2ct Tanzanite (Round, 7.99×7.99mm, Blue) vs 2ct Topaz (Round, 7.85×7.85mm, Blue)
Quick summary: When looked from above (face-up position), 2ct Tanzanite (7.99×7.99mm, round cut) appears 4% larger than 2ct Topaz (7.85×7.85mm, round cut). See below how they compare side-by-side on a ring and finger.
| 2ct Tanzanite (round cut) |
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2ct Topaz (round cut) |
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blue |
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| 7.99×7.99 mm | 7.85×7.85 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
2ct Tanzanite Round (7.99×7.99mm, Blue)
and
2ct Topaz Round (7.85×7.85mm, Blue)
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, Topaz will face-up smaller than Tanzanite for a given
carat weight, because it has higher specific gravity
(3.53 vs. 3.35 - this means it's "heavier" compared to Tanzanite 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 Ct Tanzanite (Round) | 2 Ct Topaz (Round) | |
| 7.99×7.99 mm | vs | 7.85×7.85 mm |
| 50.14 mm² | 48.4 mm² |
| 2ct Tanzanite Round (7.99×7.99mm) | |
| 2ct Topaz Round (7.85×7.85mm) | |
| Difference: 4% (1.74 mm²) |
2ct Tanzanite (Round, 7.99×7.99mm) has approx. 4% more face-up area than 2ct Topaz (Round, 7.85×7.85mm).
Popular comparisons:
- 2ct Tanzanite (Round, Blue, 7.99 x 7.99) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Alexandrite (Round, Light Green , 6.14 x 6.14)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Tanzanite (Round, Dark Blue, 8.03 x 8.03) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 10ct Tanzanite (Round, Blue, 13.73 x 13.73) vs. 10ct Diamond (Round, White, 14 x 14)
- 1.5ct Tanzanite (Round, Blue, 7.3 x 7.3) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Round, Green, 6.37 x 6.37)