Round|Natural|GIA

0.30ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6421167345

Certificate GIA 6421167345

Diamond specifications and retailer prices

From HK$3,130 HKD
$399 USD
As of October 31, 2026
Save HK$4,532 HKD (59%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: HK$7,662 HKD at MOH London · As of November 1, 2026
View at MOH London

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 6421167345. Listed at 28 retailers as of October 31, 2026, with prices from HK$3,130 to HK$7,662, a HK$4,532 spread on the same certified stone. MOH London lists it at HK$7,662. 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°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6421167345
Dimensions4.29 × 4.26 × 2.67 mm
L/W Ratio1.01
Top View
4.29 mm4.26 mm0.30 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421167345
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$7,662 HKD|Low: HK$3,130 HKD|High: HK$7,752 HKD|Avg: HK$4,944 HKD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 9HK$3,130 HKD
Retailer 6HK$3,232 HKD
Retailer 10HK$3,638 HKD
Retailer 3HK$4,056 HKD
Retailer 7HK$4,449 HKD
Retailer 2HK$5,042 HKD
Retailer 4HK$5,142 HKD
Retailer 8HK$5,312 HKD
Retailer 5HK$6,732 HKD
MOH LondonHK$7,662 HKD

42 data points across 10 retailers

28 retailersHK$3,130 HKD to HK$7,662 HKD

Retailer 1
-
HK$3,005 HKD
$383 USD
Price last confirmed 24 days ago
Retailer 2
-
HK$3,005 HKD
$383 USD
View
Price last confirmed 44 days ago
Retailer 3
-
HK$3,005 HKD
$383 USD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
HK$3,130 HKD
$399 USD
View
Retailer 5
-
HK$3,136 HKD
$400 USD
View
Price last confirmed 76 days ago
B
Retailer 6
-
HK$3,232 HKD
$412 USD
View
Retailer 7
-
HK$3,232 HKD
$412 USD
View
Price last confirmed 16 days ago
Retailer 8
-
HK$3,350 HKD
$427 USD
View
Price last confirmed 32 days ago
B
Retailer 9
-
HK$3,844 HKD
$490 USD
View
B
Retailer 10
-
HK$3,844 HKD
$490 USD
View
B
Retailer 11
-
HK$3,923 HKD
$500 USD
View
B
Retailer 12
-
HK$3,940 HKD
$502 USD
View
Retailer 13
-
HK$4,048 HKD
$516 USD
View
Price last confirmed 22 days ago
Retailer 14
-
HK$4,048 HKD
$516 USD
View
Price last confirmed 40 days ago
Retailer 15
-
HK$4,048 HKD
$516 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
HK$4,048 HKD
$516 USD
View
B
Retailer 17
-
HK$4,056 HKD
£407 GBP
View
B
Retailer 18
-
HK$4,449 HKD
$567 USD
View
B
Retailer 19
-
HK$5,041 HKD
$643 USD
View
B
Retailer 20
-
HK$5,042 HKD
€612 EUR
View
B
Retailer 21
-
HK$5,142 HKD
ZAR 10,588 ZAR
View
Retailer 22
-
HK$5,312 HKD
A$1,042 AUD
View
Price last confirmed 28 days ago
B
Retailer 23
-
HK$6,732 HKD
£676 GBP
View
Most Expensive
B
MOH London
1F2E23EE1 · Nov 1
HK$7,662 HKD
£769 GBP
View
23 more retailers have this diamond
Prices start from HK$3,130 HKDSave up to HK$4,532 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.

B+
0.30ct Round
HK$3,130 HKD