Cubic Zirconia Jewelry vs. Diamond Jewelry: A Scientific Review
This lab gem supplier gives some interesting facts on cubic zirconia and how they differ from diamonds. Based on looks alone, professionals say that cubic zirconia and diamonds are indistinguishable. CZ gemstone experts use a variety of scientific criteria to verify authenticity. Distinguishing factors between cubic zirconia jewelry and diamond jewelry include density, dispersion and color grading.
- CZ is 1.6 times denser and therefore heavier than diamond with a higher specific gravity, 5.6 to 6.0.
- Harder than most natural gems and nearly as hard as diamond’s 10, cz registers 8 on the Mohs scale.
- With a refractive index of 2.17, cz is nearly as refractive as diamond which has an index of 2.42.
- Both cz and diamond exhibit subadamantine luster.
- CZ has an exceptionally high dispersion, 0.060, compared to diamond at 0.044, producing greater prismatic fire.
- Completely colorless AAAAA cubic zirconia, comparable to a perfect D on the diamond color grading scale, can be created in the lab whereas most diamonds contain yellow or brown flaws.
via Distinguishing Cubic Zirconia from Diamonds | The Lab Gem Supplier.
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