Diaspore (25.90 Carat )
23.61 x 15.74 mm
Stone Type : | Diaspore |
Stone Shape : | Oval |
Stone Weight : | 25.90 carat |
Length X Width : | 23.61 x 15.74 mm |
Length / Width Ratio : | 1.50 |
Approx Face-up Area : | 304.75 mm² |
Approx Volume : | 1,523.39 mm³ |
How many Colors Available for Diaspore ?
Light Red , Red , Dark Red , Light Orange , Light Brown , Brown , Light Yellow , Light Yellowish Green , Yellowish Green , Light Green , Light Violet , Light Purple ,
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.
Name of Stone : | Diaspore |
Mineral : | Diaspore |
Shape : | Oval |
Chemical Formula : | AlO(OH) |
Crystal Structure : | Orthorhombic |
Hardness : | 6.5 - 7 |
Specific Gravity : | 3.4 |
Carat weight : | 25.90 carat |
Gram weight : | 5.180 gm |
Ounces weight : | 0.1827 ounces |
Length : | 23.61 mm |
Width : | 15.74 mm |
Length / Width Ratio : | 1.50 |
Average diameter : | 19.67 mm |
Approx Face-up Area : | 304.75 mm² |
Approx Volume : | 1,523.39 mm³ |
Refractive Index : | 1.70 - 1.75 |
Cleavage : | 1,2;2,1 |
Luster : | Vitreous |
Birefringence : | 0.048 |
Wearability : | Good |
Birthstone : | Diaspore is not an official birthstone for any month |
Before purchasing a diamond, one should make sure it looks its weight. It's important to understand that carat weight does not equal face-up size.
Two diamonds of exactly the same weight (and shape) can vary quite considerably in face-up size. This depends on the proportions of the cut (e.g., deep cuts will face up smaller)..
Face-up area is a measure of the size of the diamond when viewed from the top view.
It tells you how big the diamond is at the girdle plane. It's important for a diamond to have sufficient face-up size for its carat weight
Diamond prices vary greatly as they depend on the combination of unique characteristics (4Cs - Cut, Color, Clarity, and Carat). For best value, it's important to choose the combination that will reduce the price without having a negative impact on appearance.
You also need to consider some of the following points as well
- Strong blue fluorescence.
- Fair or Poor symmetry.
- Extremely thin or extremely thick girdle.
- Inclusions visible to the naked eye.
- Diamond Certification.
Blue fluorescence can have a positive, negative, or zero effect on a diamond. Diamonds in the lower color range (H or lower) can benefit from it, as it can make them look whiter, more colorless. On the other hand, strong fluorescence can cause a stone (especially in the higher color range D-G) to appear hazy or milky under certain light conditions. One of the biggest benefits of fluorescent diamonds is that they generally cost less.
Blue fluorescence can be found in 35% of naturally mined diamonds and it makes the stone glow under UV light. Outside of UV lighting environments, there are no visual differences between fluorescent and non-fluorescent diamonds.
However, there exists a big difference in pricing between these diamonds. In the industry, diamonds with fluorescence are usually traded at a 10-15% discount and can go as high as 25% for higher colored diamonds.
GIA grades fluorescence as None, Faint, Medium, Strong, and Very Strong.
There are Many Laboratory Available which provides certification for Gemstones.
- GIA - Gemological Institute of America
- AGS - American Gemological Society
- HRD - The Hoge Raad voor Diamant
- IGI - International Gemological Institute
- EGL - European Gemological Laboratories
- GSI - Gemological Science International
*Different certification labs give different results
Piecut Diamonds are set of small Diamonds, which are cut & polished with Precised Measurements to look like a Single Solitaire diamond which can save 80% to 85% from Solitaire Single Piece Price.
Shapes of Pie Cut Diamonds.
- 9 Pcs Emerald
- 9 Pcs Round
- 4 Pcs Round
- 3 Pcs Heart
- 4 Pcs Oval
- 4 Pcs Pear
- 4 Pcs Marquise
- 5 Pcs Star
Click here for More Information
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V S
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11.00 ct - Apatite - Trillion
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V S
19.30 ct - Tanzanite - Pear
19.00 ct - Amethyst - Baguette
V S
13.00 ct - Spinel - Round
29.20 ct - Diopside - Pear
V S
29.80 ct - Tanzanite - Pear
25.00 ct - Diaspore - Trillion
V S
25.20 ct - Citrine - Princess
27.00 ct - Spinel - Round
V S
23.70 ct - Hiddenite - Princess
39.10 ct - Benitoite - Oval
V S
32.50 ct - Peridot - Pear
35.50 ct - Emerald - Trillion
V S
37.40 ct - Benitoite - Cushion
33.10 ct - Diopside - Oval
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1.20 ct - Trillion- Diamond
1.30 ct - Round- Diamond
2.80 ct - Baguette- Diamond
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12.60 ct - Trillion- Diamond
17.60 ct - Baguette- Diamond
16.10 ct - Pear- Diamond
13.20 ct - Cushion- Diamond
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12.20 ct - Cushion- Diamond
25.50 ct - Marquise- Diamond
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29.00 ct - Pear- Diamond
24.20 ct - Trillion- Diamond
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29.00 ct - Pear- Diamond
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