3.33 Ct Quartz (Round) |
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4 Ct Diamond (Round) |
orangey red |
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10×10 mm | 10.32×10.32 mm | |
actual size | ||
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64 mm |
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Actual sizes of
3.33ct Quartz Round (10×10mm, Orangey Red)
and
4ct Diamond Round (10.32×10.32mm, White)
as they would appear on a ring and finger.
Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.
Where to buy?
JamesAllen → high-quality Diamonds, high-end jewelry and competitive prices. Highly recommended.
Amazon → usually offers a good selection from many different vendors. Worth a check.
Face-up Size
All things being equal, Diamond will face-up smaller than Quartz for a given
carat weight, because it has higher specific gravity
(3.52 vs. 2.65 - this means it's "heavier" compared to Quartz of the same size). Face-up size also depends heavily on the
proportions of the cut.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
3.33 Ct Quartz (Round) | 4 Ct Diamond (Round) | |
10×10 mm | vs | 10.32×10.32 mm |
78.54 mm² | 83.65 mm² |


3.33ct Quartz Round (10×10mm) | |
4ct Diamond Round (10.32×10.32mm) | |
Difference: 7% (5.11 mm²) |
4ct Diamond Round (10.32×10.32mm) has approx. 7% more face-up area than 3.33ct Quartz Round (10×10mm).
Popular comparisons:
- 1ct Quartz (Round, Orangey Red, 6.86 x 6.86) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Quartz (Round, Blue, 6.86 x 6.86) vs. 1ct Quartz (Round, Light Blue, 6.86 x 6.86)
- 6ct Quartz (Round, Light Orange, 12.46 x 12.46) vs. 3ct Citrine (Round, Light Orange, 9.89 x 9.89)
- 0.9ct Quartz (Round, Light Red, 6.5 x 6.5) vs. 1ct Quartz (Round, Light Red, 6.5 x 6.5)
- 2.6ct Quartz (Round, Gray, 9 x 9) vs. 2ct Quartz (Round, Gray, 8.3 x 8.3)
- 5ct Quartz (Round, Orangey Red, 11.73 x 11.73) vs. 5ct Amethyst (Round, Violet, 11.73 x 11.73)
- 1ct Quartz (Round, Orangey Red, 6.86 x 6.86) vs. 1ct Amethyst (Round, Violet, 6.86 x 6.86)
- 1.4ct Quartz (Round, Gray, 7.67 x 7.67) vs. 1.65ct Sapphire (Round, Light Blue, 7.06 x 7.06)
- 4ct Quartz (Round, Orangey Red, 10 x 10) vs. 1ct Diamond (Round, White, 7 x 7)
Enter your screen size (diagonal)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.