Round|Natural|GIA

0.30ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 7478044614

Certificate GIA 7478044614

Diamond specifications and retailer prices

From $399 CAD
$285 USD
As of October 28, 2026
Save $934 CAD (70%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,689 CAD at NZ Jewellers · As of October 29, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7478044614. Listed at 19 retailers as of October 28, 2026, with a 234% 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7478044614
Dimensions4.29 × 4.27 × 2.62 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Top View
4.29 mm4.27 mm0.30 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7478044614
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.3%

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: Oct 28
Current: $683 CAD|Low: $470 CAD|High: $1,029 CAD|Avg: $719 CAD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 7$471 CAD
Retailer 3$563 CAD
Retailer 1$683 CAD
Retailer 6$706 CAD
Retailer 4$736 CAD
Retailer 2$894 CAD
Retailer 5$1,024 CAD

37 data points across 7 retailers

19 retailers$399 CAD to $1,333 CAD

A
Cheapest Retailer
-
$399 CAD
$285 USD
A
Retailer 2
-
$416 CAD
$297 USD
View
Retailer 3
-
$422 CAD
$301 USD
View
Price last confirmed 44 days ago
B+
Retailer 4
-
$430 CAD
$307 USD
View
B+
Retailer 5
-
$445 CAD
$318 USD
View
B+
Retailer 6
-
$462 CAD
$330 USD
View
B+
Retailer 7
-
$500 CAD
$357 USD
View
B+
Retailer 8
-
$529 CAD
$378 USD
View
B+
Retailer 9
-
$537 CAD
$384 USD
View
B
Retailer 10
-
$563 CAD
£317 GBP
View
B
Retailer 11
-
$571 CAD
$408 USD
View
B+
Retailer 12
-
$582 CAD
$416 USD
View
B
Retailer 13
-
$683 CAD
ZAR 7,884 ZAR
View
Retailer 14
-
$706 CAD
A$776 AUD
View
Price last confirmed 26 days ago
B
Retailer 15
-
$736 CAD
€501 EUR
View
B
Retailer 16
-
$894 CAD
£503 GBP
View
B
Retailer 17
-
$1,024 CAD
£576 GBP
View
B
Retailer 18
-
$1,333 CAD
View
Most Expensive
NZ Jewellers
ad9006a4-52cd-4368-908c-5c84af0fb9fd · Oct 29
$1,689 CAD
$1,207 USD
View
Price under review
18 more retailers have this diamond
Prices start from $399 CADSave up to $934 CAD

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
$399 CAD