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Radiant|Natural|GIA

1.00ct K SI2 Radiant Natural Diamond

EX • K/SI2 • GIA 6552945890

Certificate GIA 6552945890

Diamond specifications and retailer prices

From £719 GBP
As of November 6, 2026
Save £1,637 GBP (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,356 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 6552945890. Listed at 14 retailers as of November 5, 2026, with prices from £719 to £2,356, a £1,637 spread on the same certified stone. NZ Jewellers lists it at £2,356. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552945890
Dimensions7.06 × 5.04 × 3.31 mm
L/W Ratio1.40
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Knot, Needle
Top View
7.06 mm5.04 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552945890
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.6%

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: £2,356 GBP|Low: £719 GBP|High: £2,416 GBP|Avg: £1,239 GBP|-2.5%
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 7, 2026
Retailer 5£719 GBP
Retailer 9£895 GBP
Retailer 8£966 GBP
Retailer 4£978 GBP
Retailer 12£1,003 GBP
Retailer 6£1,066 GBP
Retailer 2£1,092 GBP
Retailer 3£1,114 GBP
Retailer 7£1,248 GBP
Retailer 11£1,486 GBP
Retailer 10£1,763 GBP
NZ Jewellers£2,356 GBP

27 data points across 12 retailers

14 retailers£719 GBP to £2,356 GBP

A
Cheapest Retailer
-
£719 GBP
A
Retailer 2
-
£895 GBP
View
A
Retailer 3
-
£966 GBP
View
Retailer 4
-
£978 GBP
View
Price last confirmed 9 days ago
A
Retailer 5
-
£1,003 GBP
View
A
Retailer 6
-
£1,066 GBP
View
A
Retailer 7
-
£1,092 GBP
View
Retailer 8
-
£1,098 GBP
View
Price last confirmed 39 days ago
A
Retailer 9
-
£1,114 GBP
View
Retailer 10
-
£1,186 GBP
View
Price last confirmed 62 days ago
B+
Retailer 11
-
£1,248 GBP
View
B+
Retailer 12
-
£1,486 GBP
View
B
Retailer 13
-
£1,763 GBP
View
Most Expensive
B
NZ Jewellers
99df62bf-74a2-4c17-adba-a6788f87d649 · Nov 5
£2,356 GBP
$3,153 USD
View
13 more retailers have this diamond
Prices start from £719 GBPSave up to £1,637 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
£719 GBP