Difference between revisions of "Cubic zirconia"
| Line 8: | Line 8: | ||
CZ; cubic zirconium; Matura diamond; imitation diamond; Pink Ice; Fianit (Russian); circonita (Esp.); zircão cúbico (Port.) | CZ; cubic zirconium; Matura diamond; imitation diamond; Pink Ice; Fianit (Russian); circonita (Esp.); zircão cúbico (Port.) | ||
| − | == | + | ==Physical and Chemical Properties== |
| − | Cubic zirconia has a low thermal conductivity while diamonds have a high thermal conductivity | + | * Cubic zirconia has a low thermal conductivity while diamonds have a high thermal conductivity |
| − | + | * Luster = adamantine | |
| − | Luster = adamantine Dispersion = 0.058-0.066 (diamond = 0.044) Cleavage = none Fracture = conchoidal | + | * Dispersion = 0.058-0.066 (diamond = 0.044) |
| − | + | * Cleavage = none Fracture = conchoidal | |
| − | Fluorescence = yellowish under short-wave UV | + | * Fluorescence = yellowish under short-wave UV |
{| class="wikitable" | {| class="wikitable" | ||
| Line 22: | Line 22: | ||
|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 2750 | + | | 2750 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 5.6-6.0 | + | | 5.6-6.0 g/ml |
|- | |- | ||
! scope="row"| Refractive Index | ! scope="row"| Refractive Index | ||
| Line 35: | Line 35: | ||
[[media:download_file_446.pdf|Properties of Natural and Simulated Diamonds]] | [[media:download_file_446.pdf|Properties of Natural and Simulated Diamonds]] | ||
| − | == | + | ==Resources and Citations=== |
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 | ||
| Line 43: | Line 43: | ||
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | * ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | ||
| − | * Wikipedia | + | * Wikipedia: http://en.wikipedia.org/wiki/Cubic_zirconia (Accessed Sept. 20, 2005) |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 10:25, 14 July 2022
Description
A crystal clear, synthetic Diamond Gemstone. Cubic zirconia (CZ) are very hard and have a high refractive index. It is composed of a single crystal of synthetically prepared Zirconium oxide. During manufacture, calcium or yttrium are added as a metal oxide stabilizer, which allows the growth of the single crystal. The technique was first researched in France in the 1960s, then perfected in Russia in 1973 at the Lebedev Physical Institute. Commercial imitation diamonds have been on the market since 1976. Some coatings have been applied in recent years that make the stone visually indistinguishable from diamonds. The variations between the two stones are: 1) CZ are flawless, unlike natural diamonds, and 2) CZ has a lower thermal conductivity, higher dispersion, higher specific gravity, and often a poorer faceted cut.
Synonyms and Related Terms
CZ; cubic zirconium; Matura diamond; imitation diamond; Pink Ice; Fianit (Russian); circonita (Esp.); zircão cúbico (Port.)
Physical and Chemical Properties
- Cubic zirconia has a low thermal conductivity while diamonds have a high thermal conductivity
- Luster = adamantine
- Dispersion = 0.058-0.066 (diamond = 0.044)
- Cleavage = none Fracture = conchoidal
- Fluorescence = yellowish under short-wave UV
| Mohs Hardness | 8.5 |
|---|---|
| Melting Point | 2750 C |
| Density | 5.6-6.0 g/ml |
| Refractive Index | 2.15-2.18 |
Comparisons
Properties of Natural and Simulated Diamonds
Resources and Citations=
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
- Wikipedia: http://en.wikipedia.org/wiki/Cubic_zirconia (Accessed Sept. 20, 2005)