Marquise|Lab Grown|IGI

1.28ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG839664801

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG839664801

Diamond specifications and retailer prices

From $215 USD
As of October 30, 2026
Save $975 USD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,190 USD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

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 LG839664801 or 839664801. Listed at 11 retailers as of October 26, 2026, with prices from $215 to $1,190, a $975 spread on the same certified stone. Brilliant Earth lists it at $1,190. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839664801
Dimensions10.92 × 5.82 × 3.56 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.92 mm5.82 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839664801
Side View
Table 58.0%Crown 33.8°Girdle: MED-STKPavilion 40.6°CuletDepth 61.2%

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: $1,190 USD|Low: $215 USD|High: $1,200 USD|Avg: $729 USD|-0.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2$215 USD
Retailer 3$358 USD
Retailer 9$457 USD
Retailer 6$498 USD
Retailer 4$653 USD
Retailer 7$714 USD
Retailer 10$760 USD
Retailer 8$859 USD
Retailer 5$1,072 USD
Brilliant Earth$1,190 USD

35 data points across 10 retailers

11 retailers$215 USD to $1,190 USD

A
Cheapest Retailer
-
$215 USD
A
Retailer 2
-
$250 USD
View
A
Retailer 3
-
$358 USD
£282 GBP
View
A
Retailer 4
-
$457 USD
View
A
Retailer 5
-
$498 USD
€474 EUR
View
B+
Retailer 6
-
$653 USD
A$1,005 AUD
View
B+
Retailer 7
-
$714 USD
View
B+
Retailer 8
-
$760 USD
View
B+
Retailer 9
-
$859 USD
View
B
Retailer 10
-
$1,072 USD
£844 GBP
View
Most Expensive
B
Brilliant Earth
21562549A · Oct 26
$1,190 USD
View
10 more retailers have this diamond
Prices start from $215 USDSave up to $975 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
$215 USD