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Radiant|Natural|GIA

1.20ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 3535630146

Certificate GIA 3535630146

Diamond specifications and retailer prices

From £974 GBP
HK$10,200 HKD
As of October 30, 2026
Save £1,310 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,163 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded J 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 3535630146. Listed at 16 retailers as of October 29, 2026, with a 134% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3535630146
Dimensions7.17 × 5.46 × 3.75 mm
L/W Ratio1.31
Top View
7.17 mm5.46 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3535630146
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.8%

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: Oct 30
Current: £3,163 GBP|Low: £974 GBP|High: £3,163 GBP|Avg: £1,517 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 5£974 GBP
Retailer 2£1,044 GBP
Retailer 12£1,196 GBP
Retailer 9£1,216 GBP
Retailer 4£1,296 GBP
Retailer 11£1,296 GBP
Retailer 3£1,365 GBP
Retailer 13£1,399 GBP
Retailer 6£1,453 GBP
Retailer 10£1,496 GBP
Retailer 8£1,768 GBP
Retailer 7£2,284 GBP
NZ Jewellers£3,163 GBP

36 data points across 13 retailers

16 retailers£974 GBP to £2,284 GBP

A
Cheapest Retailer
-
£974 GBP
HK$10,200 HKD
A
Retailer 2
-
£1,044 GBP
₹133,247 INR
View
A
Retailer 3
-
£1,196 GBP
$1,603 USD
View
Final sale: no returns
A
Retailer 4
-
£1,216 GBP
SGD 2,202 SGD
View
A
Retailer 5
-
£1,242 GBP
$1,664 USD
View
Retailer 6
-
£1,296 GBP
$1,737 USD
View
Price last confirmed 16 days ago
Retailer 7
-
£1,296 GBP
$1,737 USD
View
Price last confirmed 13 days ago
Retailer 8
-
£1,357 GBP
$1,818 USD
View
Price last confirmed 15 days ago
B+
Retailer 9
-
£1,365 GBP
SGD 2,471 SGD
View
B+
Retailer 10
-
£1,399 GBP
$1,874 USD
View
B+
Retailer 11
-
£1,450 GBP
A$2,988 AUD
View
B+
Retailer 12
-
£1,453 GBP
View
Retailer 13
-
£1,496 GBP
$2,005 USD
View
Price last confirmed 13 days ago
B+
Retailer 14
-
£1,768 GBP
€2,256 EUR
View
B
Retailer 15
-
£2,284 GBP
View
Most Expensive
NZ Jewellers
bf162b5a-0506-4079-a41f-b7119dbcf0d0 · Oct 17
£3,163 GBP
$4,238 USD
View
Price last confirmed 14 days ago
15 more retailers have this diamond
Prices start from £974 GBPSave up to £1,310 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 Radiant
£974 GBP