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Cushion|Natural|GIA

1.20ct D SI1 Cushion Natural Diamond

ID • D/SI1 • GIA 6555439773

Certificate GIA 6555439773

Diamond specifications and retailer prices

From £2,572 GBP
As of November 4, 2026
Save £2,902 GBP (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,475 GBP at MOH London · As of November 2, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555439773. Listed at 19 retailers as of November 2, 2026, with prices from £2,572 to £5,475, a £2,902 spread on the same certified stone. MOH London lists it at £5,475. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555439773
Dimensions7.35 × 5.49 × 3.62 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Needle
Top View
7.35 mm5.49 mm1.20 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555439773
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.0%

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 4
Current: £5,475 GBP|Low: £2,553 GBP|High: £5,727 GBP|Avg: £3,697 GBP|-4.4%
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
November 5, 2026
Retailer 12£2,572 GBP
Retailer 9£2,709 GBP
Retailer 5£2,965 GBP
Retailer 2£3,163 GBP
Retailer 3£3,172 GBP
Retailer 6£3,275 GBP
Retailer 10£3,352 GBP
Retailer 7£3,384 GBP
Retailer 4£3,519 GBP
Retailer 14£3,549 GBP
Retailer 8£3,873 GBP
Retailer 11£4,224 GBP
Retailer 13£5,408 GBP
MOH London£5,475 GBP

25 data points across 14 retailers

19 retailers£2,572 GBP to £5,475 GBP

B+
Cheapest Retailer
-
£2,572 GBP
B+
Retailer 2
-
£2,709 GBP
View
Retailer 3
-
£2,965 GBP
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£3,163 GBP
View
B+
Retailer 5
-
£3,172 GBP
View
Final sale: no returns
B
Retailer 6
-
£3,270 GBP
View
B
Retailer 7
-
£3,272 GBP
View
Retailer 8
-
£3,275 GBP
View
Price last confirmed 11 days ago
B+
Retailer 9
-
£3,352 GBP
View
B+
Retailer 10
-
£3,384 GBP
View
B
Retailer 11
-
£3,485 GBP
View
B
Retailer 12
-
£3,519 GBP
View
B
Retailer 13
-
£3,549 GBP
View
Retailer 14
-
£3,558 GBP
View
Price last confirmed 22 days ago
Retailer 15
-
£3,618 GBP
View
Price last confirmed 29 days ago
B
Retailer 16
-
£3,873 GBP
View
B
Retailer 17
-
£4,224 GBP
View
Retailer 18
-
£5,408 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
80E0F79BE · Nov 2
£5,475 GBP
View
18 more retailers have this diamond
Prices start from £2,572 GBPSave up to £2,902 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+
1.20ct Cushion
£2,572 GBP