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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6512554775

Certificate GIA 6512554775

Diamond specifications and retailer prices

From £300 GBP
As of November 6, 2026
Save £507 GBP (63%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £807 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6512554775. Listed at 6 retailers as of November 6, 2026, with prices from £300 to £807, a £507 spread on the same certified stone. Do Amore Diamonds lists it at £807. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6512554775
Dimensions4.62 × 4.36 × 2.94 mm
L/W Ratio1.06
Top View
4.62 mm4.36 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6512554775
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.4%

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: £807 GBP|Low: £261 GBP|High: £889 GBP|Avg: £443 GBP|-9.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3£300 GBP
Retailer 6£321 GBP
Retailer 5£353 GBP
Retailer 4£360 GBP
Retailer 2£410 GBP
Retailer 8£456 GBP
Retailer 9£456 GBP
Retailer 7£471 GBP
Do Amore Diamonds£807 GBP

41 data points across 9 retailers

6 retailers£300 GBP to £807 GBP

A
Cheapest Retailer
-
£300 GBP
Final sale: no returns
A
Retailer 2
-
£321 GBP
View
A
Retailer 3
-
£353 GBP
View
A
Retailer 4
-
£360 GBP
View
A
Retailer 5
-
£410 GBP
View
Most Expensive
B
Do Amore Diamonds
12-100761125698 · Nov 6
£807 GBP
$1,080 USD
View
5 more retailers have this diamond
Prices start from £300 GBPSave up to £507 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
£300 GBP