Round|Natural|GIA

0.30ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 7478044614

Certificate GIA 7478044614

Diamond specifications and retailer prices

From HK$2,236 HKD
$285 USD
As of October 31, 2026
Save HK$5,237 HKD (70%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$9,470 HKD 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 30, 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
Colour
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 31
Current: HK$3,158 HKD|Low: HK$2,640 HKD|High: HK$5,769 HKD|Avg: HK$4,039 HKD|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 7HK$2,640 HKD
Retailer 1HK$3,158 HKD
Retailer 2HK$3,829 HKD
Retailer 6HK$3,956 HKD
Retailer 4HK$4,127 HKD
Retailer 3HK$5,014 HKD
Retailer 5HK$5,739 HKD

37 data points across 7 retailers

19 retailersHK$2,236 HKD to HK$7,473 HKD

A
Cheapest Retailer
-
HK$2,236 HKD
$285 USD
A
Retailer 2
-
HK$2,330 HKD
$297 USD
View
Retailer 3
-
HK$2,365 HKD
$301 USD
View
Price last confirmed 45 days ago
B+
Retailer 4
-
HK$2,409 HKD
$307 USD
View
B+
Retailer 5
-
HK$2,495 HKD
$318 USD
View
B+
Retailer 6
-
HK$2,589 HKD
$330 USD
View
B+
Retailer 7
-
HK$2,803 HKD
$357 USD
View
B+
Retailer 8
-
HK$2,966 HKD
$378 USD
View
B+
Retailer 9
-
HK$3,013 HKD
$384 USD
View
B
Retailer 10
-
HK$3,158 HKD
£317 GBP
View
B
Retailer 11
-
HK$3,200 HKD
$408 USD
View
B+
Retailer 12
-
HK$3,262 HKD
$416 USD
View
B
Retailer 13
-
HK$3,829 HKD
ZAR 7,884 ZAR
View
Retailer 14
-
HK$3,956 HKD
A$776 AUD
View
Price last confirmed 28 days ago
B
Retailer 15
-
HK$4,127 HKD
€501 EUR
View
B
Retailer 16
-
HK$5,014 HKD
£503 GBP
View
B
Retailer 17
-
HK$5,739 HKD
£576 GBP
View
B
Retailer 18
-
HK$7,473 HKD
CA$1,323 CAD
View
Most Expensive
NZ Jewellers
ad9006a4-52cd-4368-908c-5c84af0fb9fd · Oct 29
HK$9,470 HKD
$1,207 USD
View
Price under review
18 more retailers have this diamond
Prices start from HK$2,236 HKDSave up to HK$5,237 HKD

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
HK$2,236 HKD