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Radiant|Natural|GIA

1.21ct I SI2 Radiant Natural Diamond

GD • I/SI2 • GIA 2474129173

Certificate GIA 2474129173

Diamond specifications and retailer prices

From £2,601 GBP
As of November 5, 2026
Save £238 GBP (8%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,839 GBP at Jared · As of November 4, 2026
View at Jared

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2474129173. Listed at 5 retailers as of November 4, 2026, with a relatively tight 9% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle53.09°
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 2474129173
Dimensions7.17 × 5.32 × 3.65 mm
L/W Ratio1.35
Top View
7.17 mm5.32 mm1.21 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2474129173
Side View
Table 66.0%Crown 53.09°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 68.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: £2,839 GBP|Low: £2,107 GBP|High: £2,839 GBP|Avg: £2,616 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 5, 2026
Retailer 2£2,107 GBP
Retailer 3£2,601 GBP
Retailer 4£2,749 GBP
Retailer 5£2,749 GBP
Jared£2,839 GBP

3 data points across 5 retailers

5 retailers£2,601 GBP to £2,839 GBP

Retailer 1
-
£2,107 GBP
Price last confirmed 33 days ago
B
Retailer 2
-
£2,601 GBP
View
B
Retailer 3
-
£2,749 GBP
View
B
Retailer 4
-
£2,749 GBP
View
Most Expensive
B
Jared
148977185 · Nov 4
£2,839 GBP
$3,800 USD
View
4 more retailers have this diamond
Prices start from £2,601 GBPSave up to £238 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
£2,601 GBP