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Round|Natural|IGI

0.28ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 818693114

Shape and cutting style on the report: Round brilliant

Certificate IGI 818693114

Diamond specifications and retailer prices

From $121 AUD
As of November 6, 2026
Save $341 AUD (74%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $463 AUD 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 818693114. Listed at 6 retailers as of November 6, 2026, with prices from $121 to $463, a $341 spread on the same certified stone. B2C Jewels lists it at $463. 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 angle35.9°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 818693114
Dimensions4.23 × 4.25 × 2.60 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
4.23 mm4.25 mm0.28 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 818693114
Side View
Table 57.0%Crown 35.9°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 61.4%

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: $463 AUD|Low: $121 AUD|High: $463 AUD|Avg: $301 AUD
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$121 AUD
Retailer 4$207 AUD
Retailer 5$226 AUD
Retailer 3$363 AUD
B2C Jewels$463 AUD

36 data points across 5 retailers

6 retailers$121 AUD to $463 AUD

A
Cheapest Retailer
-
$121 AUD
A
Retailer 2
-
$207 AUD
View
B+
Retailer 3
-
$226 AUD
View
B+
Retailer 4
-
$363 AUD
View
B+
Retailer 5
-
$386 AUD
View
Most Expensive
B
B2C Jewels
36868395 · Nov 6
$463 AUD
$324 USD
View
5 more retailers have this diamond
Prices start from $121 AUDSave up to $341 AUD

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
$121 AUD