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Marquise|Lab Grown|IGI

1.28ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG780662708

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780662708

Diamond specifications and retailer prices

From $1,073 CAD
HK$6,000 HKD
As of November 1, 2026
Save $3,720 CAD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,793 CAD at Brilliant Earth · As of November 2, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780662708 or 780662708. Listed at 14 retailers as of November 1, 2026, with prices from $1,073 to $4,793, a $3,720 spread on the same certified stone. Brilliant Earth lists it at $4,793. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662708
Dimensions11.19 × 5.69 × 3.58 mm
L/W Ratio1.97
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
11.19 mm5.69 mm1.28 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662708
Side View
Table 61.0%Crown 35°Girdle: MED-THKPavilion 41°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
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 1
Current: $4,793 CAD|Low: $1,073 CAD|High: $4,793 CAD|Avg: $2,304 CAD
Brilliant Earth
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 3, 2026
Retailer 4$1,073 CAD
Retailer 11$1,227 CAD
Retailer 3$1,321 CAD
Retailer 14$1,325 CAD
Retailer 9$1,436 CAD
Retailer 8$1,446 CAD
Retailer 7$1,614 CAD
Retailer 10$1,660 CAD
Retailer 13$2,204 CAD
Retailer 12$3,039 CAD
Retailer 6$3,577 CAD
Retailer 5$3,696 CAD
Retailer 2$3,906 CAD
Brilliant Earth$4,793 CAD

42 data points across 14 retailers

14 retailers$1,073 CAD to $4,793 CAD

A
Cheapest Retailer
-
$1,073 CAD
HK$6,000 HKD
A
Retailer 2
-
$1,227 CAD
$878 USD
View
A
Retailer 3
-
$1,321 CAD
$945 USD
View
A
Retailer 4
-
$1,325 CAD
$948 USD
View
A
Retailer 5
-
$1,436 CAD
€979 EUR
View
A
Retailer 6
-
$1,446 CAD
£815 GBP
View
B+
Retailer 7
-
$1,614 CAD
ZAR 18,661 ZAR
View
B+
Retailer 8
-
$1,660 CAD
A$1,828 AUD
View
Retailer 9
-
$2,204 CAD
$1,577 USD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$3,039 CAD
$2,174 USD
View
Retailer 11
-
$3,577 CAD
$2,560 USD
View
Price last confirmed 26 days ago
B
Retailer 12
-
$3,696 CAD
$2,645 USD
View
B
Retailer 13
-
$3,906 CAD
£2,201 GBP
View
Most Expensive
B
Brilliant Earth
18951473A · Nov 2
$4,793 CAD
$3,430 USD
View
13 more retailers have this diamond
Prices start from $1,073 CADSave up to $3,720 CAD

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
$1,073 CAD