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Radiant|Natural|GIA

1.00ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 6565543343

Certificate GIA 6565543343

Diamond specifications and retailer prices

From £1,138 GBP
As of November 6, 2026
Save £2,049 GBP (64%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,187 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 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 6565543343. Listed at 11 retailers as of November 5, 2026, with prices from £1,138 to £3,187, a £2,049 spread on the same certified stone. NZ Jewellers lists it at £3,187. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565543343
Dimensions6.86 × 5.09 × 3.41 mm
L/W Ratio1.35
Girdle conditionThick to Very Thick
Key to symbols
Cloud
Top View
6.86 mm5.09 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565543343
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.9%

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: £3,187 GBP|Low: £1,128 GBP|High: £3,412 GBP|Avg: £1,813 GBP|-6.6%
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£1,138 GBP
Retailer 4£1,147 GBP
Retailer 3£1,216 GBP
Retailer 11£1,425 GBP
Retailer 5£1,479 GBP
Retailer 8£1,525 GBP
Retailer 6£1,588 GBP
Retailer 7£1,595 GBP
Retailer 2£1,898 GBP
Retailer 9£2,671 GBP
NZ Jewellers£3,187 GBP

30 data points across 11 retailers

11 retailers£1,138 GBP to £3,187 GBP

A
Cheapest Retailer
-
£1,138 GBP
A
Retailer 2
-
£1,147 GBP
View
A
Retailer 3
-
£1,216 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,425 GBP
View
A
Retailer 5
-
£1,479 GBP
View
B+
Retailer 6
-
£1,525 GBP
View
B+
Retailer 7
-
£1,588 GBP
View
B+
Retailer 8
-
£1,595 GBP
View
B+
Retailer 9
-
£1,898 GBP
View
B
Retailer 10
-
£2,671 GBP
View
Most Expensive
B
NZ Jewellers
33f5e68e-b589-4ad0-94de-49f37a5de311 · Nov 5
£3,187 GBP
$4,266 USD
View
10 more retailers have this diamond
Prices start from £1,138 GBPSave up to £2,049 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
£1,138 GBP