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Marquise|Lab Grown|IGI

1.28ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG771640286

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG771640286

Diamond specifications and retailer prices

From $549 SGD
As of November 4, 2026
Save $2,976 SGD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,525 SGD at Brilliant Earth · As of November 4, 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 LG771640286 or 771640286. Listed at 21 retailers as of November 4, 2026, with prices from $549 to $3,525, a $2,976 spread on the same certified stone. Brilliant Earth lists it at $3,525. 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
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771640286
Dimensions11.35 × 5.77 × 3.53 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
11.35 mm5.77 mm1.28 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771640286
Side View
Table 58.0%Crown 34.1°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $3,525 SGD|Low: $549 SGD|High: $3,730 SGD|Avg: $1,369 SGD|-3.8%
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
Retailer 15
November 5, 2026
Retailer 4$549 SGD
Retailer 7$614 SGD
Retailer 11$798 SGD
Retailer 14$833 SGD
Retailer 15$909 SGD
Retailer 6$999 SGD
Retailer 5$1,010 SGD
Retailer 13$1,051 SGD
Retailer 2$1,091 SGD
Retailer 3$1,143 SGD
Retailer 9$1,465 SGD
Retailer 12$2,004 SGD
Retailer 10$2,275 SGD
Retailer 8$2,371 SGD
Brilliant Earth$3,525 SGD

29 data points across 15 retailers

21 retailers$549 SGD to $3,525 SGD

Retailer 1
-
$471 SGD
Price last confirmed 34 days ago
Retailer 2
-
$549 SGD
View
Price last confirmed 37 days ago
A
Retailer 3
-
$549 SGD
View
Final sale: no returns
Retailer 4
-
$608 SGD
View
Price last confirmed 33 days ago
Retailer 5
-
$614 SGD
View
Price last confirmed 11 days ago
Retailer 6
-
$619 SGD
View
Price last confirmed 24 days ago
A
Retailer 7
-
$798 SGD
View
A
Retailer 8
-
$833 SGD
View
A
Retailer 9
-
$909 SGD
View
Retailer 10
-
$999 SGD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$1,010 SGD
View
A
Retailer 12
-
$1,051 SGD
View
A
Retailer 13
-
$1,091 SGD
View
A
Retailer 14
-
$1,143 SGD
View
B+
Retailer 15
-
$1,465 SGD
View
Retailer 16
-
$1,956 SGD
View
Price last confirmed 32 days ago
B+
Retailer 17
-
$2,004 SGD
View
B+
Retailer 18
-
$2,275 SGD
View
B+
Retailer 19
-
$2,371 SGD
View
Retailer 20
-
$3,264 SGD
View
Price last confirmed 29 days ago
Most Expensive
B
Brilliant Earth
21212659A · Nov 4
$3,525 SGD
$2,760 USD
View
20 more retailers have this diamond
Prices start from $549 SGDSave up to $2,976 SGD

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
$549 SGD