Zircon Gemstones
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Hardness
7.5 on the Mohs scale.
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Occurrence
Sri Lanka (Ceylon), Thailand, Myanmar (Burma), Cambodia, Vietnam, Kampuchea, Australia, Brazil, Nigeria, Tanzania and France. Zircon and turquoise are the birthstones of the month of December.
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Appearance
Zircon, a naturally occurring gemstone, has colorless, yellow, orange, red, blue, brown and green varieties. Zircon, by it's name, is sometimes confused with cubic zirconia ("CZ"), which is synthetic. In addition, both have been used as diamond substitutes. Zircon has a high refractive index which is responsible for it's diamond like appearance. Zircon can be distinguished from diamond by it's double refraction and by wear and tear of it's edges, as compared to diamond which is very much harder.
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Enhancements
Green and brown colors of zircon are not enhanced. Yellow zircon is rarely heat treated to improve color. Blue, red and colorless are always heat treated brownish crystals to produce these colors.
More information on gemstone enhancements.
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0.12 ct., 'AA' Grade |
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| 2.5mm Round Cut |
| Light |
| Vivid Slightly Bluish Green |
| Loupe Clean |
| [H] Heated to improve color. |
| One of a kind. |
| Blue Zircon |
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8.49 ct. total |
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| 9.7x7.7mm Oval Cut |
| Medium |
| Vivid Very Strongly Greenish Blue |
| Loupe Clean |
| [H] Heated to improve color. |
| Only one pair available. |
| Zircon |
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0.83 ct. |
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| 5.5x4.3mm Oval Cut |
| Light |
| Vivid Slightly Bluish Green |
| Very Slightly Included |
| [H] Heated to improve color. |
| One of a kind. |
| Blue Zircon |
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0.87 ct. |
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| 5.8x4.4mm Oval Cut |
| Light |
| Vivid Slightly Bluish Green |
| Very Slightly Included |
| [H] Heated to improve color. |
| One of a kind. |
| Blue Zircon |
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0.74 ct. |
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| 5.6x4.3mm Oval Cut |
| Light |
| Vivid Slightly Bluish Green |
| Very Very Slightly Included |
| [H] Heated to improve color. |
| One of a kind. |
| Blue Zircon |
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0.97 ct. |
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| 6.2x4.4mm Oval Cut |
| Light |
| Vivid Slightly Bluish Green |
| Very Very Slightly Included |
| [H] Heated to improve color. |
| One of a kind. |
| Blue Zircon |
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Calibrated Zircon
Calibrated Zircon
Specify size, shape and quality when ordering. Prices are subject to change without notice. Actual carat weight may vary from the average carat weight listed.
- AA Blue Zircon, Clean, medium dark, slightly greenish-blue, good cut.
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| Zircon |
Quality |
AA |
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| Shape |
Size |
Avg. Weight |
Price Each |
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1.5mm
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0.03 ct.
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1.75mm
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0.04 ct.
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2mm
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0.06 ct.
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2.25mm
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0.09 ct.
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2.5mm
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0.12 ct.
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2.75mm
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0.14 ct.
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3mm
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0.17 ct.
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3.5mm
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0.27 ct.
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3.75mm
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0.30 ct.
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4mm
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0.40 ct.
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4.5mm
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0.53 ct.
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5mm
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0.72 ct.
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5.5mm
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0.95 ct.
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6mm
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1.20 ct.
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AA |
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5x3mm
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0.37 ct.
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6x4mm
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0.75 ct.
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7x5mm
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1.28 ct.
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8x6mm
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2.00 ct.
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9x7mm
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3.00 ct.
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AA |
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5x3mm
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0.32 ct.
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6x4mm
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0.65 ct.
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7x5mm
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1.05 ct.
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AA |
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4x2mm
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0.13 ct.
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5x2.5mm
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0.24 ct.
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6x3mm
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0.37 ct.
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7x3.5mm
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0.57 ct.
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8x4mm
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0.85 ct.
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AA |
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5x3mm
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0.45 ct.
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6x4mm
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0.90 ct.
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