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Radiant|Natural|GIA

1.20ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 6422630111

Certificate GIA 6422630111

Diamond specifications and retailer prices

From £2,055 GBP
As of November 4, 2026
Save £1,070 GBP (34%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,125 GBP at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

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 6422630111. Listed at 5 retailers as of November 4, 2026, with prices from £2,055 to £3,125, a £1,070 spread on the same certified stone. 77 Diamonds lists it at £3,125. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6422630111
Dimensions7.26 × 5.06 × 3.49 mm
L/W Ratio1.43
Top View
7.26 mm5.06 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6422630111
Side View
Table 64.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 68.9%

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 4
Current: £3,125 GBP|Low: £1,934 GBP|High: £3,168 GBP|Avg: £2,307 GBP|+1.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 5£2,055 GBP
Retailer 3£2,102 GBP
Retailer 2£2,127 GBP
Retailer 4£2,145 GBP
77 Diamonds£3,125 GBP

35 data points across 5 retailers

5 retailers£2,055 GBP to £3,125 GBP

B+
Cheapest Retailer
-
£2,055 GBP
B+
Retailer 2
-
£2,102 GBP
View
B+
Retailer 3
-
£2,127 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,145 GBP
View
Most Expensive
B
77 Diamonds
RADZVXKHNWR7 · Nov 5
£3,125 GBP
View
4 more retailers have this diamond
Prices start from £2,055 GBPSave up to £1,070 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
£2,055 GBP