7.5 Carat Benitoite (Pear, 17.16×10.34mm, Blue)
Color:
Actual size is set for screen
How big is a 7.5 carat pear-cut Benitoite?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 7.5ct pear-cut Benitoite would be around 17.16×10.34 mm (±6%). The lw ratio of this Benitoite is 1.66. See below how big it looks on a ring and finger.
Ring:
Skin tone:
|
Ring width:
3.0 mm
|
Saved...
64 mm
| Your settings | |
|---|---|
Ring |
Gold |
Skin tone |
Light |
Ring diameter |
16.9 mm |
Ring width |
3.0 mm |
Finger length |
64 mm |
Finger coverage |
62 % |
|
Saved...
|
|
|
Ring diameter:
16.9 mm
|
Additional Info
Benitoite is a very rare blue gem first discovered in San Benito, California (hence the name). Benitoite is California state’s official gem.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Gem Details
|
Name:
|
Benitoite |
|
Shape:
|
Pear |
|
Chemical Formula:
|
BaTiSi3O9 |
|
Crystal Structure:
|
Hexagonal |
|
Hardness:
|
6 - 6.5 |
|
Specific Gravity
|
3.65 |
|
Carat weight:
|
7.5 ct |
|
Gram weight:
|
1.5 g (0.0529 ounces) |
|
Points:
|
750 pts |
|
Length:
|
17.16 mm |
|
Width:
|
10.34 mm |
|
Est. face-up size:
|
129.53 mm² |
|
Volume:
|
410.96 mm³ |
|
Length-to-width ratio:
|
1.66 |
|
Refractive Index:
|
1.75-1.80 |
|
Luster:
|
Vitreous |
|
Wearability:
|
|
|
Care Instructions:
|
|
|
Color:
|
Benitoite can be found in the following colors:
  
|
|
Birthstone:
|
Benitoite is not an official birthstone of any month |
Popular comparisons:
- 2ct Benitoite (Pear, Blue, 10.79 x 6.5) vs. 4ct Sapphire (Princess, Blue, 8.53 x 8.53)
- 1.15ct Benitoite (Pear, Dark Blue, 8.96 x 5.4) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 5ct Benitoite (Pear, Blue, 14.64 x 8.82) vs. 5ct Kyanite (Pear, Blue, 14.61 x 8.8)
- 1ct Benitoite (Pear, Blue, 7 x 7) vs. 1ct Diamond (Round, Light Gray, 6.5 x 6.5)
- 8ct Benitoite (Pear, Blue, 17.13 x 10.32) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1.15ct Benitoite (Pear, Light Blue, 8.96 x 5.4) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 5ct Benitoite (Pear, Blue, 14.64 x 8.82) vs. 5ct Kyanite (Marquise, Blue, 17.36 x 8.68)
- 4ct Benitoite (Pear, Blue, 13.6 x 8.19) vs. 4ct Kyanite (Pear, Blue, 13.56 x 8.17)