×
carat vs. color  length*  width*
  ×

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

3.5 Carat Sapphire (Round, 9.08mm, Blue)

Color:
blue
actual size
3.5ct Sapphire displayed at actual size of 9.08×9.08mm, (Round cut, Blue
check price »
Actual size is set for screen


How big is a 3.5 carat round-cut Sapphire?

It depends on the cut proportions, but typically a 3.5ct round-cut Sapphire would measure around 9.08 mm (±4%) in diameter. You can check the finger coverage in the simulator below. 
Ring:
Skin tone:
Ring width: 3.0 mm
Saved...
Finger image
Ring on finger
Blue 3.5ct Sapphire (round cut) shown in real-world size of 9.08×9.08mm 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
 54 %
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2

Additional Info

Sapphire got its name from the Greek word "sappheiros", which means "blue stone". Today, most people still associate Sapphires with the color blue, however, any gemstone quality Corundum that is not red (Ruby) is actually called Sapphire.

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

Gem Details

Name:
Sapphire
Mineral Group:
Corundum
Shape:
Round
Chemical Formula:
Al2O3
Crystal Structure:
Hexagonal
Hardness:
9
Specific Gravity
4
Carat weight:
3.5 ct
Gram weight:
0.7 g (0.0247 ounces)
Points:
350 pts
Length:
9.08 mm
Width:
9.08 mm
Average diameter:
9.08 mm
Est. face-up size:
64.75 mm²
Volume:
175 mm³
Length-to-width ratio:
1
Refractive Index:
1.76 - 1.77
Luster:
Vitreous to adamantine
Wearability:
Excellent
Care Instructions:
No special or unusual care
Color:
Sapphire can be found in the following colors:
Color WhiteColor Light OrangeColor OrangeColor Light BrownColor BrownColor Dark BrownColor Light YellowColor YellowColor Light Yellowish GreenColor Yellowish GreenColor Dark Yellowish GreenColor Light Green Color GreenColor Dark GreenColor Light Bluish GreenColor Bluish GreenColor Dark Bluish GreenColor Light BlueColor BlueColor Dark BlueColor Light VioletColor VioletColor Dark VioletColor Light PurpleColor PurpleColor Dark PurpleColor Light GrayColor GrayColor Black
Birthstone:
Sapphire is a birthstone for the month of September

Popular comparisons: