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Radiant|Natural|IGI

1.21ct D SI2 Radiant Natural Diamond

GD • D/SI2 • IGI 245652999

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI 245652999

Diamond specifications and retailer prices

From £2,331 GBP
$3,120 USD
As of November 5, 2026
1 retailer carries this diamond
Only listing: £2,331 GBP at Brilliance
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliance

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI 245652999. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
D
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabIGI
CertificateIGI 245652999
Dimensions6.03 × 5.19 × 4.10 mm
L/W Ratio1.16
Culet sizePointed
Top View
6.03 mm5.19 mm1.21 ctD / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 245652999
Side View
Table 63.5%CrownGirdle: THK-VTKPavilionCulet: NoneDepth

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,331 GBP|Low: £2,309 GBP|High: £3,298 GBP|Avg: £2,691 GBP|-1.0%
Brilliance
Retailer 2
September 25, 2026
Brilliance£2,331 GBP
Retailer 2£3,298 GBP

5 data points across 2 retailers

1 retailer

B
Brilliance
D45521917 · Nov 5
£2,331 GBP
$3,120 USD
View

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B
1.21ct Radiant
£2,331 GBP