0.25 Carat Diaspore (Emerald, 4.25×3.15mm, Light Yellowish Green)
Color:
Actual size is set for screen
How big is a 0.25 carat emerald-cut Diaspore?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 0.25ct emerald-cut Diaspore would be around 4.25×3.15 mm (±6%). The lw ratio of this Diaspore is 1.35. See below 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 |
19 % |
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Saved...
|
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Ring diameter:
16.9 mm
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Additional Info
Diaspore is quite rare color-changing gemstone mined only in the remote location in Turkey's Anatolian Mountains. It appears yellowish-green to light green in daylight, changing to pinkish hues in incandescent lighting.
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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Diaspore |
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Shape:
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Emerald |
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Chemical Formula:
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AlO(OH) |
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Crystal Structure:
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Orthorhombic |
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Hardness:
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6.5 - 7 |
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Specific Gravity
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3.4 |
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Carat weight:
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0.25 ct |
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Gram weight:
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0.05 g (0.0018 ounces) |
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Points:
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25 pts |
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Length:
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4.25 mm |
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Width:
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3.15 mm |
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Est. face-up size:
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12.45 mm² |
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Volume:
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14.71 mm³ |
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Length-to-width ratio:
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1.35 |
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Refractive Index:
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1.70 - 1.75 |
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Luster:
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Vitreous |
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Wearability:
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Good |
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Care Instructions:
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Relatively good hardness, but can be brittle |
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Color:
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Diaspore can be found in the following colors:
          
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Birthstone:
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Diaspore is not an official birthstone of any month |
Popular comparisons:
- 1ct Diaspore (Emerald, Light Yellowish Green, 6.74 x 4.99) vs. 1ct Alexandrite (Emerald, Bluish Green, 6.55 x 4.85)
- 2ct Diaspore (Emerald, Light Yellowish Green, 8.49 x 6.29) vs. 4ct Sapphire (Cushion, Blue, 8.88 x 8.88)
- 4.25ct Diaspore (Emerald, Light Yellowish Green, 10.92 x 8.09) vs. 2.35ct Diaspore (Oval, Light Yellowish Green, 10.62 x 7.08)
- 4.25ct Diaspore (Emerald, Light Yellowish Green, 12 x 9) vs. 2.35ct Diaspore (Oval, Light Yellowish Green, 11 x 8)
- 4.25ct Diaspore (Emerald, Light Yellowish Green, 12 x 9) vs. 2.35ct Diaspore (Oval, Light Yellowish Green, 10.62 x 7.08)
- 15ct Diaspore (Emerald, Light Yellowish Green, 16.62 x 12.31) vs. 2.35ct Diaspore (Oval, Light Yellowish Green, 10.62 x 7.08)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1.5ct Tourmaline (Round, Light Red, 7.45 x 7.45) vs. 1.5ct Sapphire (Round, Light Blue, 6.84 x 6.84)