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0.40ct F SI2 Round Lab Grown Diamond

EX • F/SI2 • IGI LG290500

Certificate IGI LG290500

Diamond specifications and retailer prices

From HK$3,138 HKD
$400 USD
As of November 2, 2026
Save HK$2,598 HKD (45%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$5,736 HKD at Fonder Diamond · As of October 31, 2026
View at Fonder Diamond

About this 0.4ct lab-grown round diamond

This 0.4ct lab-grown round sits in the sub-half-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG290500 or 290500. Listed at 2 retailers as of October 31, 2026, with prices from HK$3,138 to HK$5,736, a HK$2,598 spread on the same certified stone. Fonder Diamond lists it at HK$5,736. 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

0.40
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG290500
Dimensions4.73 × 4.71 × 2.90 mm
L/W Ratio1.00
Top View
4.73 mm4.71 mm0.40 ctF / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG290500
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.4%

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: Nov 2
Current: HK$5,736 HKD|Low: HK$3,138 HKD|High: HK$12,663 HKD|Avg: HK$5,863 HKD|-0.4%
Fonder Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 13, 2026
Retailer 2HK$3,138 HKD
Retailer 3HK$3,881 HKD
Retailer 5HK$4,315 HKD
Retailer 6HK$5,420 HKD
Fonder DiamondHK$5,736 HKD
Retailer 4HK$12,663 HKD

4 data points across 6 retailers

2 retailersHK$3,138 HKD to HK$5,736 HKD

B+
Cheapest Retailer
-
HK$3,138 HKD
$400 USD
Most Expensive
B
Fonder Diamond
96961304 · Oct 31
HK$5,736 HKD
SGD 988 SGD
View
1 more retailer has this diamond
Prices start from HK$3,138 HKDSave up to HK$2,598 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+
0.40ct Round
HK$3,138 HKD