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Radiant|Natural|GIA

1.21ct F SI2 Radiant Natural Diamond

EX • F/SI2 • GIA 2546879767

Certificate GIA 2546879767

Diamond specifications and retailer prices

From £2,489 GBP
As of November 6, 2026
Save £2,723 GBP (52%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £5,213 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546879767. Listed at 12 retailers as of November 2, 2026, with prices from £2,489 to £5,213, a £2,723 spread on the same certified stone. MOH London lists it at £5,213. 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

1.21
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546879767
Dimensions7.21 × 5.31 × 3.60 mm
L/W Ratio1.36
Top View
7.21 mm5.31 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2546879767
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £5,213 GBP|Low: £2,489 GBP|High: £5,276 GBP|Avg: £3,482 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 8£2,489 GBP
Retailer 9£2,517 GBP
Retailer 7£3,154 GBP
Retailer 6£3,228 GBP
Retailer 3£3,258 GBP
Retailer 2£3,316 GBP
Retailer 4£3,683 GBP
Retailer 5£4,733 GBP
MOH London£5,213 GBP

44 data points across 9 retailers

12 retailers£2,489 GBP to £5,213 GBP

B+
Cheapest Retailer
-
£2,489 GBP
B+
Retailer 2
-
£2,517 GBP
View
B
Retailer 3
-
£3,154 GBP
View
B
Retailer 4
-
£3,228 GBP
View
B
Retailer 5
-
£3,258 GBP
View
B+
Retailer 6
-
£3,316 GBP
View
B
Retailer 7
-
£3,347 GBP
View
B
Retailer 8
-
£3,347 GBP
View
B
Retailer 9
-
£3,459 GBP
View
B
Retailer 10
-
£3,683 GBP
View
B
Retailer 11
-
£4,733 GBP
View
Most Expensive
B
MOH London
2B4605AD0 · Nov 2
£5,213 GBP
View
11 more retailers have this diamond
Prices start from £2,489 GBPSave up to £2,723 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+
1.21ct Radiant
£2,489 GBP