×
carat vs. color  length*  width*
  ×

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

28 Carat Diamond (Round, 19.74mm, White)

Color:
white
actual size
28ct Diamond displayed at actual size of 19.74×19.74mm, (Round cut, White
Actual size is set for screen


How big is a 28 carat round-cut Diamond?

It depends on the cut proportions, but typically a 28ct round-cut Diamond would measure around 19.74 mm (±3%) 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
White 28ct Diamond (round cut) shown in real-world size of 19.74×19.74mm 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
117 %
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2

Additional Info

Diamond is the hardest natural material (nothing can scratch it, but another diamond) and a very attractive and expensive gem. Diamonds can occur in a whole spectrum of colors, although white or colorless are the most popular.

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

Gem Details

Name:
Diamond
Shape:
Round
Chemical Formula:
C
Crystal Structure:
Isometric
Hardness:
10
Specific Gravity
3.52
Carat weight:
28 ct
Gram weight:
5.6 g (0.1975 ounces)
Points:
2800 pts
Length:
19.74 mm
Width:
19.74 mm
Average diameter:
19.74 mm
Est. face-up size:
306.04 mm²
Volume:
1590.91 mm³
Length-to-width ratio:
1
Refractive Index:
2.417 - 2.419
Luster:
Adamantine
Wearability:
Excellent
Care Instructions:
No special or unusual care
Color:
Diamond can be found in the following colors:
Color WhiteColor Light RedColor RedColor Dark RedColor Orangey RedColor 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:
Diamond is a birthstone for the month of April

Popular comparisons: