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Radiant|Natural|GIA

1.21ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 2241023105

Certificate GIA 2241023105

Diamond specifications and retailer prices

From £2,421 GBP
As of November 5, 2026
Save £1,837 GBP (43%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,258 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded F 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 2241023105. Listed at 10 retailers as of November 5, 2026, with prices from £2,421 to £4,258, a £1,837 spread on the same certified stone. Wholesale Diamonds Direct lists it at £4,258. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2241023105
Dimensions7.29 × 5.40 × 3.65 mm
L/W Ratio1.35
Culet sizeNone
Top View
7.29 mm5.40 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2241023105
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.6%

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 5
Current: £2,757 GBP|Low: £2,408 GBP|High: £4,342 GBP|Avg: £3,037 GBP|-2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 7, 2026
Retailer 4£2,421 GBP
Retailer 5£2,548 GBP
Retailer 6£2,553 GBP
Retailer 1£2,757 GBP
Retailer 8£2,848 GBP
Retailer 7£3,063 GBP
Retailer 3£3,150 GBP
Retailer 2£3,279 GBP
Retailer 9£3,987 GBP
Wholesale Diamonds Direct£4,258 GBP

39 data points across 10 retailers

10 retailers£2,421 GBP to £4,258 GBP

B+
Cheapest Retailer
-
£2,421 GBP
B+
Retailer 2
-
£2,548 GBP
View
B+
Retailer 3
-
£2,553 GBP
View
B+
Retailer 4
-
£2,757 GBP
View
B+
Retailer 5
-
£2,848 GBP
View
B+
Retailer 6
-
£3,063 GBP
View
B+
Retailer 7
-
£3,150 GBP
View
B+
Retailer 8
-
£3,279 GBP
View
B
Retailer 9
-
£3,987 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
265399287 · Nov 6
£4,258 GBP
$5,700 USD
View
9 more retailers have this diamond
Prices start from £2,421 GBPSave up to £1,837 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
£2,421 GBP