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Cushion|Natural|GIA

0.81ct D SI1 Cushion Natural Diamond

D/SI1 • GIA 6551057591

Certificate GIA 6551057591

Diamond specifications and retailer prices

From £691 GBP
$926 USD
As of October 31, 2026
Save £680 GBP (50%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,372 GBP 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 £691 to £1,372, a £680 spread on the same certified stone. MOH London lists it at £1,372. 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
Colour
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

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,372 GBP|Low: £610 GBP|High: £1,626 GBP|Avg: £1,109 GBP|-14.8%
MOH London
Retailer 2
Retailer 3
November 1, 2026
Retailer 3£691 GBP
Retailer 2£1,053 GBP
MOH London£1,372 GBP

24 data points across 3 retailers

3 retailers£691 GBP to £1,372 GBP

B+
Cheapest Retailer
-
£691 GBP
$926 USD
Final sale: no returns
B+
Retailer 2
-
£1,053 GBP
€1,344 EUR
View
Most Expensive
B
MOH London
6CFAAD471 · Nov 1
£1,372 GBP
View
2 more retailers have this diamond
Prices start from £691 GBPSave up to £680 GBP

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
£691 GBP