26 Carat Tourmaline (Cabochon, 22.17×14.78mm, Purple)
Color:
Actual size is set for screen
How big is a 26 carat cabochon-cut Tourmaline?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 26ct cabochon-cut Tourmaline would be around 22.17×14.78 mm (±6%). The lw ratio of this Tourmaline is 1.5. 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 |
88 % |
|
Saved...
|
|
|
Ring diameter:
16.9 mm
|
Additional Info
Tourmaline has been a very popular gemstone since antiquity. It comes in a wide variety of colors, many times with two, or even three colors at once. It got its name from the Sinhalese word "turamali", which means "stone of mixed colors".
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Gem Details
|
Name:
|
Tourmaline |
|
Shape:
|
Cabochon |
|
Chemical Formula:
|
N/a |
|
Crystal Structure:
|
Hexagonal |
|
Hardness:
|
7 - 7.5 |
|
Specific Gravity
|
3.06 |
|
Carat weight:
|
26 ct |
|
Gram weight:
|
5.2 g (0.1834 ounces) |
|
Points:
|
2600 pts |
|
Length:
|
22.17 mm |
|
Width:
|
14.78 mm |
|
Est. face-up size:
|
268.69 mm² |
|
Volume:
|
1699.35 mm³ |
|
Length-to-width ratio:
|
1.5 |
|
Refractive Index:
|
1.616 - 1.650 |
|
Luster:
|
Vitreous |
|
Wearability:
|
Very good |
|
Care Instructions:
|
No special or unusual care |
|
Color:
|
Tourmaline can be found in the following colors:
                               
|
|
Birthstone:
|
Tourmaline is a birthstone for the month of October |
Popular comparisons:
- 1.2ct Tourmaline (Cabochon, Violet, 7.92 x 5.28) vs. 0.45ct Sapphire (Pear, Blue, 6.36 x 3.83)
- 4ct Tourmaline (Cabochon, Violet, 11.82 x 7.88) vs. 5ct Emerald (Cabochon, Green, 13.34 x 8.89)
- 1ct Tourmaline (Cabochon, Dark Bluish Green, 7.46 x 4.97) vs. 1ct Hiddenite (Cabochon, Green, 7.38 x 4.92)
- 1ct Tourmaline (Cabochon, Violet, 7.46 x 4.97) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 22ct Tourmaline (Cabochon, Purple, 20.97 x 13.98) vs. 22ct Quartz (Cabochon, Brown, 21.99 x 14.66)
- 3.87ct Tourmaline (Cabochon, Violet, 11.7 x 7.8) vs. 2.87ct Tourmaline (Oval, Violet, 11.7 x 7.8)
- 4.98ct Tourmaline (Cabochon, Violet, 12.72 x 8.48) vs. 4.13ct Tourmaline (Cabochon, Violet, 11.96 x 7.97)
- 4.98ct Tourmaline (Cabochon, Violet, 12.72 x 8.48) vs. 4.13ct Ruby (Cabochon, Red, 10.98 x 7.32)