1ct Spinel (Round, 6.19×6.19mm, Red) vs 1ct Tourmaline (Round, 6.54×6.54mm, Purple)
Quick summary: When looked from above (face-up position), 1ct Tourmaline (6.54×6.54mm, round cut) appears 12% larger than 1ct Spinel (6.19×6.19mm, round cut). See below how they compare side-by-side on a ring and finger.
| 1ct Spinel (round cut) |
vs
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1ct Tourmaline (round cut) |
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red |
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| 6.19×6.19 mm | 6.54×6.54 mm | |
| actual size | ||
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Actual size is set for screen
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Ring:
Skin tone:
Ring width: 3.0 mm
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64 mm |
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Actual sizes of
1ct Spinel Round (6.19×6.19mm, Red)
and
1ct Tourmaline Round (6.54×6.54mm, Purple)
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, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Face-up Size
All things being equal, Spinel will face-up smaller than Tourmaline for a given
carat weight, because it has higher specific gravity
(3.6 vs. 3.06 - this means it's "heavier" compared to Tourmaline 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.
| 1 Ct Spinel (Round) | 1 Ct Tourmaline (Round) | |
| 6.19×6.19 mm | vs | 6.54×6.54 mm |
| 30.09 mm² | 33.59 mm² |
| 1ct Spinel Round (6.19×6.19mm) | |
| 1ct Tourmaline Round (6.54×6.54mm) | |
| Difference: 12% (3.5 mm²) |
1ct Tourmaline (Round, 6.54×6.54mm) has approx. 12% more face-up area than 1ct Spinel (Round, 6.19×6.19mm).
Popular comparisons:
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 1ct Sapphire (Round, Blue, 5.98 x 5.98)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 4ct Emerald (Pear, Green, 15.02 x 9.05)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 0.67ct Diamond (Round, White, 5.69 x 5.69)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 1ct Spinel (Oval, Red, 7.83 x 5.22)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 2ct Topaz (Oval, Blue, 9.93 x 6.62)
Use the simulator on this page to play around with different ring and finger configurations.