Zircon Value
Red - Fine Color Red: oR 5/4
Blue - Fine Color Blue: vstgB 5/4
Green - Fine Color Green: slyG 5/3
Green - Fine Color Green: slyG 5/3
Yellow to Orange (Sold as "Gold") - Fine Color Yellow to Orange: rO 4/4
Other Colors
Cat’s Eye
Accompanying value information:
The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.
Zircons come in many colors, but blue is perhaps the most popular and expensive. However, almost all blue zircon is heat treated.

These matched blue oval brilliant-cut zircons have been heat treated. 3.62 ctw, 5.8 x 4.2 mm, Cambodia. © The Gem Trader. Used with permission.
Green is the rarest natural color.

Bright green cushion-cut zircon, 5.61 cts. © All That Glitters. Used with permission.
To learn more about zircon quality factors, consult our zircon buying guide.

Zircon: Sri Lanka (19.03, 17.43, 14.20, 9.26 // 4.36, 11.26, 15.70), Cambodia (5.56) // Sri Lanka (8.92, 16.63, 7.77, 5.34). Photo © Joel E. Arem, PhD, FGA. Used with permission.