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Marquise|Lab Grown|IGI

1.28ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG762546058

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG762546058

Diamond specifications and retailer prices

From $588 USD
As of November 4, 2026
Save $1,572 USD (73%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,799 USD at MOH London · As of October 26, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG762546058 or 762546058. Listed at 14 retailers as of November 4, 2026, with a 267% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762546058
Dimensions11.64 × 5.62 × 3.51 mm
L/W Ratio2.07
Girdle conditionFaceted
Culet sizePointed
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
11.64 mm5.62 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762546058
Side View
Table 58.0%Crown 34.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: Nov 4
Current: $2,799 USD|Low: $588 USD|High: $3,390 USD|Avg: $1,588 USD|-16.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 4, 2026
Retailer 2$588 USD
Retailer 8$625 USD
Retailer 6$716 USD
Retailer 9$789 USD
Retailer 4$831 USD
Retailer 10$1,013 USD
Retailer 13$1,027 USD
Retailer 12$1,155 USD
Retailer 14$1,194 USD
Retailer 11$1,580 USD
Retailer 5$2,093 USD
Retailer 7$2,160 USD
Retailer 3$2,525 USD
MOH London$2,799 USD

42 data points across 14 retailers

14 retailers$588 USD to $2,160 USD

A
Cheapest Retailer
-
$588 USD
A
Retailer 2
-
$625 USD
View
A
Retailer 3
-
$716 USD
View
A
Retailer 4
-
$789 USD
View
A
Retailer 5
-
$831 USD
View
A
Retailer 6
-
$1,013 USD
View
A
Retailer 7
-
$1,027 USD
View
B+
Retailer 8
-
$1,155 USD
View
B+
Retailer 9
-
$1,194 USD
View
B+
Retailer 10
-
$1,580 USD
View
B
Retailer 11
-
$2,093 USD
View
B
Retailer 12
-
$2,160 USD
View
Retailer 13
-
$2,525 USD
View
Price last confirmed 7 days ago
Most Expensive
MOH London
LG762546058 · Oct 26
$2,799 USD
£2,204 GBP
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from $588 USDSave up to $1,572 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
$588 USD