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Marquise|Lab Grown|IGI

1.28ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG768632050

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG768632050

Diamond specifications and retailer prices

From $301 USD
As of November 2, 2026
Save $2,369 USD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,670 USD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

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 LG768632050 or 768632050. Listed at 16 retailers as of November 1, 2026, with prices from $301 to $2,670, a $2,369 spread on the same certified stone. Do Amore Diamonds lists it at $2,670. 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 angle34.3°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768632050
Dimensions10.95 × 5.70 × 3.49 mm
L/W Ratio1.92
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
10.95 mm5.70 mm1.28 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768632050
Side View
Table 55.0%Crown 34.3°Girdle: MED-STKPavilion 38.5°Culet: NoneDepth 61.2%

Caratlytics Score

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A+
Exceptional
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 2
Current: $2,670 USD|Low: $301 USD|High: $3,500 USD|Avg: $1,321 USD|-11.9%
Do Amore Diamonds
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
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Retailer 17
November 1, 2026
Retailer 13$301 USD
Retailer 4$349 USD
Retailer 8$382 USD
Retailer 14$533 USD
Retailer 6$550 USD
Retailer 16$611 USD
Retailer 7$692 USD
Retailer 11$702 USD
Retailer 12$792 USD
Retailer 15$1,147 USD
Retailer 3$1,162 USD
Retailer 17$1,325 USD
Retailer 2$1,651 USD
Retailer 10$2,080 USD
Retailer 5$2,525 USD
Do Amore Diamonds$2,670 USD
Retailer 9$2,836 USD

28 data points across 17 retailers

16 retailers$301 USD to $2,670 USD

A+
Cheapest Retailer
-
$301 USD
A
Retailer 2
-
$349 USD
View
A
Retailer 3
-
$382 USD
View
Final sale: no returns
A
Retailer 4
-
$533 USD
View
A
Retailer 5
-
$550 USD
View
A
Retailer 6
-
$611 USD
View
A
Retailer 7
-
$692 USD
View
A
Retailer 8
-
$702 USD
€669 EUR
View
A
Retailer 9
-
$792 USD
A$1,218 AUD
View
B+
Retailer 10
-
$1,147 USD
View
B+
Retailer 11
-
$1,162 USD
View
B+
Retailer 12
-
$1,325 USD
View
B+
Retailer 13
-
$1,651 USD
£1,300 GBP
View
B+
Retailer 14
-
$2,080 USD
View
B
Retailer 15
-
$2,525 USD
View
Most Expensive
B
Do Amore Diamonds
27-C6D052B2D · Nov 1
$2,670 USD
View
15 more retailers have this diamond
Prices start from $301 USDSave up to $2,369 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
$301 USD