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Marquise|Lab Grown|IGI

3.09ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG837653972

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG837653972

Diamond specifications and retailer prices

From HK$3,036 HKD
$387 USD
As of October 31, 2026
Save HK$3,222 HKD (51%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$17,143 HKD at Rare Carat · As of October 14, 2026
View at Rare Carat

About this 3.09ct lab-grown marquise diamond

This 3.09ct lab-grown marquise 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 LG837653972 or 837653972. Listed at 3 retailers as of October 31, 2026, with a 106% 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

3.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837653972
Dimensions14.69 × 7.83 × 4.78 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.69 mm7.83 mm3.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837653972
Side View
Table 62.0%Crown 36.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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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$6,258 HKD|Low: HK$3,036 HKD|High: HK$6,578 HKD|Avg: HK$5,558 HKD|-3.5%
Retailer 1
Retailer 2
October 31, 2026
Retailer 2HK$3,036 HKD
Retailer 1HK$6,258 HKD

34 data points across 2 retailers

3 retailersHK$3,036 HKD to HK$6,258 HKD

A
Cheapest Retailer
-
HK$3,036 HKD
$387 USD
Final sale: no returns
A
Retailer 2
-
HK$6,258 HKD
£628 GBP
View
Most Expensive
Rare Carat
837653972 · Oct 14
HK$17,143 HKD
$2,185 USD
View
Price last confirmed 17 days ago
2 more retailers have this diamond
Prices start from HK$3,036 HKDSave up to HK$3,222 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
3.09ct Marquise
HK$3,036 HKD