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Cushion|Natural|GIA

1.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 2554124696

Certificate GIA 2554124696

Diamond specifications and retailer prices

From £2,381 GBP
As of November 6, 2026
Save £809 GBP (25%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,190 GBP at GemTrove · As of November 6, 2026
View at GemTrove

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two 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 2554124696. Listed at 5 retailers as of November 6, 2026, with prices from £2,381 to £3,190, a £809 spread on the same certified stone. GemTrove lists it at £3,190. 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

1.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2554124696
Dimensions6.27 × 6.24 × 4.32 mm
L/W Ratio1.00
Top View
6.27 mm6.24 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2554124696
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £2,381 GBP|Low: £2,381 GBP|High: £2,986 GBP|Avg: £2,652 GBP|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 1£2,381 GBP
Retailer 3£2,531 GBP
Retailer 5£2,619 GBP
Retailer 2£2,698 GBP
Retailer 4£2,729 GBP

45 data points across 5 retailers

5 retailers£2,381 GBP to £3,190 GBP

A
Cheapest Retailer
-
£2,381 GBP
Retailer 2
-
£2,531 GBP
View
Price last confirmed 21 days ago
Retailer 3
-
£2,698 GBP
View
Price last confirmed 20 days ago
Retailer 4
-
£2,729 GBP
View
Price last confirmed 21 days ago
Most Expensive
A
GemTrove
GT-N-00967759-98 · Nov 6
£3,190 GBP
A$6,568 AUD
View
4 more retailers have this diamond
Prices start from £2,381 GBPSave up to £809 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
1.51ct Cushion
£2,381 GBP