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Radiant|Natural|GIA

1.20ct G SI2 Radiant Natural Diamond

ID • G/SI2 • GIA 1518420796

Certificate GIA 1518420796

Diamond specifications and retailer prices

From £2,118 GBP
As of November 4, 2026
Save £2,204 GBP (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,322 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 G 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 1518420796. Listed at 15 retailers as of November 4, 2026, with prices from £2,118 to £4,322, a £2,204 spread on the same certified stone. NZ Jewellers lists it at £4,322. 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
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1518420796
Dimensions7.54 × 5.12 × 3.56 mm
L/W Ratio1.47
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Knot, Feather, Cloud, Cavity, Needle, Indented Natural
Top View
7.54 mm5.12 mm1.20 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1518420796
Side View
Table 69.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 69.5%

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 4
Current: £4,322 GBP|Low: £2,118 GBP|High: £4,400 GBP|Avg: £2,865 GBP|-1.8%
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
November 7, 2026
Retailer 9£2,118 GBP
Retailer 3£2,202 GBP
Retailer 4£2,262 GBP
Retailer 6£2,381 GBP
Retailer 11£2,481 GBP
Retailer 13£2,481 GBP
Retailer 2£2,567 GBP
Retailer 12£2,576 GBP
Retailer 10£2,588 GBP
Retailer 5£2,862 GBP
Retailer 7£2,888 GBP
Retailer 8£4,038 GBP
NZ Jewellers£4,322 GBP

36 data points across 13 retailers

15 retailers£2,118 GBP to £4,322 GBP

A
Cheapest Retailer
-
£2,118 GBP
B+
Retailer 2
-
£2,202 GBP
View
B+
Retailer 3
-
£2,262 GBP
View
B+
Retailer 4
-
£2,381 GBP
View
B+
Retailer 5
-
£2,481 GBP
View
Retailer 6
-
£2,481 GBP
View
Price last confirmed 9 days ago
Retailer 7
-
£2,525 GBP
View
Price last confirmed 26 days ago
B+
Retailer 8
-
£2,567 GBP
View
B+
Retailer 9
-
£2,576 GBP
View
B+
Retailer 10
-
£2,588 GBP
View
B+
Retailer 11
-
£2,862 GBP
View
B+
Retailer 12
-
£2,888 GBP
View
Retailer 13
-
£2,914 GBP
View
Price last confirmed 29 days ago
B
Retailer 14
-
£4,038 GBP
View
Most Expensive
B
NZ Jewellers
512506f9-5725-44a6-b52f-d8d717bae660 · Nov 5
£4,322 GBP
$5,785 USD
View
14 more retailers have this diamond
Prices start from £2,118 GBPSave up to £2,204 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
£2,118 GBP