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Round|Natural|GIA

0.30ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 1398298291

Certificate GIA 1398298291

Diamond specifications and retailer prices

From £133 GBP
As of November 6, 2026
Save £558 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £691 GBP at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.3ct natural round diamond

This 0.3ct natural round sits in the sub-half-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1398298291. Listed at 14 retailers as of November 4, 2026, with prices from £133 to £691, a £558 spread on the same certified stone. NZ Jewellers lists it at £691. 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

0.30
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1398298291
Dimensions4.30 × 4.32 × 2.62 mm
L/W Ratio1.00
Top View
4.30 mm4.32 mm0.30 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1398298291
Side View
Table 60.0%Crown 35°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 60.8%

Caratlytics Score

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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: £163 GBP|Low: £133 GBP|High: £357 GBP|Avg: £237 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£133 GBP
Retailer 1£163 GBP
Retailer 5£174 GBP
Retailer 6£198 GBP
Retailer 2£226 GBP
Retailer 9£249 GBP
Retailer 3£267 GBP
Retailer 8£305 GBP
Retailer 4£351 GBP

39 data points across 9 retailers

14 retailers£133 GBP to £691 GBP

A
Cheapest Retailer
-
£133 GBP
A
Retailer 2
-
£152 GBP
View
A
Retailer 3
-
£163 GBP
View
Retailer 4
-
£164 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£170 GBP
View
A
Retailer 6
-
£174 GBP
View
A
Retailer 7
-
£192 GBP
View
A
Retailer 8
-
£198 GBP
View
B+
Retailer 9
-
£205 GBP
View
B+
Retailer 10
-
£226 GBP
View
B+
Retailer 11
-
£249 GBP
View
B+
Retailer 12
-
£267 GBP
View
B
Retailer 13
-
£351 GBP
View
Most Expensive
B
NZ Jewellers
689cdb75-6d74-4cfe-9070-0fa519f2ed66 · Nov 4
£691 GBP
$930 USD
View
13 more retailers have this diamond
Prices start from £133 GBPSave up to £558 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
0.30ct Round
£133 GBP