×
carat vs. color  length*  width*
  ×

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

5.55ct Hiddenite (Round, 11.43×11.43mm, Light Green ) vs 4.45ct Topaz (Round, 10.25×10.25mm, Orangey Red)


Quick summary: When looked from above (face-up position), 5.55ct Hiddenite (11.43×11.43mm, round cut) appears 24% larger than 4.45ct Topaz (10.25×10.25mm, round cut). See below how they compare side-by-side on a ring and finger.

5.55ct Hiddenite (round cut)
vs
 4.45ct Topaz (round cut)
light green
 
orangey red
11.43×11.43 mm 10.25×10.25 mm
actual size
Actual size of 5.55ct Hiddenite (round cut, 11.43×11.43mm, Light Green color)   Actual size of 4.45ct Topaz (round cut, 10.25×10.25mm, Orangey Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Green 5.55ct Hiddenite (round cut, 11.43×11.43mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orangey Red 4.45ct Topaz (round cut, 10.25×10.25mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 68% vs 61%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 5.55ct Hiddenite Round (11.43×11.43mm, Light Green ) and 4.45ct Topaz Round (10.25×10.25mm, Orangey Red) 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, Topaz will face-up smaller than Hiddenite for a given carat weight, because it has higher specific gravity (3.53 vs. 3.18 - this means it's "heavier" compared to Hiddenite 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.


5.55 Ct Hiddenite (Round) 4.45 Ct Topaz (Round)
11.43×11.43 mm vs 10.25×10.25 mm
102.61 mm²   82.52 mm²
Face-up size outline for 5.55ct Hiddenite (11.43×11.43mm, round cut)
Face-up size outline for 4.45ct Topaz (10.25×10.25mm, round cut)
5.55ct Hiddenite Round (11.43×11.43mm)
4.45ct Topaz Round (10.25×10.25mm)
Difference: 24% (20.09 mm²)
5.55ct Hiddenite (Round, 11.43×11.43mm) has approx. 24% more face-up area than 4.45ct Topaz (Round, 10.25×10.25mm).


Popular comparisons: