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Radiant|Natural|GIA

1.21ct G SI2 Radiant Natural Diamond

EX • G/SI2 • GIA 2245052938

Certificate GIA 2245052938

Diamond specifications and retailer prices

From £1,602 GBP
SGD 2,901 SGD
As of October 31, 2026
Save £1,515 GBP (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,117 GBP at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245052938. Listed at 11 retailers as of October 31, 2026, with prices from £1,602 to £3,117, a £1,515 spread on the same certified stone. Helzberg Diamonds lists it at £3,117. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2245052938
Dimensions7.39 × 5.46 × 3.69 mm
L/W Ratio1.35
Culet sizeNone
Top View
7.39 mm5.46 mm1.21 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245052938
Side View
Table 69.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 67.6%

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: Oct 31
Current: £3,117 GBP|Low: £1,602 GBP|High: £3,307 GBP|Avg: £2,250 GBP|-5.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 5£1,602 GBP
Retailer 9£1,725 GBP
Retailer 7£1,739 GBP
Retailer 8£1,740 GBP
Retailer 4£1,880 GBP
Retailer 11£1,894 GBP
Retailer 6£2,051 GBP
Retailer 10£2,150 GBP
Retailer 2£2,240 GBP
Retailer 3£2,915 GBP
Helzberg Diamonds£3,117 GBP

38 data points across 11 retailers

11 retailers£1,602 GBP to £3,117 GBP

A
Cheapest Retailer
-
£1,602 GBP
SGD 2,901 SGD
A
Retailer 2
-
£1,725 GBP
$2,311 USD
View
A
Retailer 3
-
£1,739 GBP
$2,330 USD
View
A
Retailer 4
-
£1,740 GBP
$2,331 USD
View
A
Retailer 5
-
£1,880 GBP
View
A
Retailer 6
-
£1,894 GBP
SGD 3,429 SGD
View
A
Retailer 7
-
£2,051 GBP
$2,748 USD
View
A
Retailer 8
-
£2,150 GBP
$2,881 USD
View
B+
Retailer 9
-
£2,240 GBP
€2,858 EUR
View
B+
Retailer 10
-
£2,915 GBP
$3,906 USD
View
Most Expensive
B+
Helzberg Diamonds
XZRIIKLGLIPJO · Nov 1
£3,117 GBP
$4,177 USD
View
10 more retailers have this diamond
Prices start from £1,602 GBPSave up to £1,515 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
£1,602 GBP