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Radiant|Natural|GIA

1.20ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 2245009600

Certificate GIA 2245009600

Diamond specifications and retailer prices

From £1,849 GBP
As of November 7, 2026
Save £1,407 GBP (43%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,257 GBP at 77 Diamonds · As of November 7, 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 2245009600. Listed at 6 retailers as of November 7, 2026, with prices from £1,849 to £3,257, a £1,407 spread on the same certified stone. 77 Diamonds lists it at £3,257. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2245009600
Dimensions7.27 × 5.39 × 3.65 mm
L/W Ratio1.35
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Pinpoint
Top View
7.27 mm5.39 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2245009600
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.7%

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 7
Current: £3,257 GBP|Low: £1,434 GBP|High: £3,296 GBP|Avg: £2,023 GBP|-1.2%
77 Diamonds
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 3£1,434 GBP
Retailer 8£1,464 GBP
Retailer 10£1,709 GBP
Retailer 11£1,843 GBP
Retailer 7£1,849 GBP
Retailer 4£1,927 GBP
Retailer 13£1,948 GBP
Retailer 9£2,126 GBP
Retailer 12£2,193 GBP
Retailer 5£2,246 GBP
Retailer 6£2,467 GBP
Retailer 2£3,201 GBP
77 Diamonds£3,257 GBP

23 data points across 13 retailers

6 retailers£1,849 GBP to £3,257 GBP

Retailer 1
-
£1,434 GBP
Price last confirmed 64 days ago
B+
Retailer 2
-
£1,849 GBP
View
Retailer 3
-
£2,126 GBP
View
Price last confirmed 62 days ago
B
Retailer 4
-
£2,467 GBP
View
B
Retailer 5
-
£3,201 GBP
View
Most Expensive
B
77 Diamonds
RADMB2MPGMGCB · Nov 7
£3,257 GBP
View
5 more retailers have this diamond
Prices start from £1,849 GBPSave up to £1,407 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
£1,849 GBP