6.5ct Alexandrite (Marquise, 18.58×9.29mm, Bluish Green) vs 6.5ct Sapphire (Marquise, 18.14×9.07mm, Blue)
Quick summary: When looked from above (face-up position), 6.5ct Alexandrite (18.58×9.29mm, marquise cut) appears 5% larger than 6.5ct Sapphire (18.14×9.07mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 6.5ct Alexandrite (marquise cut) |
vs
|
6.5ct Sapphire (marquise cut) |
|
bluish green |
|
|
| 18.58×9.29 mm | 18.14×9.07 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
6.5ct Alexandrite Marquise (18.58×9.29mm, Bluish Green)
and
6.5ct Sapphire Marquise (18.14×9.07mm, 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 Alexandrite for a given
carat weight, because it has higher specific gravity
(4 vs. 3.73 - this means it's "heavier" compared to Alexandrite 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.
| 6.5 Ct Alexandrite (Marquise) | 6.5 Ct Sapphire (Marquise) | |
| 18.58×9.29 mm | vs | 18.14×9.07 mm |
| 122.55 mm² | 116.82 mm² |
| 6.5ct Alexandrite Marquise (18.58×9.29mm) | |
| 6.5ct Sapphire Marquise (18.14×9.07mm) | |
| Difference: 5% (5.73 mm²) |
6.5ct Alexandrite (Marquise, 18.58×9.29mm) has approx. 5% more face-up area than 6.5ct Sapphire (Marquise, 18.14×9.07mm).
Popular comparisons:
- 1ct Alexandrite (Marquise, Bluish Green, 10 x 5) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Alexandrite (Marquise, Bluish Green, 10.12 x 5.06) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 7ct Alexandrite (Marquise, Bluish Green, 19.38 x 9.69) vs. 2ct Alexandrite (Marquise, Bluish Green, 12.76 x 6.38)
- 1.5ct Alexandrite (Marquise, Bluish Green, 11.6 x 5.8) vs. 2ct Alexandrite (Marquise, Bluish Green, 12.76 x 6.38)
- 1ct Alexandrite (Marquise, Bluish Green, 10 x 5) vs. 1ct Alexandrite (Oval, Bluish Green, 8 x 6)
- 1ct Alexandrite (Marquise, Dark Bluish Green, 9.3 x 4.6) vs. 1ct Diamond (Marquise, White, 10.38 x 5.19)
- 0.24ct Alexandrite (Marquise, Bluish Green, 6.23 x 2.78) vs. 0.68ct Alexandrite (Oval, Bluish Green, 6.7 x 4.2)
- 0.75ct Alexandrite (Marquise, Purple, 9.2 x 4.6) vs. 2.5ct Diamond (Oval, White, 11.01 x 7.34)
- 1ct Alexandrite (Marquise, Bluish Green, 10 x 5) vs. 1ct Diamond (Marquise, White, 10.38 x 5.19)