4ct Tanzanite (Emerald, 10.81×8.01mm, Blue) vs 3ct Sapphire (Emerald, 9.21×6.82mm, Blue)
Quick summary: When looked from above (face-up position), 4ct Tanzanite (10.81×8.01mm, emerald cut) appears 38% larger than 3ct Sapphire (9.21×6.82mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 4ct Tanzanite (emerald cut) |
vs
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3ct Sapphire (emerald cut) |
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blue |
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| 10.81×8.01 mm | 9.21×6.82 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
4ct Tanzanite Emerald (10.81×8.01mm, Blue)
and
3ct Sapphire Emerald (9.21×6.82mm, 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, Sapphire will face-up smaller than Tanzanite for a given
carat weight, because it has higher specific gravity
(4 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.
| 4 Ct Tanzanite (Emerald) | 3 Ct Sapphire (Emerald) | |
| 10.81×8.01 mm | vs | 9.21×6.82 mm |
| 80.53 mm² | 58.42 mm² |
| 4ct Tanzanite Emerald (10.81×8.01mm) | |
| 3ct Sapphire Emerald (9.21×6.82mm) | |
| Difference: 38% (22.11 mm²) |
4ct Tanzanite (Emerald, 10.81×8.01mm) has approx. 38% more face-up area than 3ct Sapphire (Emerald, 9.21×6.82mm).
Popular comparisons:
- 4ct Tanzanite (Emerald, Blue, 10.81 x 8.01) vs. 4ct Sapphire (Emerald, Blue, 10.14 x 7.51)
- 4ct Tanzanite (Emerald, Blue, 10.81 x 8.01) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 4ct Tanzanite (Emerald, Blue, 10.81 x 8.01) vs. 4ct Diamond (Emerald, White, 10.61 x 7.86)
- 4ct Tanzanite (Emerald, Blue, 10.81 x 8.01) vs. 5ct Sapphire (Emerald, Blue, 10.92 x 8.09)
- 4ct Tanzanite (Emerald, Blue, 10.81 x 8.01) vs. 4ct Peridot (Emerald, Yellowish Green, 10.76 x 7.97)
- 4ct Tanzanite (Emerald, Blue, 10.81 x 8.01) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Tanzanite (Emerald, Blue, 8.57 x 6.35) vs. 3ct Tanzanite (Emerald, Blue, 9.81 x 7.27)
- 1ct Tanzanite (Emerald, Blue, 6.8 x 5.04) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)