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Cushion · Old Mine|Natural|GIA

0.51ct K VS1 Cushion Natural Diamond

GD • K/VS1 • GIA 6552957404

Certificate GIA 6552957404

Diamond specifications and retailer prices

From £366 GBP
As of November 6, 2026
Save £846 GBP (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,438 GBP at MOH London · As of November 2, 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 K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6552957404. Listed at 10 retailers as of November 5, 2026, with a 231% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
VS1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552957404
Dimensions5.80 × 4.25 × 2.68 mm
L/W Ratio1.36
Culet sizeVery Large
Top View
5.80 mm4.25 mm0.51 ctK / VS1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6552957404
Side View
Table 58.0%CrownGirdle: MED-VTKPavilionCulet: Very LargeDepth 62.9%

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: Nov 6
Current: £1,438 GBP|Low: £366 GBP|High: £1,438 GBP|Avg: £830 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 10£366 GBP
Retailer 6£785 GBP
Retailer 7£861 GBP
Retailer 5£889 GBP
Retailer 8£906 GBP
Retailer 9£906 GBP
Retailer 4£926 GBP
Retailer 3£1,101 GBP
Retailer 2£1,212 GBP
MOH London£1,438 GBP

6 data points across 10 retailers

10 retailers£366 GBP to £1,212 GBP

B+
Cheapest Retailer
-
£366 GBP
C
Retailer 2
-
£785 GBP
View
C
Retailer 3
-
£861 GBP
View
C
Retailer 4
-
£889 GBP
View
C
Retailer 5
-
£906 GBP
View
C
Retailer 6
-
£906 GBP
View
C
Retailer 7
-
£926 GBP
View
C
Retailer 8
-
£1,101 GBP
View
C
Retailer 9
-
£1,212 GBP
View
Most Expensive
MOH London
0AADB3838 · Nov 2
£1,438 GBP
View
Price under review
9 more retailers have this diamond
Prices start from £366 GBPSave up to £846 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+
0.51ct Cushion
£366 GBP