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Cushion|Natural|GIA

1.30ct G SI1 Cushion Natural Diamond

ID • G/SI1 • GIA 7426459003

Certificate GIA 7426459003

Diamond specifications and retailer prices

From £2,895 GBP
As of November 6, 2026
Save £3,164 GBP (52%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £6,059 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half 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 7426459003. Listed at 11 retailers as of November 4, 2026, with prices from £2,895 to £6,059, a £3,164 spread on the same certified stone. MOH London lists it at £6,059. 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

1.30
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7426459003
Dimensions6.38 × 5.87 × 4.07 mm
L/W Ratio1.09
Top View
6.38 mm5.87 mm1.30 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7426459003
Side View
Table 63.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 69.2%

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: £6,059 GBP|Low: £2,895 GBP|High: £6,148 GBP|Avg: £3,897 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7£2,895 GBP
Retailer 8£3,014 GBP
Retailer 5£3,455 GBP
Retailer 6£3,657 GBP
Retailer 2£3,756 GBP
Retailer 4£3,845 GBP
Retailer 3£4,299 GBP
MOH London£6,059 GBP

44 data points across 8 retailers

11 retailers£2,895 GBP to £6,059 GBP

A
Cheapest Retailer
-
£2,895 GBP
B+
Retailer 2
-
£3,014 GBP
View
B+
Retailer 3
-
£3,245 GBP
View
B+
Retailer 4
-
£3,431 GBP
View
Retailer 5
-
£3,455 GBP
View
Price last confirmed 9 days ago
B
Retailer 6
-
£3,657 GBP
View
B+
Retailer 7
-
£3,756 GBP
View
Retailer 8
-
£3,845 GBP
View
Price last confirmed 29 days ago
Retailer 9
-
£4,211 GBP
View
Price last confirmed 15 days ago
B
Retailer 10
-
£4,299 GBP
View
Most Expensive
B
MOH London
FB5C5F0BE · Nov 4
£6,059 GBP
View
10 more retailers have this diamond
Prices start from £2,895 GBPSave up to £3,164 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
1.30ct Cushion
£2,895 GBP