Alexandrite (22.90 Carat )
15.68 x 15.68 mm
Stone Type : | Alexandrite |
Stone Shape : | Princess |
Stone Weight : | 22.90 carat |
Length X Width : | 15.68 x 15.68 mm |
Length / Width Ratio : | 1.00 |
Approx Face-up Area : | 245.81 mm² |
Approx Volume : | 1,237.71 mm³ |
How many Colors Available for Alexandrite ?
Red , Dark Red , Light Brown , Brown , Dark Brown , Light Yellowish Green , Yellowish Green , Dark Yellowish Green , Light Green , Green , Dark Green , Light Bluish Green , Bluish Green , Dark Bluish Green , Light Violet , Violet , Dark Violet , Light Purple , Purple , Dark Purple ,
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.
Name of Stone : | Alexandrite |
Mineral : | Chrysoberyl |
Shape : | Princess |
Chemical Formula : | BeAl2O4 |
Crystal Structure : | Orthorhombic |
Hardness : | 8.5 |
Specific Gravity : | 3.7 |
Carat weight : | 22.90 carat |
Gram weight : | 4.580 gm |
Ounces weight : | 0.1616 ounces |
Length : | 15.68 mm |
Width : | 15.68 mm |
Length / Width Ratio : | 1.00 |
Average diameter : | 15.68 mm |
Approx Face-up Area : | 245.81 mm² |
Approx Volume : | 1,237.71 mm³ |
Refractive Index : | 1.744 - 1.755 |
Cleavage : | 1,1 ; 3,2 |
Luster : | Vitreous |
Birefringence : | 0.009 |
Wearability : | Durable gem for daily wear |
Birthstone : | Alexandrite is a birthstone for the month of June |
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
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2.00 ct - Princess - Alexandrite
4.40 ct - Princess - Alexandrite
9.30 ct - Princess - Alexandrite
19.70 ct - Princess - Alexandrite
15.00 ct - Princess - Alexandrite
12.00 ct - Princess - Alexandrite
21.00 ct - Princess - Alexandrite
23.80 ct - Princess - Alexandrite
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33.00 ct - Princess - Alexandrite
34.60 ct - Princess - Alexandrite
30.50 ct - Princess - Alexandrite
4.40 ct - Princess - Alexandrite
9.30 ct - Princess - Alexandrite
19.70 ct - Princess - Alexandrite
15.00 ct - Princess - Alexandrite
12.00 ct - Princess - Alexandrite
21.00 ct - Princess - Alexandrite
23.80 ct - Princess - Alexandrite
24.10 ct - Princess - Alexandrite
33.00 ct - Princess - Alexandrite
34.60 ct - Princess - Alexandrite
30.50 ct - Princess - Alexandrite
1.20 ct - Diamond - Marquise
4.00 ct - Alexandrite - Cushion
9.00 ct - Tanzanite - Princess
2.20 ct - Alexandrite - Marquise
6.50 ct - Hiddenite - Oval
4.80 ct - Diopside - Round
11.10 ct - Apatite - Princess
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18.20 ct - Amethyst - Marquise
16.30 ct - Morganite - Round
10.60 ct - Tanzanite - Pear
16.00 ct - Aquamarine - Pear
22.10 ct - Diopside - Emerald
29.20 ct - Sinhalite - Pear
28.80 ct - Kyanite - Marquise
22.80 ct - Beryl - Baguette
26.90 ct - Alexandrite - Marquise
25.50 ct - Fluorite - Pear
32.30 ct - Tanzanite - Baguette
39.40 ct - Kunzite - Pear
34.70 ct - Alexandrite - Cushion
32.40 ct - Diopside - Oval
35.00 ct - Sinhalite - Pear
36.20 ct - Hiddenite - Round
V S
4.00 ct - Alexandrite - Cushion
9.00 ct - Tanzanite - Princess
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2.20 ct - Alexandrite - Marquise
6.50 ct - Hiddenite - Oval
V S
4.80 ct - Diopside - Round
11.10 ct - Apatite - Princess
V S
17.70 ct - Hiddenite - Oval
18.20 ct - Amethyst - Marquise
V S
16.30 ct - Morganite - Round
10.60 ct - Tanzanite - Pear
V S
16.00 ct - Aquamarine - Pear
22.10 ct - Diopside - Emerald
V S
29.20 ct - Sinhalite - Pear
28.80 ct - Kyanite - Marquise
V S
22.80 ct - Beryl - Baguette
26.90 ct - Alexandrite - Marquise
V S
25.50 ct - Fluorite - Pear
32.30 ct - Tanzanite - Baguette
V S
39.40 ct - Kunzite - Pear
34.70 ct - Alexandrite - Cushion
V S
32.40 ct - Diopside - Oval
35.00 ct - Sinhalite - Pear
V S
36.20 ct - Hiddenite - Round
9.60 ct - Princess- Diamond
7.00 ct - Trillion- Diamond
1.60 ct - Baguette- Diamond
5.90 ct - Pear- Diamond
6.00 ct - Trillion- Diamond
7.40 ct - Trillion- Diamond
19.70 ct - Trillion- Diamond
11.30 ct - Pear- Diamond
10.30 ct - Princess- Diamond
15.70 ct - Princess- Diamond
19.20 ct - Princess- Diamond
11.90 ct - Round- Diamond
23.60 ct - Pear- Diamond
23.00 ct - Marquise- Diamond
27.40 ct - Baguette- Diamond
24.10 ct - Round- Diamond
26.80 ct - Cushion- Diamond
20.00 ct - Marquise- Diamond
32.20 ct - Oval- Diamond
30.90 ct - Emerald- Diamond
36.60 ct - Oval- Diamond
30.00 ct - Marquise- Diamond
39.10 ct - Pear- Diamond
37.30 ct - Marquise- Diamond
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7.00 ct - Trillion- Diamond
1.60 ct - Baguette- Diamond
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5.90 ct - Pear- Diamond
6.00 ct - Trillion- Diamond
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7.40 ct - Trillion- Diamond
19.70 ct - Trillion- Diamond
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11.30 ct - Pear- Diamond
10.30 ct - Princess- Diamond
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15.70 ct - Princess- Diamond
19.20 ct - Princess- Diamond
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11.90 ct - Round- Diamond
23.60 ct - Pear- Diamond
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23.00 ct - Marquise- Diamond
27.40 ct - Baguette- Diamond
V S
24.10 ct - Round- Diamond
26.80 ct - Cushion- Diamond
V S
20.00 ct - Marquise- Diamond
32.20 ct - Oval- Diamond
V S
30.90 ct - Emerald- Diamond
36.60 ct - Oval- Diamond
V S
30.00 ct - Marquise- Diamond
39.10 ct - Pear- Diamond
V S
37.30 ct - Marquise- Diamond