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Radiant|Natural|GIA

1.21ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 2566444631

Certificate GIA 2566444631

Diamond specifications and retailer prices

From £2,524 GBP
As of November 4, 2026
Save £2,011 GBP (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,534 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 2566444631. Listed at 14 retailers as of November 4, 2026, with prices from £2,524 to £4,534, a £2,011 spread on the same certified stone. Wholesale Diamonds Direct lists it at £4,534. 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 2566444631
Dimensions7.41 × 5.30 × 3.60 mm
L/W Ratio1.40
Culet sizeNone
Top View
7.41 mm5.30 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566444631
Side View
Table 68.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.9%

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 4
Current: £2,913 GBP|Low: £2,524 GBP|High: £4,534 GBP|Avg: £3,272 GBP|-0.3%
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
Wholesale Diamonds Direct
November 7, 2026
Retailer 12£2,524 GBP
Retailer 3£2,565 GBP
Retailer 8£2,585 GBP
Retailer 10£2,696 GBP
Retailer 9£2,734 GBP
Retailer 5£2,754 GBP
Retailer 1£2,913 GBP
Retailer 11£3,210 GBP
Retailer 4£3,248 GBP
Retailer 7£3,363 GBP
Retailer 6£3,502 GBP
Retailer 2£4,256 GBP
Retailer 13£4,522 GBP
Wholesale Diamonds Direct£4,534 GBP

38 data points across 14 retailers

14 retailers£2,524 GBP to £4,534 GBP

B+
Cheapest Retailer
-
£2,524 GBP
B+
Retailer 2
-
£2,565 GBP
View
B+
Retailer 3
-
£2,585 GBP
View
B+
Retailer 4
-
£2,696 GBP
View
Retailer 5
-
£2,734 GBP
View
Price last confirmed 10 days ago
B+
Retailer 6
-
£2,754 GBP
View
B+
Retailer 7
-
£2,913 GBP
View
B
Retailer 8
-
£3,210 GBP
View
B
Retailer 9
-
£3,248 GBP
View
B
Retailer 10
-
£3,363 GBP
View
B
Retailer 11
-
£3,502 GBP
View
B
Retailer 12
-
£4,256 GBP
View
B
Retailer 13
-
£4,522 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
451166363 · Nov 6
£4,534 GBP
$6,069 USD
View
13 more retailers have this diamond
Prices start from £2,524 GBPSave up to £2,011 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
£2,524 GBP