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1.4ct Topaz (Baguette, 8.09×5.39mm, Blue) vs 1ct Diamond (Marquise, 10.38×5.19mm, White)


Quick summary: When looked from above (face-up position), 1.4ct Topaz (8.09×5.39mm, baguette cut) appears 14% larger than 1ct Diamond (10.38×5.19mm, marquise cut). See below how they compare side-by-side on a ring and finger.

1.4ct Topaz (baguette cut)
vs
 1ct Diamond (marquise cut)
blue
 
white
8.09×5.39 mm 10.38×5.19 mm
actual size
Actual size of 1.4ct Topaz (baguette cut, 8.09×5.39mm, Blue color)   Actual size of 1ct Diamond (marquise cut, 10.38×5.19mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 1.4ct Topaz (baguette cut, 8.09×5.39mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 1ct Diamond (marquise cut, 10.38×5.19mm) 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
 32% vs 31%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.4ct Topaz Baguette (8.09×5.39mm, Blue) and 1ct Diamond Marquise (10.38×5.19mm, White) 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 slightly smaller than Diamond for a given carat weight, because it has higher specific gravity (3.53 vs. 3.52 - this means it's "slightly heavier" compared to Diamond 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.


1.4 Ct Topaz (Baguette) 1 Ct Diamond (Marquise)
8.09×5.39 mm vs 10.38×5.19 mm
43.61 mm²   38.25 mm²
Face-up size outline for 1.4ct Topaz (8.09×5.39mm, baguette cut)
Face-up size outline for 1ct Diamond (10.38×5.19mm, marquise cut)
1.4ct Topaz Baguette (8.09×5.39mm)
1ct Diamond Marquise (10.38×5.19mm)
Difference: 14% (5.36 mm²)
1.4ct Topaz (Baguette, 8.09×5.39mm) has approx. 14% more face-up area than 1ct Diamond (Marquise, 10.38×5.19mm).


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