Topaz (19.40 Carat )
27.70 x 13.85 mm
Stone Type : | Topaz |
Stone Shape : | Marquise |
Stone Weight : | 19.40 carat |
Length X Width : | 27.70 x 13.85 mm |
Length / Width Ratio : | 2.00 |
Approx Face-up Area : | 272.46 mm² |
Approx Volume : | 1,099.16 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 : | 19.40 carat |
Gram weight : | 3.880 gm |
Ounces weight : | 0.1369 ounces |
Length : | 27.70 mm |
Width : | 13.85 mm |
Length / Width Ratio : | 2.00 |
Average diameter : | 20.78 mm |
Approx Face-up Area : | 272.46 mm² |
Approx Volume : | 1,099.16 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
7.70 ct - Marquise - Topaz
4.40 ct - Marquise - Topaz
7.60 ct - Marquise - Topaz
19.20 ct - Marquise - Topaz
19.30 ct - Marquise - Topaz
16.60 ct - Marquise - Topaz
28.20 ct - Marquise - Topaz
27.10 ct - Marquise - Topaz
22.50 ct - Marquise - Topaz
30.40 ct - Marquise - Topaz
31.90 ct - Marquise - Topaz
38.60 ct - Marquise - Topaz
4.40 ct - Marquise - Topaz
7.60 ct - Marquise - Topaz
19.20 ct - Marquise - Topaz
19.30 ct - Marquise - Topaz
16.60 ct - Marquise - Topaz
28.20 ct - Marquise - Topaz
27.10 ct - Marquise - Topaz
22.50 ct - Marquise - Topaz
30.40 ct - Marquise - Topaz
31.90 ct - Marquise - Topaz
38.60 ct - Marquise - Topaz
3.20 ct - Diopside - Baguette
9.90 ct - Chrysoberyl - Baguette
2.90 ct - Morganite - Pear
3.10 ct - Hiddenite - Marquise
4.90 ct - Aquamarine - Trillion
5.00 ct - Diamond - Trillion
19.00 ct - Diamond - Round
10.80 ct - Benitoite - Cushion
14.10 ct - Fluorite - Oval
14.80 ct - Andesine - Baguette
11.70 ct - Kyanite - Marquise
14.20 ct - Alexandrite - Baguette
28.80 ct - Sapphire - Pear
26.90 ct - Diaspore - Marquise
24.40 ct - Ruby - Emerald
24.10 ct - Hiddenite - Baguette
28.40 ct - Morganite - Marquise
29.30 ct - Emerald - Pear
39.20 ct - Sapphire - Cushion
34.10 ct - Alexandrite - Princess
31.50 ct - Beryl - Emerald
31.00 ct - Emerald - Pear
37.80 ct - Chrysoberyl - Pear
37.60 ct - Emerald - Emerald
V S
9.90 ct - Chrysoberyl - Baguette
2.90 ct - Morganite - Pear
V S
3.10 ct - Hiddenite - Marquise
4.90 ct - Aquamarine - Trillion
V S
5.00 ct - Diamond - Trillion
19.00 ct - Diamond - Round
V S
10.80 ct - Benitoite - Cushion
14.10 ct - Fluorite - Oval
V S
14.80 ct - Andesine - Baguette
11.70 ct - Kyanite - Marquise
V S
14.20 ct - Alexandrite - Baguette
28.80 ct - Sapphire - Pear
V S
26.90 ct - Diaspore - Marquise
24.40 ct - Ruby - Emerald
V S
24.10 ct - Hiddenite - Baguette
28.40 ct - Morganite - Marquise
V S
29.30 ct - Emerald - Pear
39.20 ct - Sapphire - Cushion
V S
34.10 ct - Alexandrite - Princess
31.50 ct - Beryl - Emerald
V S
31.00 ct - Emerald - Pear
37.80 ct - Chrysoberyl - Pear
V S
37.60 ct - Emerald - Emerald
3.00 ct - Marquise- Diamond
8.10 ct - Marquise- Diamond
7.80 ct - Round- Diamond
7.10 ct - Round- Diamond
3.40 ct - Marquise- Diamond
2.40 ct - Emerald- Diamond
10.20 ct - Round- Diamond
15.70 ct - Round- Diamond
10.00 ct - Princess- Diamond
15.40 ct - Round- Diamond
13.10 ct - Marquise- Diamond
13.50 ct - Baguette- Diamond
28.20 ct - Marquise- Diamond
24.70 ct - Princess- Diamond
20.50 ct - Oval- Diamond
20.00 ct - Cushion- Diamond
29.00 ct - Baguette- Diamond
24.10 ct - Princess- Diamond
30.70 ct - Pear- Diamond
34.60 ct - Emerald- Diamond
31.40 ct - Cushion- Diamond
31.30 ct - Oval- Diamond
31.30 ct - Baguette- Diamond
32.00 ct - Cushion- Diamond
V S
8.10 ct - Marquise- Diamond
7.80 ct - Round- Diamond
V S
7.10 ct - Round- Diamond
3.40 ct - Marquise- Diamond
V S
2.40 ct - Emerald- Diamond
10.20 ct - Round- Diamond
V S
15.70 ct - Round- Diamond
10.00 ct - Princess- Diamond
V S
15.40 ct - Round- Diamond
13.10 ct - Marquise- Diamond
V S
13.50 ct - Baguette- Diamond
28.20 ct - Marquise- Diamond
V S
24.70 ct - Princess- Diamond
20.50 ct - Oval- Diamond
V S
20.00 ct - Cushion- Diamond
29.00 ct - Baguette- Diamond
V S
24.10 ct - Princess- Diamond
30.70 ct - Pear- Diamond
V S
34.60 ct - Emerald- Diamond
31.40 ct - Cushion- Diamond
V S
31.30 ct - Oval- Diamond
31.30 ct - Baguette- Diamond
V S
32.00 ct - Cushion- Diamond