Diamond Size Simulator
Explore diamond shapes and sizes
How big is a 1 carat diamond?... It's around 6.5mm... OK, but how big is 6.5mm exactly? And how would it look on my size 6 finger?
Welcome to Diamond Database where all of these questions and much much more will be answered. This website is a platform for comparing and learning about diamond shapes and sizes. It features a diamond ring simulator where you can compare actual diamond sizes on an actual sized ring and finger. It also provides tons of useful info including size evaluation and detailed buying guides.
Whether you are buying an engagement ring, are an aspiring gemologist, or just curious about diamonds, you've come to the right place. Now go ahead, start exploring different shapes below or jump straight into the size simulator.
Compare diamonds
Diamond Shapes
Round Brilliant
Designed for maximum sparkle, Round Brilliant is by far the most popular diamond cut. The ultimate classic...
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Princess Cut
Princess is a contemporary cut with square lines, sharp corners,
and high degree of brilliance...
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Radiant Cut
Radiant combines the brilliance and fire of the Round Brilliant
with an elegant look of the Emerald....
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Oval Cut
A fiery cut combining the sparkle of the Round Brilliant with an elongated, elliptical outline...
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Marquise Cut
A majestic, elongated cut with tapering points at both ends.
Very regal and quite striking...
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Heart Cut
As a symbol of love, Heart is the most explicitly romantic
of all diamond shapes. Gentle and affectionate...
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Emerald Cut
One of the classics of diamond shapes, Emeralds
are known for their elegance and exquisite beauty...
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Cushion Cut
A round-cornered, squarish-rectangular, pillow
resembling shape with strong romantic appeal...
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Asscher Cut
A squarish Asscher cut is a variation of the Emerald cut with almost octagonal
shape. Uniquely regal...
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Pear Cut
Resembling a teardrop, Pear cut is a unique, feminine shape
with one end tapering to a point...
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Trillion Cut
A dazzling and lively triangular shaped cut with sharp brilliance and fire.
Versatile and beautiful...
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Knowledge Base
Carat Weight vs. Face-Up Size
Evaluating Diamond Size
Where To Buy Diamonds?
Popular comparisons:
- 1ct Round (6.5x6.5x3.92) vs. 1.5ct Round (7.44x7.44x4.49)
- 1ct Round (6.5x6.5x3.92) vs. 1ct Princess (5.51x5.51x3.97)
- 0.8ct Round (6.03x6.03x3.64) vs. 1ct Round (6.5x6.5x3.92)
- 1.3ct Round (7.09x7.09x4.28) vs. 1.5ct Round (7.44x7.44x4.49)
- 0.4ct Round (4.79x4.79x2.89) vs. 0.5ct Round (5.16x5.16x3.11)
- 1.5ct Round (7.44x7.44x4.49) vs. 2ct Round (7.76x7.76x4.68)
- 0.75ct Round (5.91x5.91x3.56) vs. 1ct Round (6.5x6.5x3.92)
- 0.1ct Round (3.02x3.02x1.82) vs. 0.1ct Trillion (3.59x3.59x1.44)
- 1ct Oval (8.12x5.41x3.3) vs. 1.5ct Oval (9.29x6.19x3.78)
- 1ct Round (6.5x6.5x3.92) vs. 0.7ct Round (5.77x5.77x3.48)
- 1.5ct Oval (9.29x6.19x3.78) vs. 2ct Oval (10.23x6.82x4.16)
- 1ct Round (6.5x6.5x3.92) vs. 1ct Oval (8.12x5.41x3.3)
- 1ct Round (6.5x6.5x3.92) vs. 1.25ct Round (7x7x4.22)
- 2ct Round (8.19x8.19x4.94) vs. 1.9ct Round (7.9x7.9x4.8)
- 0.5ct Round (5.16x5.16x3.11) vs. 1ct Round (6.5x6.5x3.92)
- 1ct Emerald (6.68x4.95x3.22) vs. 2ct Emerald (8.42x6.24x4.06)
- 1.2ct Round (6.91x6.91x4.17) vs. 1.5ct Round (7.44x7.44x4.49)
- 2.5ct Round (8.82x8.82x5.32) vs. 3ct Round (9.37x9.37x5.65)