Alexandrite (4.50 Carat )
14.07 x 8.47 mm
Stone Type : | Alexandrite |
Stone Shape : | Pear |
Stone Weight : | 4.50 carat |
Length X Width : | 14.07 x 8.47 mm |
Length / Width Ratio : | 1.66 |
Approx Face-up Area : | 86.98 mm² |
Approx Volume : | 243.22 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 : | Pear |
Chemical Formula : | BeAl2O4 |
Crystal Structure : | Orthorhombic |
Hardness : | 8.5 |
Specific Gravity : | 3.7 |
Carat weight : | 4.50 carat |
Gram weight : | 0.900 gm |
Ounces weight : | 0.0317 ounces |
Length : | 14.07 mm |
Width : | 8.47 mm |
Length / Width Ratio : | 1.66 |
Average diameter : | 11.27 mm |
Approx Face-up Area : | 86.98 mm² |
Approx Volume : | 243.22 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
Click here for More Information
8.60 ct - Pear - Alexandrite
4.50 ct - Pear - Alexandrite
6.40 ct - Pear - Alexandrite
17.10 ct - Pear - Alexandrite
10.90 ct - Pear - Alexandrite
15.20 ct - Pear - Alexandrite
24.90 ct - Pear - Alexandrite
25.00 ct - Pear - Alexandrite
24.00 ct - Pear - Alexandrite
35.80 ct - Pear - Alexandrite
39.30 ct - Pear - Alexandrite
36.00 ct - Pear - Alexandrite
4.50 ct - Pear - Alexandrite
6.40 ct - Pear - Alexandrite
17.10 ct - Pear - Alexandrite
10.90 ct - Pear - Alexandrite
15.20 ct - Pear - Alexandrite
24.90 ct - Pear - Alexandrite
25.00 ct - Pear - Alexandrite
24.00 ct - Pear - Alexandrite
35.80 ct - Pear - Alexandrite
39.30 ct - Pear - Alexandrite
36.00 ct - Pear - Alexandrite
1.20 ct - Morganite - Princess
1.90 ct - Morganite - Oval
1.40 ct - Kunzite - Emerald
2.70 ct - Citrine - Marquise
6.80 ct - Quartz - Round
5.50 ct - Kyanite - Emerald
12.60 ct - Beryl - Emerald
16.00 ct - Morganite - Baguette
12.60 ct - Chrysoberyl - Round
12.10 ct - Amethyst - Round
18.10 ct - Diaspore - Trillion
12.20 ct - Diaspore - Baguette
21.00 ct - Ruby - Princess
22.60 ct - Diaspore - Baguette
26.40 ct - Apatite - Trillion
25.60 ct - Emerald - Baguette
23.90 ct - Ruby - Cushion
23.10 ct - Emerald - Emerald
32.80 ct - Morganite - Trillion
40.00 ct - Diaspore - Round
33.20 ct - Alexandrite - Cushion
31.40 ct - Andesine - Pear
36.70 ct - Tanzanite - Baguette
33.90 ct - Sinhalite - Oval
V S
1.90 ct - Morganite - Oval
1.40 ct - Kunzite - Emerald
V S
2.70 ct - Citrine - Marquise
6.80 ct - Quartz - Round
V S
5.50 ct - Kyanite - Emerald
12.60 ct - Beryl - Emerald
V S
16.00 ct - Morganite - Baguette
12.60 ct - Chrysoberyl - Round
V S
12.10 ct - Amethyst - Round
18.10 ct - Diaspore - Trillion
V S
12.20 ct - Diaspore - Baguette
21.00 ct - Ruby - Princess
V S
22.60 ct - Diaspore - Baguette
26.40 ct - Apatite - Trillion
V S
25.60 ct - Emerald - Baguette
23.90 ct - Ruby - Cushion
V S
23.10 ct - Emerald - Emerald
32.80 ct - Morganite - Trillion
V S
40.00 ct - Diaspore - Round
33.20 ct - Alexandrite - Cushion
V S
31.40 ct - Andesine - Pear
36.70 ct - Tanzanite - Baguette
V S
33.90 ct - Sinhalite - Oval
3.80 ct - Cushion- Diamond
4.60 ct - Oval- Diamond
9.00 ct - Emerald- Diamond
4.40 ct - Marquise- Diamond
7.60 ct - Emerald- Diamond
0.60 ct - Oval- Diamond
14.70 ct - Marquise- Diamond
15.30 ct - Cushion- Diamond
13.10 ct - Princess- Diamond
10.60 ct - Princess- Diamond
19.50 ct - Cushion- Diamond
10.90 ct - Cushion- Diamond
25.80 ct - Emerald- Diamond
26.20 ct - Baguette- Diamond
23.20 ct - Emerald- Diamond
20.80 ct - Princess- Diamond
23.20 ct - Baguette- Diamond
29.80 ct - Emerald- Diamond
39.30 ct - Round- Diamond
30.10 ct - Cushion- Diamond
31.80 ct - Trillion- Diamond
38.60 ct - Cushion- Diamond
30.80 ct - Oval- Diamond
31.10 ct - Pear- Diamond
V S
4.60 ct - Oval- Diamond
9.00 ct - Emerald- Diamond
V S
4.40 ct - Marquise- Diamond
7.60 ct - Emerald- Diamond
V S
0.60 ct - Oval- Diamond
14.70 ct - Marquise- Diamond
V S
15.30 ct - Cushion- Diamond
13.10 ct - Princess- Diamond
V S
10.60 ct - Princess- Diamond
19.50 ct - Cushion- Diamond
V S
10.90 ct - Cushion- Diamond
25.80 ct - Emerald- Diamond
V S
26.20 ct - Baguette- Diamond
23.20 ct - Emerald- Diamond
V S
20.80 ct - Princess- Diamond
23.20 ct - Baguette- Diamond
V S
29.80 ct - Emerald- Diamond
39.30 ct - Round- Diamond
V S
30.10 ct - Cushion- Diamond
31.80 ct - Trillion- Diamond
V S
38.60 ct - Cushion- Diamond
30.80 ct - Oval- Diamond
V S
31.10 ct - Pear- Diamond