2.5ct Tourmaline (Marquise, 14.58×7.29mm, Violet) vs 2ct Diamond (Round, 8.19×8.19mm, White)
Quick summary: When looked from above (face-up position), 2.5ct Tourmaline (14.58×7.29mm, marquise cut) appears 43% larger than 2ct Diamond (8.19×8.19mm, round cut). See below how they compare side-by-side on a ring and finger.
| 2.5ct Tourmaline (marquise cut) |
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2ct Diamond (round cut) |
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violet |
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| 14.58×7.29 mm | 8.19×8.19 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
2.5ct Tourmaline Marquise (14.58×7.29mm, Violet)
and
2ct Diamond Round (8.19×8.19mm, 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, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Face-up Size
All things being equal, Diamond will face-up smaller than Tourmaline for a given
carat weight, because it has higher specific gravity
(3.52 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.
| 2.5 Ct Tourmaline (Marquise) | 2 Ct Diamond (Round) | |
| 14.58×7.29 mm | vs | 8.19×8.19 mm |
| 75.46 mm² | 52.68 mm² |
| 2.5ct Tourmaline Marquise (14.58×7.29mm) | |
| 2ct Diamond Round (8.19×8.19mm) | |
| Difference: 43% (22.78 mm²) |
2.5ct Tourmaline (Marquise, 14.58×7.29mm) has approx. 43% more face-up area than 2ct Diamond (Round, 8.19×8.19mm).
Popular comparisons:
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 2.5ct Sapphire (Marquise, Blue, 13.4 x 6.7)
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 2.5ct Diamond (Marquise, White, 14.1 x 7.05)
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 2ct Tourmaline (Marquise, Violet, 13.54 x 6.77)
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 5ct Tourmaline (Marquise, Violet, 18.38 x 9.19)
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 4ct Tourmaline (Marquise, Violet, 17.06 x 8.53)
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 3ct Tourmaline (Marquise, Violet, 15.5 x 7.75)
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 2.5ct Tourmaline (Princess, Violet, 7.94 x 7.94)
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 1.5ct Tourmaline (Marquise, Violet, 12.3 x 6.15)