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Marquise|Lab Grown|IGI

1.05ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG851626026

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG851626026

Diamond specifications and retailer prices

From HK$1,342 HKD
As of November 5, 2026
Save HK$3,522 HKD (72%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$4,864 HKD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG851626026 or 851626026. Listed at 3 retailers as of November 4, 2026, with prices from HK$1,342 to HK$4,864, a HK$3,522 spread on the same certified stone. Brilliant Earth lists it at HK$4,864. 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

1.05
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851626026
Dimensions10.05 × 5.35 × 3.40 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
10.05 mm5.35 mm1.05 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851626026
Side View
Table 60.0%Crown 36.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: HK$4,864 HKD|Low: HK$1,342 HKD|High: HK$4,864 HKD|Avg: HK$3,256 HKD
Brilliant Earth
Retailer 2
Retailer 3
November 6, 2026
Retailer 3HK$1,342 HKD
Retailer 2HK$2,667 HKD
Brilliant EarthHK$4,864 HKD

11 data points across 3 retailers

3 retailersHK$1,342 HKD to HK$4,864 HKD

A
Cheapest Retailer
-
HK$1,342 HKD
Final sale: no returns
A
Retailer 2
-
HK$2,667 HKD
View
Most Expensive
B
Brilliant Earth
22321991A · Nov 4
HK$4,864 HKD
$620 USD
View
2 more retailers have this diamond
Prices start from HK$1,342 HKDSave up to HK$3,522 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
1.05ct Marquise
HK$1,342 HKD