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Cushion|Natural|GIA

1.51ct J SI2 Cushion Natural Diamond

EX • J/SI2 • GIA 2231947275

Certificate GIA 2231947275

Diamond specifications and retailer prices

From £1,420 GBP
$1,903 USD
As of October 30, 2026
Save £1,624 GBP (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,044 GBP at MOH London · As of November 1, 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 J 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 2231947275. Listed at 15 retailers as of October 30, 2026, with prices from £1,420 to £3,044, a £1,624 spread on the same certified stone. MOH London lists it at £3,044. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Pavilion angle36.21°
OriginNatural
Grading LabGIA
CertificateGIA 2231947275
Dimensions6.71 × 6.24 × 4.27 mm
L/W Ratio1.08
Key to symbols
Crystal, Feather, Needle
Top View
6.71 mm6.24 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2231947275
Side View
Table 59.0%CrownGirdle: STK-VTKPavilion 36.21°Culet: 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: Oct 30
Current: £3,044 GBP|Low: £955 GBP|High: £3,061 GBP|Avg: £1,622 GBP|+31.3%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 7£955 GBP
Retailer 8£1,336 GBP
Retailer 3£1,420 GBP
Retailer 18£1,423 GBP
Retailer 16£1,435 GBP
Retailer 14£1,452 GBP
Retailer 12£1,452 GBP
Retailer 5£1,469 GBP
Retailer 17£1,482 GBP
Retailer 13£1,519 GBP
Retailer 4£1,560 GBP
Retailer 15£1,574 GBP
Retailer 6£1,612 GBP
Retailer 2£1,821 GBP
Retailer 9£1,836 GBP
Retailer 11£1,907 GBP
Retailer 10£2,356 GBP
MOH London£3,044 GBP

18 data points across 18 retailers

15 retailers£1,420 GBP to £3,044 GBP

Retailer 1
-
£955 GBP
HK$10,000 HKD
Price last confirmed 34 days ago
A
Retailer 2
-
£1,420 GBP
$1,903 USD
View
B+
Retailer 3
-
£1,423 GBP
$1,906 USD
View
B+
Retailer 4
-
£1,435 GBP
$1,923 USD
View
B+
Retailer 5
-
£1,452 GBP
$1,945 USD
View
A
Retailer 6
-
£1,452 GBP
$1,946 USD
View
Final sale: no returns
Retailer 7
-
£1,469 GBP
$1,968 USD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
£1,482 GBP
$1,986 USD
View
A
Retailer 9
-
£1,519 GBP
$2,035 USD
View
Retailer 10
-
£1,560 GBP
$2,090 USD
View
Price last confirmed 10 days ago
B+
Retailer 11
-
£1,574 GBP
$2,109 USD
View
Retailer 12
-
£1,612 GBP
$2,160 USD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
£1,821 GBP
$2,440 USD
View
B+
Retailer 14
-
£1,907 GBP
View
Most Expensive
B
MOH London
73C689494 · Nov 1
£3,044 GBP
View
14 more retailers have this diamond
Prices start from £1,420 GBPSave up to £1,624 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
£1,420 GBP