GIA's Gübelin Gem Project: Zircon

Although colorless when chemically pure, zircon is typically yellow-brown to brown. It also comes in red, blue, purple, and green. Because of its high brilliance and dispersion, colorless zircon has sometimes been used as a substitute for diamond in jewelry.

 

33703 5.76 ct Zircon Cambodia (PDF)	33723 6.61 ct Zircon Cambodia (PDF)	33698 11.58 ct Zircon Laos (PDF)
35605 2.01 ct Zircon Madagascar (PDF)	35602 7.36 ct Zircon Madagascar (PDF)	35601 7.66 ct Zircon Madagascar (PDF)
34640 10.40 ct Zircon Myanmar (PDF)	34669 14.37 ct Zircon Myanmar (PDF)	34671 16.32 ct Zircon Myanmar (PDF)
33734 6.21 ct Zircon Sri Lanka (PDF)	33717 7.11 ct Zircon Sri Lanka (PDF)	33705 10.72 ct Zircon Sri Lanka (PDF)
33729 11.77 ct Zircon Sri Lanka (PDF)	34920 12.66 ct Zircon Sri Lanka (PDF)	34958 16.65 ct Zircon Sri Lanka (PDF)
33699 24.24 ct Zircon Sri Lanka (PDF)	33756 8.74 ct Zircon Tanzania (PDF)	34341 12.81 ct Zircon Tanzania (PDF)
35070 21.05 ct Zircon Tanzania (PDF)	35091 4.06 ct Zircon Thailand (PDF)	33719 11.48 ct Zircon Thailand (PDF)
35092 15.13 ct Zircon Thailand (PDF)	33746 19.31 ct Zircon Thailand (PDF)	33694 22.15 ct Zircon Thailand (PDF)
33695 28.15 ct Zircon Thailand (PDF)