attribute of a would-be diamond simulant. |
| | Cubic zirconia is relatively hard, at about 8.5 on the (A scale of hardness of solids; talc is 0 and diamond is 10; ordering is determined by which substance can scratch another substance) Mohs scale - nowhere near diamond, but much harder than most natural gems. |
| | Its (The ratio of the velocity of light in a vacuum to that in a medium) refractive index is high at 2.15 - 2.18 (B-G interval) and its (A surface coating for ceramics or porcelain) luster is subadamantine. |
| www.absoluteastronomy.com /encyclopedia/c/cu/cubic_zirconia.htm (1999 words) |
