carat vs. color  length*  width*

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

1 Ct Sapphire (Baguette)


2 Ct Emerald (Emerald)

6.93×4.62 mm 9.17×6.79 mm
actual size
Actual size of 1ct Sapphire   Actual size of 2ct Emerald
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
Green 2ct Emerald 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 2ct Emerald Emerald (9.17×6.79mm, 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 gemstones (Rubies, Saphhires, Emeralds) and especially Diamonds, 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 Emerald for a given carat weight, because it has higher specific gravity (4 vs. 2.7 - this means it's "heavier" compared to Emerald 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) 2 Ct Emerald (Emerald)
6.93×4.62 mm vs 9.17×6.79 mm
32.02 mm²   57.91 mm²
Face-up size outline
Face-up size outline
1ct Sapphire Baguette (6.93×4.62mm)
2ct Emerald Emerald (9.17×6.79mm)
Difference: 81% (25.89 mm²)
2ct Emerald Emerald (9.17×6.79mm) has approx. 81% more face-up area than 1ct Sapphire Baguette (6.93×4.62mm).

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.