3.7 Ct Spinel (Round) |
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1 Ct Diamond (Round) |
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red |
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| 9.58×9.58 mm | 6.5×6.5 mm | |
| actual size | ||
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Actual size is set for screen
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Ring width: 3.0 mm
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64 mm |
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Actual sizes of
3.7ct Spinel Round (9.58×9.58mm, Red)
and
1ct Diamond Round (6.5×6.5mm, 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?
For certified gemstones and high-end gemstone jewelry, look at:
James Allen → quality gemstones (Rubies, Sapphires, Emeralds) and especially Diamonds
Blue Nile → gemstones and diamonds, birthstones jewelry
Brian Gavin → nice selection of gemstones, top-end signature diamonds
Face-up Size
All things being equal, Spinel will face-up slightly smaller than Diamond for a given
carat weight, because it has higher specific gravity
(3.6 vs. 3.52 - this means it's "slightly heavier" compared to Diamond 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.
| 3.7 Ct Spinel (Round) | 1 Ct Diamond (Round) | |
| 9.58×9.58 mm | vs | 6.5×6.5 mm |
| 72.08 mm² | 33.18 mm² |
| 3.7ct Spinel Round (9.58×9.58mm) | |
| 1ct Diamond Round (6.5×6.5mm) | |
| Difference: 117% (38.9 mm²) |
3.7ct Spinel Round (9.58×9.58mm) has approx. 117% more face-up area than 1ct Diamond Round (6.5×6.5mm).
Popular comparisons:
- 3.7ct Spinel (Round, Red, 9.58 x 9.58) vs. 0.67ct Diamond (Round, White, 5.69 x 5.69)
- 3.7ct Spinel (Round, Red, 9.58 x 9.58) vs. 0.4ct Diamond (Round, White, 4.79 x 4.79)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1.35ct Spinel (Round, Red, 6.84 x 6.84) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 5ct Spinel (Round, Red, 10.59 x 10.59) vs. 5ct Alexandrite (Round, Light Green , 10.49 x 10.49)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.4ct Spinel (Round, Red, 4.56 x 4.56) vs. 0.07ct Diamond (Round, White, 2.68 x 2.68)
- 0.31ct Spinel (Round, Red, 4.19 x 4.19) vs. 0.07ct Diamond (Round, White, 2.68 x 2.68)
Enter your screen size (diagonal)
My screen size is
inches
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.