4 Ct Amethyst (Cushion) |
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4 Ct Tanzanite (Cushion) |
dark violet |
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10.18×10.18 mm | 9.46×9.46 mm | |
actual size | ||
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64 mm |
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Actual sizes of
4ct Amethyst Cushion (10.18×10.18mm, Dark Violet)
and
4ct Tanzanite Cushion (9.46×9.46mm, 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 Amethyst or Tanzanite check what Amazon has to offer. You'll usually find quite a selection from many different vendors. Worth a check. For other high quality gemstones (Rubies, Saphhires, Emeralds) and especially Diamonds, I highly recommend JamesAllen.
Face-up Size
All things being equal, Tanzanite will face-up smaller than Amethyst for a given
carat weight, because it has higher specific gravity
(3.3 vs. 2.65 - this means it's "heavier" compared to Amethyst 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 Amethyst (Cushion) | 4 Ct Tanzanite (Cushion) | |
10.18×10.18 mm | vs | 9.46×9.46 mm |
93.27 mm² | 80.54 mm² |
4ct Amethyst Cushion (10.18×10.18mm) | |
4ct Tanzanite Cushion (9.46×9.46mm) | |
Difference: 16% (12.73 mm²) |
4ct Amethyst Cushion (10.18×10.18mm) has approx. 16% more face-up area than 4ct Tanzanite Cushion (9.46×9.46mm).
Popular comparisons:
- 4ct Amethyst (Cushion, Dark Violet, 10.18 x 10.18) vs. 4ct Quartz (Round, Yellowish Green, 10.89 x 10.89)
- 2ct Amethyst (Cushion, Violet, 8 x 8) vs. 2ct Diamond (Cushion, White, 7.34 x 7.34)
- 1ct Amethyst (Cushion, Purple, 6.41 x 6.41) vs. 1ct Quartz (Round, Yellowish Green, 6.86 x 6.86)
- 1.35ct Amethyst (Cushion, Violet, 7.09 x 7.09) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 35ct Amethyst (Cushion, Violet, 20.98 x 20.98) vs. 1ct Ruby (Round, Red, 5.98 x 5.98)
- 26ct Amethyst (Cushion, Violet, 19 x 19) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Amethyst (Cushion, Violet, 6.41 x 6.41) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 24ct Amethyst (Cushion, Violet, 18.5 x 18.5) vs. 24ct Amethyst (Cushion, Violet, 18.5 x 18.5)
- 1ct Amethyst (Cushion, Purple, 6.41 x 6.41) vs. 1ct Quartz (Round, Violet, 6.86 x 6.86)
- 1ct Amethyst (Cushion, Violet, 6.41 x 6.41) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
Enter your screen size (diagonal)
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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.