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Radiant|Natural|GIA

1.20ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 09

Certificate GIA 09

Diamond specifications and retailer prices

From £1,801 GBP
As of November 4, 2026
Save £2,607 GBP (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,408 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 I 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. Listed at 9 retailers as of November 4, 2026, with prices from £1,801 to £4,408, a £2,607 spread on the same certified stone. NZ Jewellers lists it at £4,408. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 09
Dimensions7.20 × 5.29 × 3.58 mm
L/W Ratio1.36
Top View
7.20 mm5.29 mm1.20 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 09
Side View
Table 65.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 67.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £4,408 GBP|Low: £1,762 GBP|High: £4,408 GBP|Avg: £2,404 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 4£1,801 GBP
Retailer 5£1,910 GBP
Retailer 2£1,979 GBP
Retailer 6£2,075 GBP
Retailer 3£2,183 GBP
NZ Jewellers£4,408 GBP

10 data points across 6 retailers

9 retailers£1,801 GBP to £4,408 GBP

A
Cheapest Retailer
-
£1,801 GBP
B+
Retailer 2
-
£1,910 GBP
View
Retailer 3
-
£1,910 GBP
View
Price last confirmed 31 days ago
B+
Retailer 4
-
£1,979 GBP
View
B+
Retailer 5
-
£2,075 GBP
View
B+
Retailer 6
-
£2,183 GBP
View
Retailer 7
-
£2,204 GBP
View
Price last confirmed 31 days ago
Retailer 8
-
£4,408 GBP
View
Price last confirmed 32 days ago
Most Expensive
B
NZ Jewellers
b3435741-727a-496b-a629-c26c56224afa · Nov 5
£4,408 GBP
$5,900 USD
View
8 more retailers have this diamond
Prices start from £1,801 GBPSave up to £2,607 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
£1,801 GBP