17 Carat Alexandrite (Trillion, 19.24×19.24mm, Bluish Green)
Color:
Actual size is set for screen
How big is a 17 carat trillion-cut Alexandrite?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 17ct trillion-cut Alexandrite would be around 19.24×19.24 mm (±6%). Check how big it looks on a ring and finger.
Ring:
Skin tone:
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Ring width:
3.0 mm
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Saved...
64 mm
| Your settings | |
|---|---|
Ring |
Gold |
Skin tone |
Light |
Ring diameter |
16.9 mm |
Ring width |
3.0 mm |
Finger length |
64 mm |
Finger coverage |
114 % |
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Saved...
|
|
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Ring diameter:
16.9 mm
|
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 Group:
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Chrysoberyl |
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Shape:
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Trillion |
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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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3.73 |
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Carat weight:
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17 ct |
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Gram weight:
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3.4 g (0.1199 ounces) |
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Points:
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1700 pts |
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Length:
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19.24 mm |
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Width:
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19.24 mm |
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Est. face-up size:
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229.51 mm² |
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Volume:
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911.53 mm³ |
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Length-to-width ratio:
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1 |
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Refractive Index:
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1.744 - 1.755 |
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Luster:
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Vitreous |
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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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Alexandrite can be found in the following colors:
                  
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Birthstone:
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Alexandrite is a birthstone for the month of June |
Popular comparisons:
- 0.75ct Alexandrite (Trillion, Bluish Green, 6.55 x 6.55) vs. 0.87ct Diamond (Round, White, 6.21 x 6.21)
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.8ct Alexandrite (Trillion, Dark Purple, 8.77 x 8.77) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 40ct Alexandrite (Trillion, Bluish Green, 24.67 x 24.67) vs. 40ct Emerald (Pear, Green, 32.39 x 19.51)
- 5.5ct Alexandrite (Trillion, Bluish Green, 12.73 x 12.73) vs. 8.5ct Alexandrite (Oval, Bluish Green, 15.84 x 10.56)
- 1ct Alexandrite (Trillion, Bluish Green, 7.21 x 7.21) vs. 1ct Diamond (Trillion, White, 7.74 x 7.74)
- 1ct Alexandrite (Trillion, Bluish Green, 8 x 8) vs. 1ct Alexandrite (Pear, Bluish Green, 9 x 6)
- 1ct Alexandrite (Trillion, Green, 6.4 x 6.5) vs. 1.75ct Emerald (Emerald, Green, 8.78 x 6.5)