Radiant|Natural|GIA

1.02ct G SI1 Radiant Natural Diamond

ID • G/SI1 • GIA 1559406456

Certificate GIA 1559406456

Diamond specifications and retailer prices

From £1,981 GBP
As of November 4, 2026
Save £2,083 GBP (51%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,064 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.02ct natural radiant diamond

This 1.02ct natural radiant sits in the classic one-carat band, graded G 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 1559406456. Listed at 14 retailers as of November 4, 2026, with prices from £1,981 to £4,064, a £2,083 spread on the same certified stone. NZ Jewellers lists it at £4,064. 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

1.02
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.66°
Pavilion angle35.59°
OriginNatural
Grading LabGIA
CertificateGIA 1559406456
Dimensions6.65 × 5.11 × 3.45 mm
L/W Ratio1.30
Girdle conditionThick
Key to symbols
Cloud, Crystal, Needle
Top View
6.65 mm5.11 mm1.02 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559406456
Side View
Table 68.0%Crown 49.66°Girdle: SLI-POLPavilion 35.59°Culet: NoneDepth 67.6%

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: Nov 4
Current: £4,064 GBP|Low: £1,964 GBP|High: £4,064 GBP|Avg: £2,625 GBP|+1.3%
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 11£1,981 GBP
Retailer 6£2,090 GBP
Retailer 3£2,176 GBP
Retailer 7£2,208 GBP
Retailer 2£2,267 GBP
Retailer 4£2,406 GBP
Retailer 5£2,413 GBP
Retailer 8£2,716 GBP
Retailer 9£2,832 GBP
Retailer 10£3,777 GBP
NZ Jewellers£4,064 GBP

23 data points across 11 retailers

14 retailers£1,981 GBP to £4,064 GBP

B+
Cheapest Retailer
-
£1,981 GBP
Retailer 2
-
£2,055 GBP
View
Price last confirmed 40 days ago
B+
Retailer 3
-
£2,090 GBP
View
Retailer 4
-
£2,103 GBP
View
Price last confirmed 10 days ago
B+
Retailer 5
-
£2,176 GBP
View
B+
Retailer 6
-
£2,208 GBP
View
B+
Retailer 7
-
£2,267 GBP
View
Retailer 8
-
£2,293 GBP
View
Price last confirmed 38 days ago
B+
Retailer 9
-
£2,406 GBP
View
B+
Retailer 10
-
£2,413 GBP
View
B+
Retailer 11
-
£2,716 GBP
View
B
Retailer 12
-
£2,832 GBP
View
B
Retailer 13
-
£3,777 GBP
View
Most Expensive
B
NZ Jewellers
4a1feb90-d5f7-4be9-8a11-bb382d051b86 · Nov 5
£4,064 GBP
$5,440 USD
View
13 more retailers have this diamond
Prices start from £1,981 GBPSave up to £2,083 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+
1.02ct Radiant
£1,981 GBP