Benitoite (31.10 Carat )

19.37 x 19.37 mm
Stone Type : | Benitoite |
Stone Shape : | Round |
Stone Weight : | 31.10 carat |
Length X Width : | 19.37 x 19.37 mm |
Length / Width Ratio : | 1.00 |
Approx Face-up Area : | 294.70 mm² |
Approx Volume : | 1,703.91 mm³ |
How many Colors Available for Benitoite ?
White , Light Blue , Blue , Dark Blue ,




Benitoite is a very rare blue gem first discovered in San Benito, California (hence the name). Benitoite is California state’s official gem.
Name of Stone : | Benitoite |
Mineral : | Benitoite |
Shape : | Round |
Chemical Formula : | BaTiSi3O9 |
Crystal Structure : | Hexagonal |
Hardness : | 6 - 6.5 |
Specific Gravity : | 3.65 |
Carat weight : | 31.10 carat |
Gram weight : | 6.220 gm |
Ounces weight : | 0.2194 ounces |
Length : | 19.37 mm |
Width : | 19.37 mm |
Length / Width Ratio : | 1.00 |
Average diameter : | 19.37 mm |
Approx Face-up Area : | 294.70 mm² |
Approx Volume : | 1,703.91 mm³ |
Refractive Index : | 1.75-1.80 |
Cleavage : | None |
Luster : | Vitreous |
Birefringence : | 0.047 |
Wearability : | N / A |
Birthstone : | Benitoite is not an official birthstone for any month |
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
3.70 ct - Round - Benitoite
0.80 ct - Round - Benitoite
5.00 ct - Round - Benitoite
10.50 ct - Round - Benitoite
16.90 ct - Round - Benitoite
13.20 ct - Round - Benitoite
21.40 ct - Round - Benitoite
27.30 ct - Round - Benitoite
28.70 ct - Round - Benitoite
37.40 ct - Round - Benitoite
38.20 ct - Round - Benitoite
30.70 ct - Round - Benitoite
0.80 ct - Round - Benitoite
5.00 ct - Round - Benitoite
10.50 ct - Round - Benitoite
16.90 ct - Round - Benitoite
13.20 ct - Round - Benitoite
21.40 ct - Round - Benitoite
27.30 ct - Round - Benitoite
28.70 ct - Round - Benitoite
37.40 ct - Round - Benitoite
38.20 ct - Round - Benitoite
30.70 ct - Round - Benitoite
1.30 ct - Spinel - Emerald
9.50 ct - Citrine - Marquise
2.10 ct - Beryl - Oval
3.90 ct - Spinel - Emerald
3.20 ct - Benitoite - Round
5.70 ct - Sapphire - Oval
11.30 ct - Hiddenite - Emerald
18.80 ct - Spinel - Oval
16.70 ct - Apatite - Cushion
16.20 ct - Ruby - Trillion
17.90 ct - Spinel - Round
10.20 ct - Beryl - Cushion
24.40 ct - Citrine - Marquise
29.40 ct - Peridot - Oval
29.70 ct - Emerald - Oval
22.60 ct - Diaspore - Princess
23.50 ct - Citrine - Oval
29.30 ct - Diaspore - Oval
37.90 ct - Beryl - Marquise
34.10 ct - Sinhalite - Pear
32.70 ct - Tanzanite - Pear
38.30 ct - Hiddenite - Cushion
30.10 ct - Sinhalite - Pear
39.90 ct - Diaspore - Trillion
V S
9.50 ct - Citrine - Marquise
2.10 ct - Beryl - Oval
V S
3.90 ct - Spinel - Emerald
3.20 ct - Benitoite - Round
V S
5.70 ct - Sapphire - Oval
11.30 ct - Hiddenite - Emerald
V S
18.80 ct - Spinel - Oval
16.70 ct - Apatite - Cushion
V S
16.20 ct - Ruby - Trillion
17.90 ct - Spinel - Round
V S
10.20 ct - Beryl - Cushion
24.40 ct - Citrine - Marquise
V S
29.40 ct - Peridot - Oval
29.70 ct - Emerald - Oval
V S
22.60 ct - Diaspore - Princess
23.50 ct - Citrine - Oval
V S
29.30 ct - Diaspore - Oval
37.90 ct - Beryl - Marquise
V S
34.10 ct - Sinhalite - Pear
32.70 ct - Tanzanite - Pear
V S
38.30 ct - Hiddenite - Cushion
30.10 ct - Sinhalite - Pear
V S
39.90 ct - Diaspore - Trillion
6.30 ct - Princess- Diamond
4.90 ct - Marquise- Diamond
5.40 ct - Oval- Diamond
5.10 ct - Baguette- Diamond
4.70 ct - Baguette- Diamond
8.90 ct - Oval- Diamond
12.90 ct - Oval- Diamond
18.80 ct - Emerald- Diamond
18.90 ct - Princess- Diamond
16.30 ct - Cushion- Diamond
19.00 ct - Trillion- Diamond
18.40 ct - Cushion- Diamond
21.80 ct - Marquise- Diamond
26.70 ct - Emerald- Diamond
22.90 ct - Baguette- Diamond
26.10 ct - Oval- Diamond
25.50 ct - Trillion- Diamond
25.10 ct - Cushion- Diamond
34.40 ct - Round- Diamond
39.10 ct - Trillion- Diamond
38.40 ct - Emerald- Diamond
31.90 ct - Pear- Diamond
35.90 ct - Round- Diamond
35.70 ct - Princess- Diamond
V S
4.90 ct - Marquise- Diamond
5.40 ct - Oval- Diamond
V S
5.10 ct - Baguette- Diamond
4.70 ct - Baguette- Diamond
V S
8.90 ct - Oval- Diamond
12.90 ct - Oval- Diamond
V S
18.80 ct - Emerald- Diamond
18.90 ct - Princess- Diamond
V S
16.30 ct - Cushion- Diamond
19.00 ct - Trillion- Diamond
V S
18.40 ct - Cushion- Diamond
21.80 ct - Marquise- Diamond
V S
26.70 ct - Emerald- Diamond
22.90 ct - Baguette- Diamond
V S
26.10 ct - Oval- Diamond
25.50 ct - Trillion- Diamond
V S
25.10 ct - Cushion- Diamond
34.40 ct - Round- Diamond
V S
39.10 ct - Trillion- Diamond
38.40 ct - Emerald- Diamond
V S
31.90 ct - Pear- Diamond
35.90 ct - Round- Diamond
V S
35.70 ct - Princess- Diamond