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Round|Lab Grown|IGI

3.90ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG830686655

Shape and cutting style on the report: Round brilliant

Certificate IGI LG830686655

Diamond specifications and retailer prices

From HK$3,225 HKD
$411 USD
As of October 26, 2026
Save HK$12,429 HKD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$15,925 HKD at Michael Trio · As of October 13, 2026
View at Michael Trio

About this 3.9ct lab-grown round diamond

This 3.9ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG830686655 or 830686655. Listed at 10 retailers as of October 25, 2026, with a 385% 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

3.90
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830686655
Dimensions10.06 × 10.16 × 6.13 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.06 mm10.16 mm3.90 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830686655
Side View
Table 58.0%Crown 32.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.6%

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 26
Current: HK$15,925 HKD|Low: HK$3,178 HKD|High: HK$16,651 HKD|Avg: HK$8,992 HKD|-0.8%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 8HK$3,225 HKD
Retailer 6HK$3,617 HKD
Retailer 4HK$5,139 HKD
Retailer 3HK$5,375 HKD
Retailer 2HK$6,393 HKD
Retailer 10HK$7,234 HKD
Retailer 7HK$11,219 HKD
Retailer 9HK$12,859 HKD
Retailer 5HK$15,654 HKD
Michael TrioHK$15,925 HKD

32 data points across 10 retailers

10 retailersHK$3,225 HKD to HK$15,654 HKD

A
Cheapest Retailer
-
HK$3,225 HKD
$411 USD
A
Retailer 2
-
HK$3,617 HKD
$461 USD
View
A
Retailer 3
-
HK$5,139 HKD
$655 USD
View
A
Retailer 4
-
HK$5,375 HKD
£539 GBP
View
A
Retailer 5
-
HK$6,393 HKD
€776 EUR
View
A
Retailer 6
-
HK$7,234 HKD
$922 USD
View
B+
Retailer 7
-
HK$11,219 HKD
$1,430 USD
View
B+
Retailer 8
-
HK$12,859 HKD
$1,639 USD
View
B+
Retailer 9
-
HK$15,654 HKD
£1,571 GBP
View
Most Expensive
Michael Trio
1835554667 · Oct 13
HK$15,925 HKD
SGD 2,743 SGD
View
Price last confirmed 18 days ago
9 more retailers have this diamond
Prices start from HK$3,225 HKDSave up to HK$12,429 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
3.90ct Round
HK$3,225 HKD