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Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 7556576837

Certificate GIA 7556576837

Diamond specifications and retailer prices

From £2,228 GBP
As of November 6, 2026
Save £2,810 GBP (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £5,038 GBP at MOH London · As of November 2, 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 H 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 7556576837. Listed at 10 retailers as of November 2, 2026, with prices from £2,228 to £5,038, a £2,810 spread on the same certified stone. MOH London lists it at £5,038. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.76°
OriginNatural
Grading LabGIA
CertificateGIA 7556576837
Dimensions7.50 × 5.88 × 4.11 mm
L/W Ratio1.28
Key to symbols
Crystal, Cloud, Feather
Top View
7.50 mm5.88 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556576837
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 35.76°Culet: NoneDepth 69.8%

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 6
Current: £5,038 GBP|Low: £2,228 GBP|High: £5,334 GBP|Avg: £3,234 GBP|-4.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6£2,228 GBP
Retailer 5£2,624 GBP
Retailer 8£2,728 GBP
Retailer 4£2,808 GBP
Retailer 2£2,823 GBP
Retailer 9£3,126 GBP
Retailer 7£3,225 GBP
Retailer 3£3,508 GBP
MOH London£5,038 GBP

34 data points across 9 retailers

10 retailers£2,228 GBP to £5,038 GBP

A
Cheapest Retailer
-
£2,228 GBP
A
Retailer 2
-
£2,624 GBP
View
A
Retailer 3
-
£2,728 GBP
View
A
Retailer 4
-
£2,808 GBP
View
A
Retailer 5
-
£2,823 GBP
View
A
Retailer 6
-
£3,126 GBP
View
Final sale: no returns
A
Retailer 7
-
£3,225 GBP
View
B+
Retailer 8
-
£3,413 GBP
View
A
Retailer 9
-
£3,508 GBP
View
Most Expensive
B+
MOH London
43437E97D · Nov 2
£5,038 GBP
View
9 more retailers have this diamond
Prices start from £2,228 GBPSave up to £2,810 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
£2,228 GBP