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Round|Natural|GIA

0.28ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1333459802

Certificate GIA 1333459802

Diamond specifications and retailer prices

From £103 GBP
As of November 4, 2026
Save £548 GBP (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £652 GBP at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.28ct natural round diamond

This 0.28ct 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 1333459802. Listed at 10 retailers as of November 4, 2026, with prices from £103 to £652, a £548 spread on the same certified stone. NZ Jewellers lists it at £652. 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

0.28
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle31.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1333459802
Dimensions4.28 × 4.25 × 2.56 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
4.28 mm4.25 mm0.28 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1333459802
Side View
Table 60.0%Crown 31.5°Girdle: THN-MEDPavilion 41.8°Culet: NoneDepth 60.1%

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 4
Current: £652 GBP|Low: £102 GBP|High: £652 GBP|Avg: £215 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 6£103 GBP
Retailer 8£144 GBP
Retailer 4£145 GBP
Retailer 11£146 GBP
Retailer 7£155 GBP
Retailer 5£160 GBP
Retailer 10£166 GBP
Retailer 9£194 GBP
Retailer 2£298 GBP
Retailer 3£299 GBP
NZ Jewellers£652 GBP

20 data points across 11 retailers

10 retailers£103 GBP to £652 GBP

A
Cheapest Retailer
-
£103 GBP
A
Retailer 2
-
£144 GBP
View
A
Retailer 3
-
£145 GBP
View
Retailer 4
-
£155 GBP
View
Price last confirmed 8 days ago
Retailer 5
-
£156 GBP
View
Price last confirmed 43 days ago
A
Retailer 6
-
£160 GBP
View
A
Retailer 7
-
£166 GBP
View
B+
Retailer 8
-
£194 GBP
View
B
Retailer 9
-
£298 GBP
View
Most Expensive
B
NZ Jewellers
5b400fe9-67f0-4494-a134-b1020e23b612 · Nov 4
£652 GBP
$877 USD
View
9 more retailers have this diamond
Prices start from £103 GBPSave up to £548 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
0.28ct Round
£103 GBP