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Round|Natural|IGI

0.30ct K SI1 Round Natural Diamond

VG • K/SI1 • IGI 815638728

Shape and cutting style on the report: Round brilliant

Certificate IGI 815638728

Diamond specifications and retailer prices

From $157 AUD
As of November 4, 2026
Save $881 AUD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,039 AUD 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 very-good cut grade and certified by IGI 815638728. Listed at 16 retailers as of November 4, 2026, with prices from $157 to $1,039, a $881 spread on the same certified stone. NZ Jewellers lists it at $1,039. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.30
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.7°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 815638728
Dimensions4.25 × 4.28 × 2.62 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
4.25 mm4.28 mm0.30 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 815638728
Side View
Table 56.0%Crown 33.7°Girdle: STK-THKPavilion 40.3°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 4
Current: $460 AUD|Low: $157 AUD|High: $534 AUD|Avg: $340 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 4$157 AUD
Retailer 6$236 AUD
Retailer 9$256 AUD
Retailer 10$277 AUD
Retailer 2$309 AUD
Retailer 3$336 AUD
Retailer 5$356 AUD
Retailer 8$424 AUD
Retailer 1$460 AUD
Retailer 7$527 AUD

41 data points across 10 retailers

16 retailers$157 AUD to $1,039 AUD

A
Cheapest Retailer
-
$157 AUD
B+
Retailer 2
-
$229 AUD
View
B+
Retailer 3
-
$236 AUD
View
Retailer 4
-
$247 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$256 AUD
View
B+
Retailer 6
-
$277 AUD
View
B+
Retailer 7
-
$287 AUD
View
B+
Retailer 8
-
$309 AUD
View
B+
Retailer 9
-
$336 AUD
View
B+
Retailer 10
-
$356 AUD
View
B+
Retailer 11
-
$414 AUD
View
B+
Retailer 12
-
$424 AUD
View
B+
Retailer 13
-
$460 AUD
View
B
Retailer 14
-
$527 AUD
View
B
Retailer 15
-
$536 AUD
View
Most Expensive
C
NZ Jewellers
3c22a5fe-8b57-4ff8-b232-2a8df9a8565b · Nov 4
$1,039 AUD
$727 USD
View
15 more retailers have this diamond
Prices start from $157 AUDSave up to $881 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
0.30ct Round
$157 AUD