Round|Natural|GIA

0.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6552316143

Certificate GIA 6552316143

Diamond specifications and retailer prices

From £101 GBP
As of November 6, 2026
Save £574 GBP (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £675 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552316143. Listed at 17 retailers as of November 4, 2026, with prices from £101 to £675, a £574 spread on the same certified stone. NZ Jewellers lists it at £675. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552316143
Dimensions4.26 × 4.29 × 2.67 mm
L/W Ratio1.01
Top View
4.26 mm4.29 mm0.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552316143
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

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: £675 GBP|Low: £101 GBP|High: £700 GBP|Avg: £238 GBP|-3.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 2£101 GBP
Retailer 4£108 GBP
Retailer 3£149 GBP
Retailer 6£163 GBP
Retailer 7£163 GBP
Retailer 12£166 GBP
Retailer 16£187 GBP
Retailer 8£195 GBP
Retailer 15£201 GBP
Retailer 9£220 GBP
Retailer 11£232 GBP
Retailer 13£245 GBP
Retailer 10£262 GBP
Retailer 5£305 GBP
Retailer 14£343 GBP
NZ Jewellers£675 GBP

22 data points across 16 retailers

17 retailers£101 GBP to £675 GBP

A
Cheapest Retailer
-
£101 GBP
A
Retailer 2
-
£108 GBP
View
A
Retailer 3
-
£133 GBP
View
A
Retailer 4
-
£149 GBP
View
Retailer 5
-
£163 GBP
View
Price last confirmed 10 days ago
Retailer 6
-
£163 GBP
View
Price last confirmed 11 days ago
A
Retailer 7
-
£166 GBP
View
A
Retailer 8
-
£187 GBP
View
Retailer 9
-
£195 GBP
View
Price last confirmed 12 days ago
A
Retailer 10
-
£201 GBP
View
B+
Retailer 11
-
£220 GBP
View
B+
Retailer 12
-
£232 GBP
View
B+
Retailer 13
-
£245 GBP
View
B+
Retailer 14
-
£262 GBP
View
B
Retailer 15
-
£305 GBP
View
B+
Retailer 16
-
£343 GBP
View
Most Expensive
B
NZ Jewellers
6083172f-808f-4613-a647-e8ada6101d18 · Nov 4
£675 GBP
$909 USD
View
16 more retailers have this diamond
Prices start from £101 GBPSave up to £574 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
£101 GBP