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Cushion|Natural|GIA

1.51ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 6555010552

Certificate GIA 6555010552

Diamond specifications and retailer prices

From £2,063 GBP
HK$21,600 HKD
As of November 1, 2026
Save £1,182 GBP (36%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,661 GBP at MOH London · As of October 21, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555010552. Listed at 14 retailers as of October 31, 2026, with a 57% 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555010552
Dimensions7.62 × 6.09 × 4.17 mm
L/W Ratio1.25
Top View
7.62 mm6.09 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555010552
Side View
Table 68.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.5%

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 1
Current: £4,661 GBP|Low: £2,063 GBP|High: £4,920 GBP|Avg: £2,881 GBP|-5.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 7£2,063 GBP
Retailer 2£2,103 GBP
Retailer 11£2,225 GBP
Retailer 13£2,302 GBP
Retailer 14£2,314 GBP
Retailer 4£2,466 GBP
Retailer 8£2,503 GBP
Retailer 9£2,578 GBP
Retailer 5£2,642 GBP
Retailer 10£2,781 GBP
Retailer 6£2,886 GBP
Retailer 12£3,246 GBP
Retailer 3£4,480 GBP
MOH London£4,661 GBP

27 data points across 14 retailers

14 retailers£2,063 GBP to £3,246 GBP

A
Cheapest Retailer
-
£2,063 GBP
HK$21,600 HKD
A
Retailer 2
-
£2,103 GBP
$2,818 USD
View
A
Retailer 3
-
£2,225 GBP
$2,981 USD
View
Final sale: no returns
A
Retailer 4
-
£2,302 GBP
$3,085 USD
View
A
Retailer 5
-
£2,314 GBP
$3,101 USD
View
A
Retailer 6
-
£2,466 GBP
$3,304 USD
View
A
Retailer 7
-
£2,503 GBP
$3,353 USD
View
A
Retailer 8
-
£2,578 GBP
View
A
Retailer 9
-
£2,642 GBP
$3,540 USD
View
A
Retailer 10
-
£2,781 GBP
View
A
Retailer 11
-
£3,138 GBP
A$6,468 AUD
View
A
Retailer 12
-
£3,246 GBP
€4,142 EUR
View
Retailer 13
-
£4,480 GBP
$6,003 USD
View
Price last confirmed 9 days ago
Most Expensive
MOH London
01783FD08 · Oct 21
£4,661 GBP
View
Price last confirmed 12 days ago
13 more retailers have this diamond
Prices start from £2,063 GBPSave up to £1,182 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
£2,063 GBP