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Radiant|Natural|GIA

1.00ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 2566373367

Certificate GIA 2566373367

Diamond specifications and retailer prices

From £1,090 GBP
As of November 6, 2026
Save £2,460 GBP (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,550 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded J 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 2566373367. Listed at 11 retailers as of November 5, 2026, with prices from £1,090 to £3,550, a £2,460 spread on the same certified stone. NZ Jewellers lists it at £3,550. 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

1.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566373367
Dimensions6.48 × 4.98 × 3.56 mm
L/W Ratio1.30
Girdle conditionThick to Very Thick
Key to symbols
Feather, Crystal
Top View
6.48 mm4.98 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566373367
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.4%

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: £3,550 GBP|Low: £1,080 GBP|High: £3,550 GBP|Avg: £1,701 GBP|+12.2%
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 10£1,090 GBP
Retailer 4£1,095 GBP
Retailer 3£1,160 GBP
Retailer 11£1,360 GBP
Retailer 5£1,412 GBP
Retailer 9£1,455 GBP
Retailer 6£1,515 GBP
Retailer 8£1,523 GBP
Retailer 2£1,811 GBP
Retailer 7£2,543 GBP
NZ Jewellers£3,550 GBP

31 data points across 11 retailers

11 retailers£1,090 GBP to £3,550 GBP

A
Cheapest Retailer
-
£1,090 GBP
A
Retailer 2
-
£1,095 GBP
View
A
Retailer 3
-
£1,160 GBP
View
Final sale: no returns
B+
Retailer 4
-
£1,360 GBP
View
B+
Retailer 5
-
£1,412 GBP
View
B+
Retailer 6
-
£1,455 GBP
View
B+
Retailer 7
-
£1,515 GBP
View
B+
Retailer 8
-
£1,523 GBP
View
B+
Retailer 9
-
£1,811 GBP
View
B
Retailer 10
-
£2,543 GBP
View
Most Expensive
C
NZ Jewellers
147dd911-f053-4819-bf74-292a933c0f11 · Nov 5
£3,550 GBP
$4,752 USD
View
10 more retailers have this diamond
Prices start from £1,090 GBPSave up to £2,460 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
1.00ct Radiant
£1,090 GBP