carat vs. color  length*  width*

(or examine a single gem)
* size in mm (optional)

1 Ct Sapphire (Baguette)


1 Ct Peridot (Cushion)

yellowish green
6.93×4.62 mm 5.93×5.93 mm
actual size
Actual size of 1ct Sapphire   Actual size of 1ct Peridot
Actual size is set for screen Change
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 1ct Sapphire on a ring
64 mm
Right finger image
Ring on a right finger
Yellowish Green 1ct Peridot on a ring
Your settings
Skin tone
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
Ring diameter: 16.9 mm
Actual sizes of 1ct Sapphire Baguette (6.93×4.62mm, Blue) and 1ct Peridot Cushion (5.93×5.93mm, Yellowish 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?

JamesAllen → high-quality blue Sapphires, high-end jewelry and competitive prices. Highly recommended.
Amazon → usually offers a good selection from many different vendors. Worth a check.

Face-up Size

All things being equal, Sapphire will face-up smaller than Peridot for a given carat weight, because it has higher specific gravity (4 vs. 3.35 - this means it's "heavier" compared to Peridot 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.

1 Ct Sapphire (Baguette) 1 Ct Peridot (Cushion)
6.93×4.62 mm vs 5.93×5.93 mm
32.02 mm²   31.65 mm²
Face-up size outline
Face-up size outline
1ct Sapphire Baguette (6.93×4.62mm)
1ct Peridot Cushion (5.93×5.93mm)
Difference: 1% (0.37 mm²)
1ct Sapphire Baguette (6.93×4.62mm) has approx. 1% more face-up area than 1ct Peridot Cushion (5.93×5.93mm).

Popular comparisons:

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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.