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Cushion|Natural|GIA

1.23ct J SI2 Cushion Natural Diamond

GD • J/SI2 • GIA 7318471513

Certificate GIA 7318471513

Diamond specifications and retailer prices

From £1,385 GBP
HK$14,500 HKD
As of November 1, 2026
Save £1,509 GBP (52%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,894 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.23ct natural cushion diamond

This 1.23ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7318471513. Listed at 10 retailers as of November 1, 2026, with prices from £1,385 to £2,894, a £1,509 spread on the same certified stone. MOH London lists it at £2,894. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
J
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7318471513
Dimensions5.91 × 5.77 × 4.13 mm
L/W Ratio1.02
Top View
5.91 mm5.77 mm1.23 ctJ / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 7318471513
Side View
Table 61.0%CrownGirdle: ThickPavilionCulet: NoneDepth 71.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,894 GBP|Low: £1,376 GBP|High: £2,925 GBP|Avg: £1,798 GBP|-1.1%
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
November 2, 2026
Retailer 7£1,385 GBP
Retailer 11£1,493 GBP
Retailer 10£1,524 GBP
Retailer 9£1,652 GBP
Retailer 6£1,655 GBP
Retailer 5£1,664 GBP
Retailer 12£1,756 GBP
Retailer 2£1,798 GBP
Retailer 13£1,846 GBP
Retailer 3£1,858 GBP
Retailer 4£1,991 GBP
Retailer 8£2,063 GBP
MOH London£2,894 GBP

27 data points across 13 retailers

10 retailers£1,385 GBP to £2,894 GBP

B+
Cheapest Retailer
-
£1,385 GBP
HK$14,500 HKD
B
Retailer 2
-
£1,493 GBP
$2,000 USD
View
B
Retailer 3
-
£1,524 GBP
$2,042 USD
View
Final sale: no returns
B
Retailer 4
-
£1,652 GBP
$2,213 USD
View
B
Retailer 5
-
£1,655 GBP
View
B
Retailer 6
-
£1,756 GBP
$2,352 USD
View
B
Retailer 7
-
£1,798 GBP
View
B
Retailer 8
-
£1,858 GBP
$2,490 USD
View
B
Retailer 9
-
£2,063 GBP
€2,632 EUR
View
Most Expensive
C
MOH London
362B58072 · Nov 1
£2,894 GBP
View
9 more retailers have this diamond
Prices start from £1,385 GBPSave up to £1,509 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.

B+
1.23ct Cushion
£1,385 GBP