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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 2547687481

Certificate GIA 2547687481

Diamond specifications and retailer prices

From £1,701 GBP
As of November 5, 2026
Save £551 GBP (24%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,161 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2547687481. Listed at 7 retailers as of October 31, 2026, with a 32% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2547687481
Dimensions6.77 × 6.02 × 4.20 mm
L/W Ratio1.12
Top View
6.77 mm6.02 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547687481
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £1,701 GBP|Low: £1,692 GBP|High: £3,512 GBP|Avg: £2,334 GBP|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 5, 2026
Retailer 1£1,701 GBP
Retailer 5£1,806 GBP
Retailer 2£1,969 GBP
Retailer 4£2,002 GBP
Retailer 8£2,132 GBP
Retailer 6£2,250 GBP
Retailer 3£2,253 GBP
Retailer 9£2,719 GBP
Retailer 7£2,961 GBP
Wholesale Diamonds Direct£3,161 GBP

37 data points across 10 retailers

7 retailers£1,701 GBP to £2,253 GBP

A
Cheapest Retailer
-
£1,701 GBP
A
Retailer 2
-
£1,806 GBP
View
A
Retailer 3
-
£1,969 GBP
View
A
Retailer 4
-
£2,002 GBP
View
A
Retailer 5
-
£2,250 GBP
View
A
Retailer 6
-
£2,253 GBP
View
Most Expensive
Wholesale Diamonds Direct
503047354 · Oct 27
£3,161 GBP
$4,230 USD
View
Price last confirmed 11 days ago
6 more retailers have this diamond
Prices start from £1,701 GBPSave up to £551 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
£1,701 GBP