Cushion|Natural|GIA

0.81ct D SI1 Cushion Natural Diamond

D/SI1 • GIA 6551057591

Certificate GIA 6551057591

Diamond specifications and retailer prices

From $926 USD
As of October 31, 2026
Save $912 USD (50%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,838 USD at MOH London · As of November 1, 2026
View at MOH London

About this 0.81ct natural cushion diamond

This 0.81ct natural cushion sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included) and certified by GIA 6551057591. Listed at 3 retailers as of October 31, 2026, with prices from $926 to $1,838, a $912 spread on the same certified stone. MOH London lists it at $1,838. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.81
Carat
D
Color
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551057591
Dimensions5.45 × 5.25 × 3.57 mm
L/W Ratio1.04
Top View
5.45 mm5.25 mm0.81 ctD / SI1
OriginNatural
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 6551057591
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: $1,838 USD|Low: $818 USD|High: $2,179 USD|Avg: $1,486 USD|-14.8%
MOH London
Retailer 2
Retailer 3
November 1, 2026
Retailer 3$926 USD
Retailer 2$1,411 USD
MOH London$1,838 USD

24 data points across 3 retailers

3 retailers$926 USD to $1,838 USD

B+
Cheapest Retailer
-
$926 USD
Final sale: no returns
B+
Retailer 2
-
$1,411 USD
€1,344 EUR
View
Most Expensive
B
MOH London
6CFAAD471 · Nov 1
$1,838 USD
£1,447 GBP
View
2 more retailers have this diamond
Prices start from $926 USDSave up to $912 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.81ct Cushion
$926 USD