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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

VG • D/SI1 • GIA 6167896378

Certificate GIA 6167896378

Diamond specifications and retailer prices

From £678 GBP
As of November 6, 2026
Save £424 GBP (38%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,101 GBP at GemTrove · As of November 6, 2026
View at GemTrove

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 6167896378. Listed at 8 retailers as of November 6, 2026, with prices from £678 to £1,101, a £424 spread on the same certified stone. GemTrove lists it at £1,101. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6167896378
Dimensions5.21 × 4.51 × 2.92 mm
L/W Ratio1.16
Top View
5.21 mm4.51 mm0.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6167896378
Side View
Table 65.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 64.7%

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: £1,101 GBP|Low: £677 GBP|High: £1,269 GBP|Avg: £932 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 20, 2026
Retailer 2£678 GBP
Retailer 5£776 GBP
Retailer 4£793 GBP
Retailer 3£808 GBP
Retailer 8£979 GBP
Retailer 9£979 GBP
Retailer 6£1,009 GBP
GemTrove£1,101 GBP
Retailer 7£1,269 GBP

2 data points across 9 retailers

8 retailers£678 GBP to £1,101 GBP

B+
Cheapest Retailer
-
£678 GBP
B
Retailer 2
-
£776 GBP
View
B
Retailer 3
-
£793 GBP
View
B
Retailer 4
-
£808 GBP
View
B
Retailer 5
-
£979 GBP
View
B
Retailer 6
-
£979 GBP
View
B
Retailer 7
-
£1,009 GBP
View
Most Expensive
B
GemTrove
GT-N-00950848-98 · Nov 6
£1,101 GBP
A$2,268 AUD
View
7 more retailers have this diamond
Prices start from £678 GBPSave up to £424 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
£678 GBP