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Cushion|Natural|GIA

1.23ct G SI1 Cushion Natural Diamond

ID • G/SI1 • GIA 7551441810

Certificate GIA 7551441810

Diamond specifications and retailer prices

From £1,980 GBP
As of November 6, 2026
Save £2,269 GBP (53%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,249 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551441810. Listed at 7 retailers as of November 4, 2026, with prices from £1,980 to £4,249, a £2,269 spread on the same certified stone. MOH London lists it at £4,249. 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

1.23
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551441810
Dimensions7.08 × 5.46 × 3.65 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.08 mm5.46 mm1.23 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551441810
Side View
Table 63.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 66.9%

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: £4,249 GBP|Low: £1,980 GBP|High: £4,283 GBP|Avg: £3,127 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2£1,980 GBP
Retailer 7£2,081 GBP
Retailer 5£2,469 GBP
Retailer 3£2,540 GBP
Retailer 4£2,966 GBP
Retailer 6£3,109 GBP
MOH London£4,249 GBP

39 data points across 7 retailers

7 retailers£1,980 GBP to £4,249 GBP

A
Cheapest Retailer
-
£1,980 GBP
B+
Retailer 2
-
£2,081 GBP
View
B+
Retailer 3
-
£2,469 GBP
View
B+
Retailer 4
-
£2,540 GBP
View
B+
Retailer 5
-
£2,966 GBP
View
B
Retailer 6
-
£3,109 GBP
View
Most Expensive
B
MOH London
DD449BBB5 · Nov 4
£4,249 GBP
View
6 more retailers have this diamond
Prices start from £1,980 GBPSave up to £2,269 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
£1,980 GBP