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Radiant|Natural|GIA

1.21ct G SI1 Radiant Natural Diamond

ID • G/SI1 • GIA 6562357531

Certificate GIA 6562357531

Diamond specifications and retailer prices

From £2,752 GBP
As of November 6, 2026
Save £2,498 GBP (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £5,250 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562357531. Listed at 10 retailers as of November 3, 2026, with prices from £2,752 to £5,250, a £2,498 spread on the same certified stone. NZ Jewellers lists it at £5,250. 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle49.61°
Pavilion angle35.08°
OriginNatural
Grading LabGIA
CertificateGIA 6562357531
Dimensions7.14 × 5.37 × 3.53 mm
L/W Ratio1.33
Girdle conditionThick
Key to symbols
Crystal, Feather, Needle
Top View
7.14 mm5.37 mm1.21 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6562357531
Side View
Table 70.0%Crown 49.61°Girdle: SLI-POLPavilion 35.08°Culet: NoneDepth 65.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £5,250 GBP|Low: £2,752 GBP|High: £5,250 GBP|Avg: £3,484 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 9£2,752 GBP
Retailer 5£2,938 GBP
Retailer 3£3,013 GBP
Retailer 7£3,013 GBP
Retailer 2£3,015 GBP
Retailer 10£3,033 GBP
Retailer 8£3,231 GBP
Retailer 4£3,398 GBP
Retailer 6£5,039 GBP
NZ Jewellers£5,250 GBP

45 data points across 10 retailers

10 retailers£2,752 GBP to £5,250 GBP

B+
Cheapest Retailer
-
£2,752 GBP
B+
Retailer 2
-
£2,938 GBP
View
B+
Retailer 3
-
£3,013 GBP
View
B+
Retailer 4
-
£3,013 GBP
View
B+
Retailer 5
-
£3,015 GBP
View
B+
Retailer 6
-
£3,033 GBP
View
Retailer 7
-
£3,231 GBP
View
Price last confirmed 34 days ago
B+
Retailer 8
-
£3,398 GBP
View
B
Retailer 9
-
£5,039 GBP
View
Most Expensive
B
NZ Jewellers
6796d5b3-795d-4c99-b6e8-bb74f02bc022 · Nov 3
£5,250 GBP
$7,027 USD
View
9 more retailers have this diamond
Prices start from £2,752 GBPSave up to £2,498 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
£2,752 GBP