gemstone
Cubic Zirconia and Synthetic Ruby Jewelry
Cubic Zirconia (ZrO2) and Synthetic Corundum (Al2O3)
Hardness: CZ (8-8.5), Synthetic Ruby (9). Color: Clear (white) and Magenta-Red. Luster: Adamantine. Crystal Structure: Cubic and Trigonal. High dispersion (fire) in clear stones.
- Hardness
- CZ (8-8
- Color
- Clear (white) and Magenta-Red
- Luster
- Adamantine
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Physical properties
Hardness: CZ (8-8.5), Synthetic Ruby (9). Color: Clear (white) and Magenta-Red. Luster: Adamantine. Crystal Structure: Cubic and Trigonal. High dispersion (fire) in clear stones.
Formation & geological history
Commercial synthetic gemstones created in laboratories using methods like the Skull Melting process (for CZ) and Verneuil or Czochralski processes (for rubies).
Uses & applications
High-end costume jewelry, fashion accessories, and simulation of natural diamond/ruby pieces.
Geological facts
Cubic Zirconia is the most popular diamond stimulant due to its low cost and high durability. Synthetic rubies were the first gemstones ever to be synthesized in a lab (late 19th century).
Field identification & locations
Identify by looking for perfect clarity under magnification, lack of natural inclusions, and a slightly higher weight (specific gravity) than natural diamonds for the clear stones. The location reported (Zapopan, Mexico) is a major urban area where such commercial jewelry is commonly traded but not naturally mined in this form.
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