CaratHunter
Plans
Cushion|Natural|GIA

0.81ct D SI1 Cushion Natural Diamond

D/SI1 • GIA 6551057591

Certificate GIA 6551057591

Diamond specifications and retailer prices

From €829 EUR
$926 USD
As of October 31, 2026
Save €816 EUR (50%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €1,645 EUR 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 €829 to €1,645, a €816 spread on the same certified stone. MOH London lists it at €1,645. 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

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

Price History

Last verified: Oct 31
Current: €1,645 EUR|Low: €732 EUR|High: €1,951 EUR|Avg: €1,330 EUR|-14.8%
MOH London
Retailer 2
Retailer 3
November 1, 2026
Retailer 3€829 EUR
Retailer 2€1,263 EUR
MOH London€1,645 EUR

24 data points across 3 retailers

3 retailers€829 EUR to €1,645 EUR

B+
Cheapest Retailer
-
€829 EUR
$926 USD
Final sale: no returns
B+
Retailer 2
-
€1,263 EUR
View
Most Expensive
B
MOH London
6CFAAD471 · Nov 1
€1,645 EUR
£1,447 GBP
View
2 more retailers have this diamond
Prices start from €829 EURSave up to €816 EUR

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
€829 EUR