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Cushion|Natural|GIA

1.20ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6495470525

Certificate GIA 6495470525

Diamond specifications and retailer prices

From £1,002 GBP
HK$10,500 HKD
As of November 1, 2026
Save £1,303 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,304 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 J 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 6495470525. Listed at 16 retailers as of November 1, 2026, with prices from £1,002 to £2,304, a £1,303 spread on the same certified stone. MOH London lists it at £2,304. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6495470525
Dimensions7.03 × 5.45 × 3.78 mm
L/W Ratio1.29
Top View
7.03 mm5.45 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6495470525
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.4%

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 1
Current: £2,304 GBP|Low: £992 GBP|High: £2,332 GBP|Avg: £1,427 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 8£1,002 GBP
Retailer 2£1,070 GBP
Retailer 11£1,087 GBP
Retailer 5£1,283 GBP
Retailer 10£1,315 GBP
Retailer 4£1,398 GBP
Retailer 3£1,418 GBP
Retailer 12£1,453 GBP
Retailer 7£1,474 GBP
Retailer 9£1,602 GBP
Retailer 6£1,797 GBP
MOH London£2,304 GBP

26 data points across 12 retailers

16 retailers£1,002 GBP to £2,304 GBP

A
Cheapest Retailer
-
£1,002 GBP
HK$10,500 HKD
A
Retailer 2
-
£1,070 GBP
₹136,701 INR
View
A
Retailer 3
-
£1,087 GBP
SGD 1,971 SGD
View
B+
Retailer 4
-
£1,275 GBP
$1,711 USD
View
B+
Retailer 5
-
£1,278 GBP
$1,715 USD
View
B+
Retailer 6
-
£1,283 GBP
View
B+
Retailer 7
-
£1,315 GBP
$1,765 USD
View
B+
Retailer 8
-
£1,398 GBP
SGD 2,536 SGD
View
B+
Retailer 9
-
£1,418 GBP
$1,902 USD
View
B+
Retailer 10
-
£1,423 GBP
A$2,938 AUD
View
B+
Retailer 11
-
£1,453 GBP
$1,950 USD
View
B+
Retailer 12
-
£1,474 GBP
View
Retailer 13
-
£1,602 GBP
ZAR 34,723 ZAR
View
Price last confirmed 7 days ago
Retailer 14
-
£1,729 GBP
A$3,569 AUD
View
Price last confirmed 28 days ago
B+
Retailer 15
-
£1,797 GBP
€2,296 EUR
View
Most Expensive
B
MOH London
323C38BBB · Nov 2
£2,304 GBP
View
15 more retailers have this diamond
Prices start from £1,002 GBPSave up to £1,303 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
£1,002 GBP