Topaz (10.40 Carat )
17.22 x 11.48 mm
Stone Type : | Topaz |
Stone Shape : | Oval |
Stone Weight : | 10.40 carat |
Length X Width : | 17.22 x 11.48 mm |
Length / Width Ratio : | 1.50 |
Approx Face-up Area : | 162.12 mm² |
Approx Volume : | 589.24 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 : | Oval |
Chemical Formula : | Al2SiO4(F,OH)2 |
Crystal Structure : | Orthorhombic |
Hardness : | 8 |
Specific Gravity : | 3.53 |
Carat weight : | 10.40 carat |
Gram weight : | 2.080 gm |
Ounces weight : | 0.0734 ounces |
Length : | 17.22 mm |
Width : | 11.48 mm |
Length / Width Ratio : | 1.50 |
Average diameter : | 14.35 mm |
Approx Face-up Area : | 162.12 mm² |
Approx Volume : | 589.24 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
7.30 ct - Emerald - Emerald
4.60 ct - Quartz - Round
8.80 ct - Diaspore - Oval
4.30 ct - Sapphire - Round
1.00 ct - Emerald - Emerald
8.90 ct - Apatite - Princess
15.10 ct - Tanzanite - Princess
18.30 ct - Alexandrite - Trillion
13.30 ct - Fluorite - Pear
19.50 ct - Hiddenite - Emerald
11.90 ct - Fluorite - Pear
16.90 ct - Beryl - Princess
29.50 ct - Citrine - Princess
29.40 ct - Citrine - Marquise
28.70 ct - Hiddenite - Round
21.20 ct - Sapphire - Cushion
29.30 ct - Aquamarine - Princess
26.70 ct - Chrysoberyl - Trillion
37.40 ct - Kunzite - Emerald
35.90 ct - Spinel - Cushion
37.30 ct - Emerald - Trillion
32.10 ct - Alexandrite - Oval
34.60 ct - Fluorite - Marquise
35.00 ct - Quartz - Oval
V S
4.60 ct - Quartz - Round
8.80 ct - Diaspore - Oval
V S
4.30 ct - Sapphire - Round
1.00 ct - Emerald - Emerald
V S
8.90 ct - Apatite - Princess
15.10 ct - Tanzanite - Princess
V S
18.30 ct - Alexandrite - Trillion
13.30 ct - Fluorite - Pear
V S
19.50 ct - Hiddenite - Emerald
11.90 ct - Fluorite - Pear
V S
16.90 ct - Beryl - Princess
29.50 ct - Citrine - Princess
V S
29.40 ct - Citrine - Marquise
28.70 ct - Hiddenite - Round
V S
21.20 ct - Sapphire - Cushion
29.30 ct - Aquamarine - Princess
V S
26.70 ct - Chrysoberyl - Trillion
37.40 ct - Kunzite - Emerald
V S
35.90 ct - Spinel - Cushion
37.30 ct - Emerald - Trillion
V S
32.10 ct - Alexandrite - Oval
34.60 ct - Fluorite - Marquise
V S
35.00 ct - Quartz - Oval
9.80 ct - Baguette- Diamond
4.70 ct - Emerald- Diamond
0.80 ct - Oval- Diamond
8.40 ct - Cushion- Diamond
5.60 ct - Pear- Diamond
7.00 ct - Baguette- Diamond
11.10 ct - Baguette- Diamond
11.90 ct - Cushion- Diamond
19.80 ct - Oval- Diamond
12.50 ct - Oval- Diamond
12.00 ct - Round- Diamond
11.30 ct - Round- Diamond
26.40 ct - Pear- Diamond
27.10 ct - Baguette- Diamond
23.80 ct - Pear- Diamond
26.10 ct - Emerald- Diamond
24.70 ct - Pear- Diamond
22.80 ct - Baguette- Diamond
33.70 ct - Pear- Diamond
36.20 ct - Round- Diamond
30.50 ct - Emerald- Diamond
39.80 ct - Princess- Diamond
36.30 ct - Oval- Diamond
39.90 ct - Trillion- Diamond
V S
4.70 ct - Emerald- Diamond
0.80 ct - Oval- Diamond
V S
8.40 ct - Cushion- Diamond
5.60 ct - Pear- Diamond
V S
7.00 ct - Baguette- Diamond
11.10 ct - Baguette- Diamond
V S
11.90 ct - Cushion- Diamond
19.80 ct - Oval- Diamond
V S
12.50 ct - Oval- Diamond
12.00 ct - Round- Diamond
V S
11.30 ct - Round- Diamond
26.40 ct - Pear- Diamond
V S
27.10 ct - Baguette- Diamond
23.80 ct - Pear- Diamond
V S
26.10 ct - Emerald- Diamond
24.70 ct - Pear- Diamond
V S
22.80 ct - Baguette- Diamond
33.70 ct - Pear- Diamond
V S
36.20 ct - Round- Diamond
30.50 ct - Emerald- Diamond
V S
39.80 ct - Princess- Diamond
36.30 ct - Oval- Diamond
V S
39.90 ct - Trillion- Diamond