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Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 2456032341

Certificate GIA 2456032341

Diamond specifications and retailer prices

From £2,197 GBP
As of November 6, 2026
Save £2,519 GBP (53%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,716 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2456032341. Listed at 11 retailers as of November 5, 2026, with prices from £2,197 to £4,716, a £2,519 spread on the same certified stone. NZ Jewellers lists it at £4,716. 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2456032341
Dimensions7.16 × 5.46 × 3.30 mm
L/W Ratio1.31
Top View
7.16 mm5.46 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2456032341
Side View
Table 69.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.6%

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 6
Current: £2,828 GBP|Low: £2,264 GBP|High: £4,581 GBP|Avg: £3,106 GBP|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 5£2,264 GBP
Retailer 2£2,625 GBP
Retailer 1£2,828 GBP
Retailer 3£3,003 GBP
Retailer 4£4,527 GBP

42 data points across 5 retailers

11 retailers£2,197 GBP to £4,716 GBP

B+
Cheapest Retailer
-
£2,197 GBP
B
Retailer 2
-
£2,264 GBP
View
Final sale: no returns
B
Retailer 3
-
£2,452 GBP
View
B
Retailer 4
-
£2,531 GBP
View
B
Retailer 5
-
£2,546 GBP
View
B
Retailer 6
-
£2,625 GBP
View
B
Retailer 7
-
£2,828 GBP
View
B
Retailer 8
-
£2,829 GBP
View
B
Retailer 9
-
£3,003 GBP
View
B
Retailer 10
-
£4,527 GBP
View
Most Expensive
B
NZ Jewellers
0003377b-c99c-4edd-985c-897e4d3d6e06 · Nov 5
£4,716 GBP
$6,312 USD
View
10 more retailers have this diamond
Prices start from £2,197 GBPSave up to £2,519 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 Radiant
£2,197 GBP