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Cushion|Natural|GIA

1.51ct K SI2 Cushion Natural Diamond

EX • K/SI2 • GIA 2566006105

Certificate GIA 2566006105

Diamond specifications and retailer prices

From £1,357 GBP
As of November 6, 2026
Save £1,855 GBP (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,213 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566006105. Listed at 7 retailers as of November 4, 2026, with prices from £1,357 to £3,213, a £1,855 spread on the same certified stone. MOH London lists it at £3,213. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566006105
Dimensions7.52 × 5.93 × 4.11 mm
L/W Ratio1.27
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.52 mm5.93 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566006105
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 69.3%

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: £3,213 GBP|Low: £1,339 GBP|High: £3,260 GBP|Avg: £2,013 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6£1,357 GBP
Retailer 7£1,698 GBP
Retailer 3£1,832 GBP
Retailer 5£1,881 GBP
Retailer 2£1,899 GBP
Retailer 4£2,347 GBP
MOH London£3,213 GBP

32 data points across 7 retailers

7 retailers£1,357 GBP to £3,213 GBP

A
Cheapest Retailer
-
£1,357 GBP
B+
Retailer 2
-
£1,698 GBP
View
A
Retailer 3
-
£1,832 GBP
View
B+
Retailer 4
-
£1,881 GBP
View
B+
Retailer 5
-
£1,899 GBP
View
B+
Retailer 6
-
£2,347 GBP
View
Most Expensive
B
MOH London
051E64C1E · Nov 4
£3,213 GBP
View
6 more retailers have this diamond
Prices start from £1,357 GBPSave up to £1,855 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
£1,357 GBP