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Cushion|Natural|GIA

1.20ct I SI2 Cushion Natural Diamond

GD • I/SI2 • GIA 5303799521

Certificate GIA 5303799521

Diamond specifications and retailer prices

From £1,366 GBP
HK$14,300 HKD
As of October 31, 2026
Save £1,863 GBP (58%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,229 GBP at MOH London · As of October 26, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5303799521. Listed at 13 retailers as of October 26, 2026, with prices from £1,366 to £3,229, a £1,863 spread on the same certified stone. MOH London lists it at £3,229. 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

1.20
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5303799521
Dimensions6.40 × 5.39 × 3.79 mm
L/W Ratio1.19
Top View
6.40 mm5.39 mm1.20 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 5303799521
Side View
Table 57.0%CrownGirdle: Ext. ThickPavilionCulet: NoneDepth 70.3%

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: Oct 31
Current: £3,229 GBP|Low: £1,357 GBP|High: £3,260 GBP|Avg: £1,926 GBP|-0.9%
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
October 31, 2026
Retailer 2£1,366 GBP
Retailer 3£1,663 GBP
Retailer 12£1,699 GBP
Retailer 13£1,731 GBP
Retailer 6£1,769 GBP
Retailer 9£1,826 GBP
Retailer 11£1,840 GBP
Retailer 14£1,945 GBP
Retailer 8£1,967 GBP
Retailer 10£1,986 GBP
Retailer 4£2,000 GBP
Retailer 5£2,231 GBP
Retailer 7£2,298 GBP
MOH London£3,229 GBP

24 data points across 14 retailers

13 retailers£1,366 GBP to £3,229 GBP

B+
Cheapest Retailer
-
£1,366 GBP
HK$14,300 HKD
B+
Retailer 2
-
£1,663 GBP
$2,228 USD
View
B+
Retailer 3
-
£1,699 GBP
$2,276 USD
View
Final sale: no returns
B+
Retailer 4
-
£1,731 GBP
$2,319 USD
View
B+
Retailer 5
-
£1,826 GBP
View
B
Retailer 6
-
£1,840 GBP
$2,466 USD
View
B
Retailer 7
-
£1,904 GBP
SGD 3,448 SGD
View
B
Retailer 8
-
£1,945 GBP
$2,607 USD
View
B
Retailer 9
-
£1,967 GBP
View
B
Retailer 10
-
£1,986 GBP
$2,661 USD
View
B
Retailer 11
-
£2,000 GBP
$2,680 USD
View
B
Retailer 12
-
£2,298 GBP
€2,933 EUR
View
Most Expensive
C
MOH London
E93EADE4E · Oct 26
£3,229 GBP
View
12 more retailers have this diamond
Prices start from £1,366 GBPSave up to £1,863 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
£1,366 GBP