Radiant|Natural|GIA

1.21ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 2233875598

Certificate GIA 2233875598

Diamond specifications and retailer prices

From £2,863 GBP
As of November 5, 2026
Save £2,957 GBP (51%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £6,383 GBP at NZ Jewellers · As of October 27, 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 E 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 2233875598. Listed at 22 retailers as of November 4, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2233875598
Dimensions7.33 × 5.38 × 3.65 mm
L/W Ratio1.36
Culet sizeNone
Top View
7.33 mm5.38 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2233875598
Side View
Table 68.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.8%

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 5
Current: £3,607 GBP|Low: £2,651 GBP|High: £5,905 GBP|Avg: £3,954 GBP|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 2£3,034 GBP
Retailer 6£3,118 GBP
Retailer 8£3,319 GBP
Retailer 1£3,607 GBP
Retailer 7£3,693 GBP
Retailer 3£4,084 GBP
Retailer 4£4,470 GBP
Retailer 5£5,820 GBP

46 data points across 8 retailers

22 retailers£2,863 GBP to £5,820 GBP

B+
Cheapest Retailer
-
£2,863 GBP
B+
Retailer 2
-
£2,921 GBP
View
B+
Retailer 3
-
£3,030 GBP
View
B+
Retailer 4
-
£3,034 GBP
View
Final sale: no returns
B+
Retailer 5
-
£3,118 GBP
View
B+
Retailer 6
-
£3,145 GBP
View
B+
Retailer 7
-
£3,299 GBP
View
Retailer 8
-
£3,319 GBP
View
Price last confirmed 12 days ago
Retailer 9
-
£3,319 GBP
View
Price last confirmed 13 days ago
Retailer 10
-
£3,319 GBP
View
Price last confirmed 13 days ago
B+
Retailer 11
-
£3,529 GBP
View
B+
Retailer 12
-
£3,607 GBP
View
B
Retailer 13
-
£3,676 GBP
View
B
Retailer 14
-
£3,676 GBP
View
Retailer 15
-
£3,693 GBP
View
Price last confirmed 29 days ago
B
Retailer 16
-
£3,795 GBP
View
Retailer 17
-
£3,830 GBP
View
Price last confirmed 11 days ago
Retailer 18
-
£4,046 GBP
View
Price last confirmed 15 days ago
B
Retailer 19
-
£4,084 GBP
View
B
Retailer 20
-
£4,470 GBP
View
B
Retailer 21
-
£5,820 GBP
View
Most Expensive
NZ Jewellers
3a754b14-770e-4023-a4ab-9ee2cf56a05d · Oct 27
£6,383 GBP
$8,544 USD
View
Price last confirmed 10 days ago
21 more retailers have this diamond
Prices start from £2,863 GBPSave up to £2,957 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
£2,863 GBP