×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

3.25 Carat Ruby Emerald (9.46×7.01mm, Red)

Color:
red
actual size
3.25ct Ruby displayed at actual size of 9.46×7.01mm, (Emerald cut, Red
check price »
Actual size is set for screen
Ring:
Skin tone:
Ring width: 3.0 mm
Saved...
Finger image
Ring on finger
Red 3.25ct Ruby (emerald cut) shown in real-world size of 9.46×7.01mm on a ring and finger
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
 42 %
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2

Additional Info

Ruby is a red to pink variety of the mineral Corundum. Its name comes from the Latin word "ruber", which simply means "red". Most Rubies on the market are heat-treated to enhance their color and clarity.

Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Gem Details

Name:
Ruby
Mineral Group:
Corundum
Shape:
Emerald
Chemical Formula:
Al2O3
Crystal Structure:
Hexagonal
Hardness:
9
Specific Gravity
4
Carat weight:
3.25 ct
Gram weight:
0.65 g (0.0229 ounces)
Points:
325 pts
Length:
9.46 mm
Width:
7.01 mm
Est. face-up size:
61.67 mm²
Volume:
162.5 mm³
Length-to-width ratio:
1.35
Refractive Index:
1.76 - 1.77
Luster:
Vitreous to adamantine
Wearability:
Excellent
Care Instructions:
No special or unusual care
Color:
Ruby can be found in the following colors:
Color Light RedColor RedColor Dark Red
Birthstone:
Ruby is a birthstone for the month of July

Popular comparisons: