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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1525126298

Certificate GIA 1525126298

Diamond specifications and retailer prices

From £304 GBP
As of November 6, 2026
Save £518 GBP (63%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £822 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 1525126298. Listed at 5 retailers as of November 6, 2026, with prices from £304 to £822, a £518 spread on the same certified stone. Do Amore Diamonds lists it at £822. 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 1525126298
Dimensions4.71 × 4.26 × 2.89 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Crystal
Top View
4.71 mm4.26 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1525126298
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.8%

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: £822 GBP|Low: £267 GBP|High: £911 GBP|Avg: £436 GBP|-9.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3£304 GBP
Retailer 5£326 GBP
Retailer 6£347 GBP
Retailer 4£359 GBP
Retailer 2£417 GBP
Do Amore Diamonds£822 GBP

40 data points across 6 retailers

5 retailers£304 GBP to £822 GBP

A
Cheapest Retailer
-
£304 GBP
Final sale: no returns
A
Retailer 2
-
£326 GBP
View
A
Retailer 3
-
£359 GBP
View
A
Retailer 4
-
£417 GBP
View
Most Expensive
B
Do Amore Diamonds
12-100761265675 · Nov 6
£822 GBP
$1,100 USD
View
4 more retailers have this diamond
Prices start from £304 GBPSave up to £518 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
£304 GBP