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Radiant|Natural|GIA

1.20ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 6551596013

Certificate GIA 6551596013

Diamond specifications and retailer prices

From £2,448 GBP
As of November 6, 2026
Save £2,703 GBP (52%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £5,822 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551596013. Listed at 22 retailers as of November 4, 2026, with a 110% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551596013
Dimensions7.69 × 5.30 × 3.60 mm
L/W Ratio1.45
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.69 mm5.30 mm1.20 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551596013
Side View
Table 68.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.9%

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 6
Current: £3,284 GBP|Low: £2,429 GBP|High: £5,356 GBP|Avg: £3,522 GBP|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 7, 2026
Retailer 14£2,448 GBP
Retailer 7£2,535 GBP
Retailer 5£2,907 GBP
Retailer 12£2,956 GBP
Retailer 4£2,993 GBP
Retailer 9£3,087 GBP
Retailer 8£3,146 GBP
Retailer 1£3,284 GBP
Retailer 6£3,342 GBP
Retailer 3£3,354 GBP
Retailer 10£3,649 GBP
Retailer 11£3,957 GBP
Retailer 13£5,151 GBP
Retailer 2£5,251 GBP

24 data points across 14 retailers

22 retailers£2,448 GBP to £5,151 GBP

A
Cheapest Retailer
-
£2,448 GBP
A
Retailer 2
-
£2,535 GBP
View
B+
Retailer 3
-
£2,907 GBP
View
B+
Retailer 4
-
£2,956 GBP
View
B+
Retailer 5
-
£2,993 GBP
View
Final sale: no returns
B+
Retailer 6
-
£3,056 GBP
View
B+
Retailer 7
-
£3,059 GBP
View
B+
Retailer 8
-
£3,087 GBP
View
B+
Retailer 9
-
£3,146 GBP
View
B+
Retailer 10
-
£3,242 GBP
View
B+
Retailer 11
-
£3,284 GBP
View
Retailer 12
-
£3,342 GBP
View
Price last confirmed 20 days ago
Retailer 13
-
£3,342 GBP
View
Price last confirmed 22 days ago
Retailer 14
-
£3,342 GBP
View
Price last confirmed 22 days ago
B+
Retailer 15
-
£3,354 GBP
View
Retailer 16
-
£3,579 GBP
View
Price last confirmed 29 days ago
B+
Retailer 17
-
£3,649 GBP
View
Retailer 18
-
£3,856 GBP
View
Price last confirmed 19 days ago
B
Retailer 19
-
£3,957 GBP
View
B
Retailer 20
-
£5,151 GBP
View
Retailer 21
-
£5,251 GBP
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
25c61bb8-2ffe-42e2-83bd-8333ee437c0f · Oct 17
£5,822 GBP
$7,793 USD
View
Price last confirmed 20 days ago
21 more retailers have this diamond
Prices start from £2,448 GBPSave up to £2,703 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
£2,448 GBP