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Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 5241058000

Certificate GIA 5241058000

Diamond specifications and retailer prices

From £1,473 GBP
As of November 5, 2026
Save £2,695 GBP (65%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,167 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded I 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 5241058000. Listed at 10 retailers as of November 5, 2026, with prices from £1,473 to £4,167, a £2,695 spread on the same certified stone. NZ Jewellers lists it at £4,167. 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

1.20
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Pavilion angle62.16°
OriginNatural
Grading LabGIA
CertificateGIA 5241058000
Dimensions7.10 × 5.29 × 3.69 mm
L/W Ratio1.34
Key to symbols
Twinning Wisp, Crystal, Needle, Indented Natural
Top View
7.10 mm5.29 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5241058000
Side View
Table 62.0%CrownGirdle: MED-STKPavilion 62.16°Culet: NoneDepth 69.8%

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 5
Current: £4,167 GBP|Low: £1,473 GBP|High: £4,533 GBP|Avg: £2,601 GBP|-8.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 6£1,473 GBP
Retailer 4£1,934 GBP
Retailer 7£1,993 GBP
Retailer 5£2,043 GBP
Retailer 2£2,070 GBP
Retailer 8£2,173 GBP
Retailer 10£2,383 GBP
Retailer 3£2,733 GBP
Retailer 11£3,059 GBP
Retailer 9£3,520 GBP
NZ Jewellers£4,167 GBP

41 data points across 11 retailers

10 retailers£1,473 GBP to £4,167 GBP

A
Cheapest Retailer
-
£1,473 GBP
B+
Retailer 2
-
£1,934 GBP
View
B+
Retailer 3
-
£1,993 GBP
View
B+
Retailer 4
-
£2,043 GBP
View
B+
Retailer 5
-
£2,070 GBP
View
B+
Retailer 6
-
£2,173 GBP
View
B+
Retailer 7
-
£2,383 GBP
View
B
Retailer 8
-
£3,059 GBP
View
B
Retailer 9
-
£3,520 GBP
View
Most Expensive
B
NZ Jewellers
685ed388-b886-41e9-8558-cd2428aff669 · Nov 5
£4,167 GBP
$5,578 USD
View
9 more retailers have this diamond
Prices start from £1,473 GBPSave up to £2,695 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
1.20ct Radiant
£1,473 GBP