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3.40ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6431989398

Certificate GIA 6431989398

Diamond specifications and retailer prices

From HK$236,595 HKD
$30,156 USD
As of October 30, 2026
Save HK$58,534 HKD (20%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$295,129 HKD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 3.4ct natural round diamond

This 3.4ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6431989398. Listed at 4 retailers as of October 30, 2026, with prices from HK$236,595 to HK$295,129, a HK$58,534 spread on the same certified stone. 77 Diamonds lists it at HK$295,129. 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

3.40
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6431989398
Dimensions9.64 × 9.59 × 5.94 mm
L/W Ratio1.01
Top View
9.64 mm9.59 mm3.40 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6431989398
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.9%

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 30
Current: HK$295,129 HKD|Low: HK$236,595 HKD|High: HK$310,908 HKD|Avg: HK$270,013 HKD|-2.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 3HK$236,595 HKD
Retailer 4HK$241,946 HKD
Retailer 2HK$253,523 HKD
77 DiamondsHK$295,129 HKD

37 data points across 4 retailers

4 retailersHK$236,595 HKD to HK$295,129 HKD

B+
Cheapest Retailer
-
HK$236,595 HKD
$30,156 USD
B+
Retailer 2
-
HK$241,946 HKD
$30,838 USD
View
B
Retailer 3
-
HK$253,523 HKD
$32,314 USD
View
Most Expensive
B
77 Diamonds
RBZKJYCD5HV · Oct 30
HK$295,129 HKD
£29,619 GBP
View
3 more retailers have this diamond
Prices start from HK$236,595 HKDSave up to HK$58,534 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+
3.40ct Round
HK$236,595 HKD