Although colourless 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, colourless zircon has sometimes been used as a substitute for diamond in jewellery.
Read MoreMany people have heard of zircon but never seen it. This is mostly because of colourless zircon’s wide use as a diamond simulant in the early 1900s.
Read MoreThis section, from the Winter 2011 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Summer 1989 issue of Gems & Gemmology, is a compilation of interesting finds from GIA's laboratories.
Read MoreThis section, from the Winter 1983 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
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This section, from the Summer 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Spring 2003 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Summer 1997 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Winter 1995 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Autumn 1992 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.
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