5 Carat Alexandrite Marquise (17.32×8.66mm, Bluish Green)
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64 mm
| Your settings | |
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Ring |
Gold |
Skin tone |
Light |
Ring diameter |
16.9 mm |
Ring width |
3.0 mm |
Finger length |
64 mm |
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Ring diameter:
16.9 mm
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Additional Info
Named after Czar Alexander II (1818–1881) Alexandrite is a rare and valuable color-change variety of chrysoberyl. Alexandrite possesses a surprising ability to change color - from green or bluish-green in daylight, it transforms to purplish or raspberry red in incandescent light.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Gem Details
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Name:
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Alexandrite |
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Mineral Class:
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Chrysoberyl |
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Shape:
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Marquise |
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Chemical Formula:
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BeAl2O4 |
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Crystal Structure:
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Orthorhombic |
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Hardness:
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8.5 |
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Specific Gravity
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3.7 |
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Carat weight:
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5 ct |
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Gram weight:
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1 g (0.0353 ounces) |
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Points:
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500 pts |
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Length:
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17.32 mm |
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Width:
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8.66 mm |
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Est. face-up size:
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106.49 mm² |
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Volume:
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270.27 mm³ |
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Length-to-width ratio:
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2 |
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Refractive Index:
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1.744 - 1.755 |
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Cleavage:
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1,1 ; 3,2 |
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Luster:
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Vitreous |
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Birefringence:
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0.009 |
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Wearability:
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Durable gem for daily wear |
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Care Instructions:
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No special or unusual care |
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Color:
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Birthstone:
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Alexandrite is a birthstone for the month of June |
Popular comparisons:
- 5ct Alexandrite (Marquise, Bluish Green, 17.32 x 8.66) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 5ct Alexandrite (Marquise, Bluish Green, 17.32 x 8.66) vs. 6ct Diamond (Emerald, White, 12.14 x 8.99)
- 1ct Alexandrite (Marquise, Bluish Green, 10 x 5) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Alexandrite (Marquise, Bluish Green, 10.12 x 5.06) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 7ct Alexandrite (Marquise, Bluish Green, 19.38 x 9.69) vs. 2ct Alexandrite (Marquise, Bluish Green, 12.76 x 6.38)
- 1.5ct Alexandrite (Marquise, Bluish Green, 11.6 x 5.8) vs. 2ct Alexandrite (Marquise, Bluish Green, 12.76 x 6.38)
- 1ct Alexandrite (Marquise, Bluish Green, 10 x 5) vs. 1ct Alexandrite (Oval, Bluish Green, 8 x 6)
- 1ct Alexandrite (Marquise, Dark Bluish Green, 9.3 x 4.6) vs. 1ct Diamond (Marquise, White, 10.38 x 5.19)
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