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Radiant|Natural|GIA

1.00ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 2557969510

Certificate GIA 2557969510

Diamond specifications and retailer prices

From £1,108 GBP
As of November 4, 2026
Save £1,820 GBP (62%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,928 GBP at NZ Jewellers · As of November 3, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557969510. Listed at 13 retailers as of November 3, 2026, with prices from £1,108 to £2,928, a £1,820 spread on the same certified stone. NZ Jewellers lists it at £2,928. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557969510
Dimensions6.67 × 4.95 × 3.52 mm
L/W Ratio1.35
Girdle conditionPolished
Culet sizeNone
Key to symbols
Knot, Crystal, Pinpoint
Top View
6.67 mm4.95 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557969510
Side View
Table 66.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 71.1%

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 4
Current: £2,928 GBP|Low: £1,108 GBP|High: £3,008 GBP|Avg: £1,524 GBP|-2.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 4£1,108 GBP
Retailer 7£1,168 GBP
Retailer 10£1,201 GBP
Retailer 12£1,201 GBP
Retailer 3£1,256 GBP
Retailer 9£1,259 GBP
Retailer 5£1,331 GBP
Retailer 11£1,385 GBP
Retailer 2£1,465 GBP
Retailer 8£1,633 GBP
Retailer 6£2,097 GBP
NZ Jewellers£2,928 GBP

28 data points across 12 retailers

13 retailers£1,108 GBP to £2,928 GBP

A
Cheapest Retailer
-
£1,108 GBP
Final sale: no returns
A
Retailer 2
-
£1,168 GBP
View
B+
Retailer 3
-
£1,201 GBP
View
Retailer 4
-
£1,201 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£1,256 GBP
View
B+
Retailer 6
-
£1,259 GBP
View
B+
Retailer 7
-
£1,331 GBP
View
B+
Retailer 8
-
£1,385 GBP
View
B+
Retailer 9
-
£1,465 GBP
View
Retailer 10
-
£1,609 GBP
View
Price last confirmed 33 days ago
B
Retailer 11
-
£1,633 GBP
View
B
Retailer 12
-
£2,097 GBP
View
Most Expensive
B
NZ Jewellers
7519b7ca-5f99-4651-a6d7-6de2b71c7dc2 · Nov 3
£2,928 GBP
$3,919 USD
View
12 more retailers have this diamond
Prices start from £1,108 GBPSave up to £1,820 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
£1,108 GBP