Round 6.0MM. Matching Pair AAA Diamond Cut Natural Gemstone White Zircon, approximately 1 CT. Great clarity, diamond white in color. Gently heat treated. Would make a beautiful pair of earrings. Natural gemstones mined in Cambodia. White Zircon is highly regarded as a natural replacement for diamond, since it is much lower cost but has impressive fire and brilliance compared to other white and colorless gems.