Topaz (37.70 Carat )
34.57 x 17.29 mm
Stone Type : | Topaz |
Stone Shape : | Marquise |
Stone Weight : | 37.70 carat |
Length X Width : | 34.57 x 17.29 mm |
Length / Width Ratio : | 2.00 |
Approx Face-up Area : | 424.27 mm² |
Approx Volume : | 2,136.01 mm³ |
How many Colors Available for Topaz ?
White , Light Red , Red , Dark Red , Orangey Red , Light Orange , Orange , Light Brown , Brown , Dark Brown , Light Yellow , Yellow , Light Yellowish Green , Yellowish Green , Dark Yellowish Green , Light Green , Green , Dark Green , Light Bluish Green , Bluish Green , Dark Bluish Green , Light Blue , Blue , Dark Blue , Light Violet , Violet , Dark Violet , Light Purple , Purple , Dark Purple , Light Grey , Grey ,
Topaz is a gemstone of many colors. It’s commonly found colorless (white) and then treated to achieve desired colors. Blue Topaz is the most common and popular color variety.
Name of Stone : | Topaz |
Mineral : | Topaz |
Shape : | Marquise |
Chemical Formula : | Al2SiO4(F,OH)2 |
Crystal Structure : | Orthorhombic |
Hardness : | 8 |
Specific Gravity : | 3.53 |
Carat weight : | 37.70 carat |
Gram weight : | 7.540 gm |
Ounces weight : | 0.2660 ounces |
Length : | 34.57 mm |
Width : | 17.29 mm |
Length / Width Ratio : | 2.00 |
Average diameter : | 25.93 mm |
Approx Face-up Area : | 424.27 mm² |
Approx Volume : | 2,136.01 mm³ |
Refractive Index : | 1.610 - 1.638 |
Cleavage : | 1,3 - basal |
Luster : | Vitreous |
Birefringence : | 0.014 |
Wearability : | Very good |
Birthstone : | Topaz is a birthstone for the month of December |
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
2.00 ct - Marquise - Topaz
1.00 ct - Marquise - Topaz
2.00 ct - Marquise - Topaz
18.10 ct - Marquise - Topaz
10.30 ct - Marquise - Topaz
19.30 ct - Marquise - Topaz
21.50 ct - Marquise - Topaz
22.90 ct - Marquise - Topaz
20.60 ct - Marquise - Topaz
38.20 ct - Marquise - Topaz
32.20 ct - Marquise - Topaz
31.70 ct - Marquise - Topaz
1.00 ct - Marquise - Topaz
2.00 ct - Marquise - Topaz
18.10 ct - Marquise - Topaz
10.30 ct - Marquise - Topaz
19.30 ct - Marquise - Topaz
21.50 ct - Marquise - Topaz
22.90 ct - Marquise - Topaz
20.60 ct - Marquise - Topaz
38.20 ct - Marquise - Topaz
32.20 ct - Marquise - Topaz
31.70 ct - Marquise - Topaz
0.50 ct - Ruby - Marquise
6.30 ct - Beryl - Round
6.50 ct - Andesine - Trillion
8.50 ct - Diamond - Round
9.70 ct - Diamond - Baguette
7.80 ct - Diopside - Pear
16.80 ct - Ruby - Round
18.90 ct - Kunzite - Marquise
13.00 ct - Amethyst - Oval
11.70 ct - Emerald - Emerald
18.30 ct - Citrine - Pear
11.70 ct - Amethyst - Princess
25.30 ct - Diamond - Emerald
20.30 ct - Diopside - Princess
27.00 ct - Sapphire - Princess
26.00 ct - Kyanite - Oval
26.40 ct - Diaspore - Round
28.80 ct - Diopside - Princess
38.80 ct - Peridot - Oval
32.80 ct - Sinhalite - Trillion
38.70 ct - Diopside - Trillion
33.40 ct - Diopside - Oval
38.80 ct - Emerald - Baguette
36.90 ct - Quartz - Princess
V S
6.30 ct - Beryl - Round
6.50 ct - Andesine - Trillion
V S
8.50 ct - Diamond - Round
9.70 ct - Diamond - Baguette
V S
7.80 ct - Diopside - Pear
16.80 ct - Ruby - Round
V S
18.90 ct - Kunzite - Marquise
13.00 ct - Amethyst - Oval
V S
11.70 ct - Emerald - Emerald
18.30 ct - Citrine - Pear
V S
11.70 ct - Amethyst - Princess
25.30 ct - Diamond - Emerald
V S
20.30 ct - Diopside - Princess
27.00 ct - Sapphire - Princess
V S
26.00 ct - Kyanite - Oval
26.40 ct - Diaspore - Round
V S
28.80 ct - Diopside - Princess
38.80 ct - Peridot - Oval
V S
32.80 ct - Sinhalite - Trillion
38.70 ct - Diopside - Trillion
V S
33.40 ct - Diopside - Oval
38.80 ct - Emerald - Baguette
V S
36.90 ct - Quartz - Princess
1.80 ct - Pear- Diamond
4.50 ct - Pear- Diamond
3.90 ct - Emerald- Diamond
5.70 ct - Trillion- Diamond
4.70 ct - Emerald- Diamond
5.10 ct - Oval- Diamond
16.70 ct - Round- Diamond
10.30 ct - Oval- Diamond
11.00 ct - Round- Diamond
18.90 ct - Emerald- Diamond
17.70 ct - Cushion- Diamond
16.70 ct - Emerald- Diamond
25.60 ct - Cushion- Diamond
24.60 ct - Oval- Diamond
28.50 ct - Marquise- Diamond
21.00 ct - Emerald- Diamond
23.30 ct - Round- Diamond
27.60 ct - Round- Diamond
39.60 ct - Marquise- Diamond
36.80 ct - Baguette- Diamond
32.20 ct - Trillion- Diamond
34.60 ct - Trillion- Diamond
39.80 ct - Trillion- Diamond
37.70 ct - Trillion- Diamond
V S
4.50 ct - Pear- Diamond
3.90 ct - Emerald- Diamond
V S
5.70 ct - Trillion- Diamond
4.70 ct - Emerald- Diamond
V S
5.10 ct - Oval- Diamond
16.70 ct - Round- Diamond
V S
10.30 ct - Oval- Diamond
11.00 ct - Round- Diamond
V S
18.90 ct - Emerald- Diamond
17.70 ct - Cushion- Diamond
V S
16.70 ct - Emerald- Diamond
25.60 ct - Cushion- Diamond
V S
24.60 ct - Oval- Diamond
28.50 ct - Marquise- Diamond
V S
21.00 ct - Emerald- Diamond
23.30 ct - Round- Diamond
V S
27.60 ct - Round- Diamond
39.60 ct - Marquise- Diamond
V S
36.80 ct - Baguette- Diamond
32.20 ct - Trillion- Diamond
V S
34.60 ct - Trillion- Diamond
39.80 ct - Trillion- Diamond
V S
37.70 ct - Trillion- Diamond