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Cushion|Natural|GIA

1.20ct H SI2 Cushion Natural Diamond

ID • H/SI2 • GIA 3405785665

Certificate GIA 3405785665

Diamond specifications and retailer prices

From £889 GBP
As of November 6, 2026
Save £1,240 GBP (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,129 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded H 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 3405785665. Listed at 17 retailers as of November 4, 2026, with prices from £889 to £2,129, a £1,240 spread on the same certified stone. MOH London lists it at £2,129. 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

1.20
Carat
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3405785665
Dimensions6.11 × 5.68 × 3.96 mm
L/W Ratio1.08
Top View
6.11 mm5.68 mm1.20 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3405785665
Side View
Table 67.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,129 GBP|Low: £889 GBP|High: £2,161 GBP|Avg: £1,318 GBP|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2£889 GBP
Retailer 8£889 GBP
Retailer 7£1,084 GBP
Retailer 10£1,124 GBP
Retailer 3£1,198 GBP
Retailer 9£1,231 GBP
Retailer 5£1,236 GBP
Retailer 6£1,352 GBP
Retailer 4£1,655 GBP
MOH London£2,129 GBP

28 data points across 10 retailers

17 retailers£889 GBP to £2,129 GBP

A
Cheapest Retailer
-
£889 GBP
A
Retailer 2
-
£889 GBP
View
A
Retailer 3
-
£1,084 GBP
View
A
Retailer 4
-
£1,124 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,129 GBP
View
A
Retailer 6
-
£1,151 GBP
View
A
Retailer 7
-
£1,198 GBP
View
Retailer 8
-
£1,219 GBP
View
Price last confirmed 9 days ago
A
Retailer 9
-
£1,231 GBP
View
A
Retailer 10
-
£1,236 GBP
View
A
Retailer 11
-
£1,252 GBP
View
A
Retailer 12
-
£1,320 GBP
View
A
Retailer 13
-
£1,352 GBP
View
B+
Retailer 14
-
£1,655 GBP
View
B+
Retailer 15
-
£1,712 GBP
View
B+
Retailer 16
-
£1,875 GBP
View
Most Expensive
B+
MOH London
629784957 · Nov 4
£2,129 GBP
View
16 more retailers have this diamond
Prices start from £889 GBPSave up to £1,240 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
1.20ct Cushion
£889 GBP