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Round|Lab Grown|IGI

0.40ct J IF Round Lab Grown Diamond

EX • J/IF • IGI LGF5F21511

Certificate IGI LGF5F21511

Diamond specifications and retailer prices

From HK$3,542 HKD
£356 GBP
As of October 31, 2026
Save HK$2,472 HKD (41%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$6,014 HKD at 18carati · As of October 31, 2026
View at 18carati

About this 0.4ct lab-grown round diamond

This 0.4ct lab-grown round sits in the sub-half-carat band, graded J colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LGF5F21511 or F5F21511. Listed at 2 retailers as of October 31, 2026, with prices from HK$3,542 to HK$6,014, a HK$2,472 spread on the same certified stone. 18carati lists it at HK$6,014. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.40
Carat
J
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LGF5F21511
Dimensions4.82 × 4.84 × 2.84 mm
L/W Ratio1.00
Top View
4.82 mm4.84 mm0.40 ctJ / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LGF5F21511
Side View
Table 58.5%CrownGirdlePavilionCulet: NoneDepth 58.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: HK$6,014 HKD|Low: HK$3,389 HKD|High: HK$6,014 HKD|Avg: HK$4,720 HKD|+4.3%
18carati
Retailer 2
October 31, 2026
Retailer 2HK$3,542 HKD
18caratiHK$6,014 HKD

31 data points across 2 retailers

2 retailersHK$3,542 HKD to HK$6,014 HKD

B+
Cheapest Retailer
-
HK$3,542 HKD
£356 GBP
Most Expensive
B
18carati
NK-1511JIF-0040 · Oct 31
HK$6,014 HKD
€730 EUR
View
1 more retailer has this diamond
Prices start from HK$3,542 HKDSave up to HK$2,472 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$3,542 HKD