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Radiant|Natural|GIA

1.21ct G SI2 Radiant Natural Diamond

EX • G/SI2 • GIA 6551273212

Certificate GIA 6551273212

Diamond specifications and retailer prices

From £2,957 GBP
CA$5,503 CAD
As of October 30, 2026
Save £454 GBP (13%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,411 GBP at The Diamond Guys · As of November 2, 2026
View at The Diamond Guys

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 6551273212. Listed at 3 retailers as of October 30, 2026, with prices from £2,957 to £3,411, a £454 spread on the same certified stone. The Diamond Guys lists it at £3,411. 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 6551273212
Dimensions7.24 × 5.47 × 3.60 mm
L/W Ratio1.32
Culet sizeNone
Top View
7.24 mm5.47 mm1.21 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551273212
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.7%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £2,957 GBP|Low: £2,576 GBP|High: £3,999 GBP|Avg: £3,170 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
The Diamond Guys
October 15, 2026
Retailer 2£2,576 GBP
Retailer 11£2,594 GBP
Retailer 7£2,661 GBP
Retailer 13£2,922 GBP
Retailer 1£2,957 GBP
Retailer 8£3,070 GBP
Retailer 5£3,173 GBP
Retailer 9£3,217 GBP
Retailer 4£3,306 GBP
Retailer 15£3,306 GBP
Retailer 3£3,411 GBP
The Diamond Guys£3,411 GBP
Retailer 14£3,535 GBP
Retailer 10£3,656 GBP
Retailer 12£3,846 GBP
Retailer 6£3,962 GBP

36 data points across 16 retailers

3 retailers£2,957 GBP to £3,411 GBP

B+
Cheapest Retailer
-
£2,957 GBP
CA$5,503 CAD
B+
Retailer 2
-
£3,070 GBP
$4,114 USD
View
Most Expensive
B
The Diamond Guys
1992899755 · Nov 2
£3,411 GBP
$4,571 USD
View
2 more retailers have this diamond
Prices start from £2,957 GBPSave up to £454 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
£2,957 GBP