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Marquise|Lab Grown|IGI

1.78ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG836666661

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG836666661

Diamond specifications and retailer prices

From HK$2,702 HKD
£271 GBP
As of November 1, 2026
Save HK$10,244 HKD (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$12,945 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.78ct lab-grown marquise diamond

This 1.78ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG836666661 or 836666661. Listed at 12 retailers as of October 31, 2026, with prices from HK$2,702 to HK$12,945, a HK$10,244 spread on the same certified stone. Brilliant Earth lists it at HK$12,945. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836666661
Dimensions11.86 × 6.55 × 4.04 mm
L/W Ratio1.81
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.86 mm6.55 mm1.78 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836666661
Side View
Table 60.0%Crown 34.9°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.7%

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: Nov 1
Current: HK$12,945 HKD|Low: HK$2,701 HKD|High: HK$17,104 HKD|Avg: HK$6,767 HKD|-24.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 5HK$2,702 HKD
Retailer 4HK$3,899 HKD
Retailer 7HK$3,972 HKD
Retailer 9HK$4,144 HKD
Retailer 6HK$4,373 HKD
Retailer 10HK$5,013 HKD
Retailer 8HK$5,390 HKD
Retailer 12HK$7,453 HKD
Retailer 3HK$7,840 HKD
Retailer 2HK$9,267 HKD
Retailer 11HK$9,407 HKD
Brilliant EarthHK$12,945 HKD

15 data points across 12 retailers

12 retailersHK$2,702 HKD to HK$12,945 HKD

A
Cheapest Retailer
-
HK$2,702 HKD
£271 GBP
B+
Retailer 2
-
HK$3,899 HKD
$497 USD
View
A
Retailer 3
-
HK$3,972 HKD
ZAR 8,178 ZAR
View
A
Retailer 4
-
HK$4,144 HKD
€503 EUR
View
A
Retailer 5
-
HK$4,373 HKD
£439 GBP
View
A
Retailer 6
-
HK$5,013 HKD
$639 USD
View
A
Retailer 7
-
HK$5,390 HKD
A$1,057 AUD
View
B+
Retailer 8
-
HK$7,453 HKD
$950 USD
View
B+
Retailer 9
-
HK$7,840 HKD
$999 USD
View
B+
Retailer 10
-
HK$9,267 HKD
£930 GBP
View
B+
Retailer 11
-
HK$9,407 HKD
$1,199 USD
View
Most Expensive
B
Brilliant Earth
22163644A · Oct 31
HK$12,945 HKD
$1,650 USD
View
11 more retailers have this diamond
Prices start from HK$2,702 HKDSave up to HK$10,244 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
1.78ct Marquise
HK$2,702 HKD