carat vs. color  length*  width*

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

1.89 Ct Zircon (Round)


1.07 Ct Peridot (Round)

light red
yellowish green
6.49×6.49 mm 6.49×6.49 mm
actual size
Actual size of 1.89ct Zircon   Actual size of 1.07ct Peridot
Actual size is set for screen Change
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Red 1.89ct Zircon on a ring
64 mm
Right finger image
Ring on a right finger
Yellowish Green 1.07ct 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 1.89ct Zircon Round (6.49×6.49mm, Light Red) and 1.07ct Peridot Round (6.49×6.49mm, 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?

For Zircon or Peridot 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, Zircon will face-up smaller than Peridot for a given carat weight, because it has higher specific gravity (4.65 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.

1.89 Ct Zircon (Round) 1.07 Ct Peridot (Round)
6.49×6.49 mm vs 6.49×6.49 mm
33.08 mm²   33.08 mm²
Face-up size outline
1.89ct Zircon Round (6.49×6.49mm)
1.07ct Peridot Round (6.49×6.49mm)
Difference: 0% (0 mm²)
1.89ct Zircon Round (6.49×6.49mm) and 1.07ct Peridot Round (6.49×6.49mm) have the same face-up area.

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.