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Cushion|Natural|GIA

1.23ct G SI2 Cushion Natural Diamond

VG • G/SI2 • GIA 6531645209

Certificate GIA 6531645209

Diamond specifications and retailer prices

From £1,013 GBP
As of November 6, 2026
Save £1,315 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,328 GBP at MOH London · As of November 4, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6531645209. Listed at 18 retailers as of November 4, 2026, with prices from £1,013 to £2,328, a £1,315 spread on the same certified stone. MOH London lists it at £2,328. 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
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle36°
OriginNatural
Grading LabGIA
CertificateGIA 6531645209
Dimensions6.14 × 6.03 × 4.05 mm
L/W Ratio1.02
Top View
6.14 mm6.03 mm1.23 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531645209
Side View
Table 63.0%Crown 36.6°Girdle: MED-STKPavilion 36°Culet: NoneDepth 67.2%

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: £2,328 GBP|Low: £937 GBP|High: £2,328 GBP|Avg: £1,305 GBP|+5.5%
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
November 6, 2026
Retailer 17£1,013 GBP
Retailer 3£1,061 GBP
Retailer 8£1,076 GBP
Retailer 15£1,114 GBP
Retailer 14£1,118 GBP
Retailer 9£1,124 GBP
Retailer 12£1,176 GBP
Retailer 13£1,251 GBP
Retailer 2£1,310 GBP
Retailer 4£1,330 GBP
Retailer 6£1,330 GBP
Retailer 5£1,375 GBP
Retailer 11£1,479 GBP
Retailer 7£1,581 GBP
Retailer 16£1,621 GBP
Retailer 10£1,810 GBP
MOH London£2,328 GBP

22 data points across 17 retailers

18 retailers£1,013 GBP to £2,328 GBP

A
Cheapest Retailer
-
£1,013 GBP
A
Retailer 2
-
£1,061 GBP
View
A
Retailer 3
-
£1,076 GBP
View
A
Retailer 4
-
£1,076 GBP
View
A
Retailer 5
-
£1,114 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,118 GBP
View
Retailer 7
-
£1,124 GBP
View
Price last confirmed 9 days ago
A
Retailer 8
-
£1,176 GBP
View
A
Retailer 9
-
£1,251 GBP
View
A
Retailer 10
-
£1,310 GBP
View
A
Retailer 11
-
£1,330 GBP
View
A
Retailer 12
-
£1,330 GBP
View
A
Retailer 13
-
£1,375 GBP
View
A
Retailer 14
-
£1,479 GBP
View
B+
Retailer 15
-
£1,581 GBP
View
B+
Retailer 16
-
£1,621 GBP
View
B+
Retailer 17
-
£1,810 GBP
View
Most Expensive
B+
MOH London
651383700 · Nov 4
£2,328 GBP
View
17 more retailers have this diamond
Prices start from £1,013 GBPSave up to £1,315 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
1.23ct Cushion
£1,013 GBP