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Round|Natural|GIA

0.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6481766346

Certificate GIA 6481766346

Diamond specifications and retailer prices

From $283 AUD
As of October 31, 2026
Save $651 AUD (70%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,831 AUD at NZ Jewellers · As of September 24, 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 6481766346. Listed at 19 retailers as of October 31, 2026, with a 230% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6481766346
Dimensions4.31 × 4.28 × 2.64 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
4.31 mm4.28 mm0.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6481766346
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.3%

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: Oct 31
Current: $813 AUD|Low: $281 AUD|High: $944 AUD|Avg: $615 AUD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$283 AUD
Retailer 9$386 AUD
Retailer 6$407 AUD
Retailer 2$426 AUD
Retailer 3$503 AUD
Retailer 5$630 AUD
Retailer 4$676 AUD
Retailer 1$813 AUD
Retailer 7$934 AUD

30 data points across 9 retailers

19 retailers$283 AUD to $934 AUD

A
Cheapest Retailer
-
$283 AUD
A
Retailer 2
-
$386 AUD
View
B+
Retailer 3
-
$404 AUD
View
Retailer 4
-
$404 AUD
View
Price last confirmed 44 days ago
B+
Retailer 5
-
$407 AUD
View
B+
Retailer 6
-
$426 AUD
View
Retailer 7
-
$436 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$451 AUD
View
B+
Retailer 9
-
$503 AUD
View
Retailer 10
-
$544 AUD
View
Price last confirmed 45 days ago
B
Retailer 11
-
$590 AUD
View
B+
Retailer 12
-
$630 AUD
View
B
Retailer 13
-
$669 AUD
View
B
Retailer 14
-
$676 AUD
View
B
Retailer 15
-
$699 AUD
View
B
Retailer 16
-
$813 AUD
View
B
Retailer 17
-
$934 AUD
View
Retailer 18
-
$1,831 AUD
View
Price under review
Most Expensive
NZ Jewellers
f90fb563-a66a-48c8-abe2-cffc34c3cde4 · Sep 24
$1,831 AUD
$1,282 USD
View
Price under review
18 more retailers have this diamond
Prices start from $283 AUDSave up to $651 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
$283 AUD