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0.28ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 818693069

Shape and cutting style on the report: Round brilliant

Certificate IGI 818693069

Diamond specifications and retailer prices

From €75 EUR
As of November 6, 2026
Save €213 EUR (74%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €288 EUR at B2C Jewels · As of November 6, 2026
View at B2C Jewels

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 IGI 818693069. Listed at 5 retailers as of November 6, 2026, with prices from €75 to €288, a €213 spread on the same certified stone. B2C Jewels lists it at €288. 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
FluorescenceNone
Crown angle33.6°
Pavilion angle41.3°
OriginNatural
Grading LabIGI
CertificateIGI 818693069
Dimensions4.25 × 4.29 × 2.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
4.25 mm4.29 mm0.28 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 818693069
Side View
Table 58.0%Crown 33.6°Girdle: MediumPavilion 41.3°Culet: NoneDepth 61.0%

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: €288 EUR|Low: €75 EUR|High: €288 EUR|Avg: €183 EUR
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2€75 EUR
Retailer 4€129 EUR
Retailer 5€139 EUR
Retailer 3€223 EUR
B2C Jewels€288 EUR

37 data points across 5 retailers

5 retailers€75 EUR to €288 EUR

A
Cheapest Retailer
-
€75 EUR
A
Retailer 2
-
€129 EUR
View
B+
Retailer 3
-
€139 EUR
View
B+
Retailer 4
-
€223 EUR
View
Most Expensive
B
B2C Jewels
36868396 · Nov 6
€288 EUR
$323 USD
View
4 more retailers have this diamond
Prices start from €75 EURSave up to €213 EUR

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
€75 EUR