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Faceted Zircon
Zircons reputation has suffered of late due to the introduction of a diamond simulant. So for the record,
zircon (zirconium silicate, ZrSiO4) is NOT the same material as the artificial gem material Cubic Zirconia (zirconium
oxide, ZrO2). However with that in mind, zircon has been used as a diamond simulant both for innocent and nefarious reasons.
Zircon resembles diamond in luster and fire and colorless zircons have been mistaken for diamonds by experienced jewelers.
Zircon can make a very attractive and affordable gemstone. It is found in browns and greens but can be heat treated to beautiful
blue and golden colors. Colorless material is produced in this way as well. Zircon is the December birthstone. As a mineral
specimen, zircon is uncommon in most rock shops because attractive specimens are rare. However, fine specimens of well shaped
zircons are available and are in demand. The typical simple crystal of zircon is a tetragonal prism terminated with four sided
pyramids at each end. The prism may be lacking and the crystal can look octahedral. More complex crystals have faces of a
less steeply inclined prism that taper the terminations. Also a secondary prism may truncate the primary prism by cutting
off its edges and producing an octagonal cross-section through the crystal. There is even an eight sided pyramid (actually
a ditetragonal dipyramid) that may modify the four sided pyramids
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Lot of two exceptionally beautiful sea-blue 4x6 ovals weighing a total of 1.54 cts.
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Fantastic lot of three stupendous 4x5 oval sea blue zircons weighing a total of 1.72 cts. Great lot of beautiful
gemstones!
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Beautifully colored small blue 4x6 oval weighing .67 ct.
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Lot of two beautifully colored stones. This type of zircon is often refered to as jacinth. I'd like
to call this a pair, but one stone has a much redder tint to it than the other. Both are 4x6 ovals with a total weight
of .98 ct.
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Glistening white zircon oval 6.5x8.5 with a total weight of 2.7 cts!
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