Marquise|Lab Grown|IGI

1.28ct D VS1 Marquise Lab Grown Diamond

EX • D/VS1 • IGI LG851606835

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG851606835

Diamond specifications and retailer prices

From $307 USD
HK$2,400 HKD
As of October 30, 2026
Save $799 USD (72%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,106 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.28ct lab-grown marquise diamond

This 1.28ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG851606835 or 851606835. Listed at 10 retailers as of October 29, 2026, with prices from $307 to $1,106, a $799 spread on the same certified stone. MOH London lists it at $1,106. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851606835
Dimensions11.50 × 5.78 × 3.42 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.50 mm5.78 mm1.28 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851606835
Side View
Table 59.0%Crown 32.7°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 59.2%

Caratlytics Score

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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 30
Current: $1,106 USD|Low: $307 USD|High: $1,106 USD|Avg: $710 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 8$307 USD
Retailer 5$368 USD
Retailer 4$468 USD
Retailer 7$532 USD
Retailer 10$750 USD
Retailer 3$780 USD
Retailer 2$885 USD
Retailer 9$889 USD
Retailer 6$945 USD
MOH London$1,106 USD

4 data points across 10 retailers

10 retailers$307 USD to $1,106 USD

A
Cheapest Retailer
-
$307 USD
HK$2,400 HKD
A
Retailer 2
-
$368 USD
£290 GBP
View
A
Retailer 3
-
$468 USD
View
B+
Retailer 4
-
$532 USD
View
B+
Retailer 5
-
$750 USD
View
B+
Retailer 6
-
$780 USD
View
B
Retailer 7
-
$885 USD
View
B
Retailer 8
-
$889 USD
SGD 1,202 SGD
View
B
Retailer 9
-
$945 USD
View
Most Expensive
B
MOH London
LG851606835 · Oct 29
$1,106 USD
£871 GBP
View
9 more retailers have this diamond
Prices start from $307 USDSave up to $799 USD

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
1.28ct Marquise
$307 USD