9ct Spinel (Cushion, 11.93×11.93mm, Red) vs 9ct Alexandrite (Cushion, 11.79×11.79mm, Bluish Green)
Quick summary: When looked from above (face-up position), 9ct Spinel (11.93×11.93mm, cushion cut) appears 2% larger than 9ct Alexandrite (11.79×11.79mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 9ct Spinel (cushion cut) |
vs
|
9ct Alexandrite (cushion cut) |
|
red |
|
|
| 11.93×11.93 mm | 11.79×11.79 mm | |
| actual size | ||
|
|
|
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
9ct Spinel Cushion (11.93×11.93mm, Red)
and
9ct Alexandrite Cushion (11.79×11.79mm, Bluish Green)
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, Alexandrite will face-up smaller than Spinel for a given
carat weight, because it has higher specific gravity
(3.73 vs. 3.6 - this means it's "heavier" compared to Spinel 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.
| 9 Ct Spinel (Cushion) | 9 Ct Alexandrite (Cushion) | |
| 11.93×11.93 mm | vs | 11.79×11.79 mm |
| 128.09 mm² | 125.1 mm² |
| 9ct Spinel Cushion (11.93×11.93mm) | |
| 9ct Alexandrite Cushion (11.79×11.79mm) | |
| Difference: 2% (2.99 mm²) |
9ct Spinel (Cushion, 11.93×11.93mm) has approx. 2% more face-up area than 9ct Alexandrite (Cushion, 11.79×11.79mm).
Popular comparisons:
- 3ct Spinel (Cushion, Purple, 8 x 7) vs. 1.88ct Spinel (Oval, Violet, 6.44 x 8.92)
- 2.45ct Spinel (Cushion, Gray, 7.81 x 7.81) vs. 0.67ct Diamond (Round, White, 5.69 x 5.69)
- 6.05ct Spinel (Cushion, Violet, 11.07 x 11.04) vs. 6.05ct Sapphire (Cushion, Blue, 10.64 x 9.55)
- 4.33ct Spinel (Cushion, Dark Purple, 11.2 x 8.3) vs. 2.3ct Sapphire (Emerald, Blue, 8.42 x 6.24)
- 1ct Spinel (Cushion, Light Violet, 5.7 x 5.6) vs. 1.35ct Spinel (Cushion, Red, 6.8 x 6.8)
- 8.43ct Spinel (Cushion, Violet, 11.73 x 10.29) vs. 6.05ct Sapphire (Cushion, Blue, 10.64 x 9.55)
- 2.12ct Spinel (Cushion, Gray, 7.44 x 7.44) vs. 0.67ct Diamond (Round, White, 5.69 x 5.69)
- 3ct Spinel (Cushion, Red, 8 x 7) vs. 1.88ct Spinel (Oval, Red, 8.92 x 6.44)
- 6.05ct Spinel (Cushion, Violet, 11.07 x 11.04) vs. 4.99ct Sapphire (Round, Blue, 10.43 x 10.37)