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Radiant|Natural|GIA

1.05ct J SI2 Radiant Natural Diamond

ID • J/SI2 • GIA 1539885570

Certificate GIA 1539885570

Diamond specifications and retailer prices

From £889 GBP
As of November 6, 2026
Save £1,058 GBP (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,755 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.05ct natural radiant diamond

This 1.05ct natural radiant sits in the classic one-carat band, graded J 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 1539885570. Listed at 15 retailers as of November 4, 2026, with a 119% 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

1.05
Carat
J
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle37.3°
OriginNatural
Grading LabGIA
CertificateGIA 1539885570
Dimensions7.06 × 5.21 × 3.47 mm
L/W Ratio1.36
Girdle conditionPolished
Top View
7.06 mm5.21 mm1.05 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539885570
Side View
Table 66.0%CrownGirdle: MED-STKPavilion 37.3°Culet: NoneDepth 66.7%

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 6
Current: £1,214 GBP|Low: £787 GBP|High: £2,002 GBP|Avg: £1,211 GBP|-0.8%
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
November 7, 2026
Retailer 3£889 GBP
Retailer 9£919 GBP
Retailer 5£934 GBP
Retailer 12£987 GBP
Retailer 11£1,036 GBP
Retailer 6£1,039 GBP
Retailer 2£1,076 GBP
Retailer 8£1,157 GBP
Retailer 4£1,186 GBP
Retailer 1£1,214 GBP
Retailer 7£1,523 GBP
Retailer 13£1,790 GBP
Retailer 10£1,947 GBP

35 data points across 13 retailers

15 retailers£889 GBP to £1,947 GBP

A
Cheapest Retailer
-
£889 GBP
A
Retailer 2
-
£919 GBP
View
Final sale: no returns
Retailer 3
-
£934 GBP
View
Price last confirmed 10 days ago
A
Retailer 4
-
£987 GBP
View
A
Retailer 5
-
£1,036 GBP
View
A
Retailer 6
-
£1,039 GBP
View
A
Retailer 7
-
£1,076 GBP
View
A
Retailer 8
-
£1,157 GBP
View
A
Retailer 9
-
£1,186 GBP
View
A
Retailer 10
-
£1,214 GBP
View
B+
Retailer 11
-
£1,281 GBP
View
B+
Retailer 12
-
£1,523 GBP
View
B+
Retailer 13
-
£1,790 GBP
View
B
Retailer 14
-
£1,947 GBP
View
Most Expensive
NZ Jewellers
65b92b3f-bbc3-4d26-8420-a3a0843836c6 · Sep 25
£2,755 GBP
$3,687 USD
View
Price last confirmed 42 days ago
14 more retailers have this diamond
Prices start from £889 GBPSave up to £1,058 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
1.05ct Radiant
£889 GBP