Topaz (25.40 Carat )

21.26 x 14.17 mm
Stone Type : | Topaz |
Stone Shape : | Baguette |
Stone Weight : | 25.40 carat |
Length X Width : | 21.26 x 14.17 mm |
Length / Width Ratio : | 1.50 |
Approx Face-up Area : | 301.25 mm² |
Approx Volume : | 1,439.11 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 : | Baguette |
Chemical Formula : | Al2SiO4(F,OH)2 |
Crystal Structure : | Orthorhombic |
Hardness : | 8 |
Specific Gravity : | 3.53 |
Carat weight : | 25.40 carat |
Gram weight : | 5.080 gm |
Ounces weight : | 0.1792 ounces |
Length : | 21.26 mm |
Width : | 14.17 mm |
Length / Width Ratio : | 1.50 |
Average diameter : | 17.72 mm |
Approx Face-up Area : | 301.25 mm² |
Approx Volume : | 1,439.11 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
8.20 ct - Baguette - Topaz
5.30 ct - Baguette - Topaz
2.80 ct - Baguette - Topaz
11.80 ct - Baguette - Topaz
16.30 ct - Baguette - Topaz
15.40 ct - Baguette - Topaz
21.70 ct - Baguette - Topaz
27.50 ct - Baguette - Topaz
27.50 ct - Baguette - Topaz
34.70 ct - Baguette - Topaz
35.30 ct - Baguette - Topaz
39.60 ct - Baguette - Topaz
5.30 ct - Baguette - Topaz
2.80 ct - Baguette - Topaz
11.80 ct - Baguette - Topaz
16.30 ct - Baguette - Topaz
15.40 ct - Baguette - Topaz
21.70 ct - Baguette - Topaz
27.50 ct - Baguette - Topaz
27.50 ct - Baguette - Topaz
34.70 ct - Baguette - Topaz
35.30 ct - Baguette - Topaz
39.60 ct - Baguette - Topaz
6.20 ct - Quartz - Pear
1.90 ct - Kunzite - Round
8.90 ct - Morganite - Cushion
3.00 ct - Andesine - Trillion
9.30 ct - Fluorite - Round
6.60 ct - Alexandrite - Princess
10.10 ct - Aquamarine - Oval
12.80 ct - Andesine - Cushion
14.30 ct - Alexandrite - Emerald
12.40 ct - Tanzanite - Cushion
18.80 ct - Kunzite - Cushion
16.20 ct - Emerald - Cushion
21.20 ct - Ruby - Emerald
23.90 ct - Quartz - Pear
25.40 ct - Peridot - Pear
28.00 ct - Diaspore - Baguette
29.90 ct - Sapphire - Princess
22.90 ct - Kyanite - Pear
35.70 ct - Diopside - Oval
39.50 ct - Hiddenite - Emerald
38.80 ct - Chrysoberyl - Trillion
33.10 ct - Hiddenite - Pear
30.80 ct - Citrine - Marquise
30.10 ct - Emerald - Baguette
V S
1.90 ct - Kunzite - Round
8.90 ct - Morganite - Cushion
V S
3.00 ct - Andesine - Trillion
9.30 ct - Fluorite - Round
V S
6.60 ct - Alexandrite - Princess
10.10 ct - Aquamarine - Oval
V S
12.80 ct - Andesine - Cushion
14.30 ct - Alexandrite - Emerald
V S
12.40 ct - Tanzanite - Cushion
18.80 ct - Kunzite - Cushion
V S
16.20 ct - Emerald - Cushion
21.20 ct - Ruby - Emerald
V S
23.90 ct - Quartz - Pear
25.40 ct - Peridot - Pear
V S
28.00 ct - Diaspore - Baguette
29.90 ct - Sapphire - Princess
V S
22.90 ct - Kyanite - Pear
35.70 ct - Diopside - Oval
V S
39.50 ct - Hiddenite - Emerald
38.80 ct - Chrysoberyl - Trillion
V S
33.10 ct - Hiddenite - Pear
30.80 ct - Citrine - Marquise
V S
30.10 ct - Emerald - Baguette
3.30 ct - Round- Diamond
4.30 ct - Marquise- Diamond
4.10 ct - Oval- Diamond
1.90 ct - Princess- Diamond
4.90 ct - Trillion- Diamond
7.90 ct - Emerald- Diamond
16.60 ct - Emerald- Diamond
11.20 ct - Trillion- Diamond
13.30 ct - Marquise- Diamond
13.90 ct - Emerald- Diamond
13.30 ct - Trillion- Diamond
10.20 ct - Emerald- Diamond
21.00 ct - Cushion- Diamond
25.70 ct - Trillion- Diamond
24.50 ct - Trillion- Diamond
29.90 ct - Princess- Diamond
25.60 ct - Oval- Diamond
26.70 ct - Baguette- Diamond
35.30 ct - Marquise- Diamond
36.70 ct - Marquise- Diamond
34.20 ct - Emerald- Diamond
30.60 ct - Oval- Diamond
37.90 ct - Baguette- Diamond
31.20 ct - Marquise- Diamond
V S
4.30 ct - Marquise- Diamond
4.10 ct - Oval- Diamond
V S
1.90 ct - Princess- Diamond
4.90 ct - Trillion- Diamond
V S
7.90 ct - Emerald- Diamond
16.60 ct - Emerald- Diamond
V S
11.20 ct - Trillion- Diamond
13.30 ct - Marquise- Diamond
V S
13.90 ct - Emerald- Diamond
13.30 ct - Trillion- Diamond
V S
10.20 ct - Emerald- Diamond
21.00 ct - Cushion- Diamond
V S
25.70 ct - Trillion- Diamond
24.50 ct - Trillion- Diamond
V S
29.90 ct - Princess- Diamond
25.60 ct - Oval- Diamond
V S
26.70 ct - Baguette- Diamond
35.30 ct - Marquise- Diamond
V S
36.70 ct - Marquise- Diamond
34.20 ct - Emerald- Diamond
V S
30.60 ct - Oval- Diamond
37.90 ct - Baguette- Diamond
V S
31.20 ct - Marquise- Diamond