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Radiant|Natural|GIA

1.00ct K SI2 Radiant Natural Diamond

EX • K/SI2 • GIA 6551749682

Certificate GIA 6551749682

Diamond specifications and retailer prices

From £811 GBP
As of November 6, 2026
Save £1,847 GBP (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,658 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551749682. Listed at 14 retailers as of November 5, 2026, with prices from £811 to £2,658, a £1,847 spread on the same certified stone. NZ Jewellers lists it at £2,658. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551749682
Dimensions7.17 × 4.89 × 3.21 mm
L/W Ratio1.47
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Pinpoint
Top View
7.17 mm4.89 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551749682
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,658 GBP|Low: £811 GBP|High: £2,719 GBP|Avg: £1,309 GBP|-2.2%
NZ Jewellers
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 6£811 GBP
Retailer 12£956 GBP
Retailer 10£1,010 GBP
Retailer 9£1,090 GBP
Retailer 5£1,102 GBP
Retailer 13£1,140 GBP
Retailer 4£1,162 GBP
Retailer 7£1,191 GBP
Retailer 2£1,203 GBP
Retailer 3£1,257 GBP
Retailer 8£1,408 GBP
Retailer 11£1,904 GBP
NZ Jewellers£2,658 GBP

27 data points across 13 retailers

14 retailers£811 GBP to £2,658 GBP

A
Cheapest Retailer
-
£811 GBP
A
Retailer 2
-
£956 GBP
View
A
Retailer 3
-
£1,010 GBP
View
A
Retailer 4
-
£1,090 GBP
View
Retailer 5
-
£1,102 GBP
View
Price last confirmed 9 days ago
A
Retailer 6
-
£1,140 GBP
View
A
Retailer 7
-
£1,162 GBP
View
A
Retailer 8
-
£1,191 GBP
View
B+
Retailer 9
-
£1,203 GBP
View
B+
Retailer 10
-
£1,257 GBP
View
Retailer 11
-
£1,343 GBP
View
Price last confirmed 62 days ago
B+
Retailer 12
-
£1,408 GBP
View
B
Retailer 13
-
£1,904 GBP
View
Most Expensive
B
NZ Jewellers
3cb63f75-0e16-4d84-870b-4af904ffe89a · Nov 5
£2,658 GBP
$3,558 USD
View
13 more retailers have this diamond
Prices start from £811 GBPSave up to £1,847 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
£811 GBP