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Radiant|Natural|GIA

1.21ct I SI2 Radiant Natural Diamond

I/SI2 • GIA 7568523209

Certificate GIA 7568523209

Diamond specifications and retailer prices

From £1,654 GBP
As of November 6, 2026
Save £2,952 GBP (64%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,606 GBP at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI2 clarity (slightly-included) and certified by GIA 7568523209. Listed at 14 retailers as of November 5, 2026, with prices from £1,654 to £4,606, a £2,952 spread on the same certified stone. NZ Jewellers lists it at £4,606. 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
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7568523209
Dimensions7.36 × 5.32 × 3.55 mm
L/W Ratio1.38
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal, Needle
Top View
7.36 mm5.32 mm1.21 ctI / SI2
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7568523209
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,606 GBP|Low: £1,644 GBP|High: £4,701 GBP|Avg: £2,431 GBP|+15.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8£1,654 GBP
Retailer 2£1,659 GBP
Retailer 5£1,942 GBP
Retailer 10£2,034 GBP
Retailer 3£2,090 GBP
Retailer 6£2,166 GBP
Retailer 11£2,203 GBP
Retailer 9£2,288 GBP
Retailer 13£2,307 GBP
Retailer 12£2,371 GBP
Retailer 4£2,542 GBP
Retailer 7£3,684 GBP
NZ Jewellers£4,606 GBP

29 data points across 13 retailers

14 retailers£1,654 GBP to £4,606 GBP

A
Cheapest Retailer
-
£1,654 GBP
A
Retailer 2
-
£1,659 GBP
View
B
Retailer 3
-
£2,034 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,090 GBP
View
B+
Retailer 5
-
£2,166 GBP
View
B+
Retailer 6
-
£2,203 GBP
View
B
Retailer 7
-
£2,288 GBP
View
Retailer 8
-
£2,307 GBP
View
Price last confirmed 11 days ago
B
Retailer 9
-
£2,371 GBP
View
B
Retailer 10
-
£2,542 GBP
View
Retailer 11
-
£2,647 GBP
View
Price last confirmed 29 days ago
B
Retailer 12
-
£3,684 GBP
View
Retailer 13
-
£3,996 GBP
View
Price last confirmed 29 days ago
Most Expensive
C
NZ Jewellers
70bb99a5-11c0-4c1f-beb1-7b90743d7451 · Nov 5
£4,606 GBP
$6,165 USD
View
13 more retailers have this diamond
Prices start from £1,654 GBPSave up to £2,952 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.

A
1.21ct Radiant
£1,654 GBP