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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

VG • D/SI1 • GIA 2547920500

Certificate GIA 2547920500

Diamond specifications and retailer prices

From £456 GBP
As of November 6, 2026
Save £528 GBP (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £984 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2547920500. Listed at 11 retailers as of November 4, 2026, with prices from £456 to £984, a £528 spread on the same certified stone. MOH London lists it at £984. 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

0.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle36.1°
OriginNatural
Grading LabGIA
CertificateGIA 2547920500
Dimensions5.86 × 4.16 × 2.78 mm
L/W Ratio1.41
Top View
5.86 mm4.16 mm0.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547920500
Side View
Table 63.0%Crown 33.1°Girdle: THN-THKPavilion 36.1°Culet: NoneDepth 66.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £984 GBP|Low: £456 GBP|High: £1,064 GBP|Avg: £695 GBP|-6.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£456 GBP
Retailer 10£496 GBP
Retailer 6£538 GBP
Retailer 8£637 GBP
Retailer 2£638 GBP
Retailer 7£672 GBP
Retailer 5£673 GBP
Retailer 11£727 GBP
Retailer 3£827 GBP
Retailer 4£829 GBP
MOH London£984 GBP

44 data points across 11 retailers

11 retailers£456 GBP to £984 GBP

A
Cheapest Retailer
-
£456 GBP
B+
Retailer 2
-
£496 GBP
View
Final sale: no returns
Retailer 3
-
£538 GBP
View
Price last confirmed 13 days ago
B+
Retailer 4
-
£637 GBP
View
B+
Retailer 5
-
£638 GBP
View
B
Retailer 6
-
£672 GBP
View
B+
Retailer 7
-
£673 GBP
View
B
Retailer 8
-
£727 GBP
View
Retailer 9
-
£827 GBP
View
Price last confirmed 34 days ago
B
Retailer 10
-
£829 GBP
View
Most Expensive
B
MOH London
89C57A713 · Nov 4
£984 GBP
View
10 more retailers have this diamond
Prices start from £456 GBPSave up to £528 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.

A
0.51ct Cushion
£456 GBP