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Marquise|Lab Grown|IGI

1.75ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG781609429

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG781609429

Diamond specifications and retailer prices

From $2,081 USD
As of November 1, 2026
Save $4,719 USD (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,800 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1.75ct lab-grown marquise diamond

This 1.75ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG781609429 or 781609429. Listed at 10 retailers as of October 31, 2026, with prices from $2,081 to $6,800, a $4,719 spread on the same certified stone. Taylor and Hart lists it at $6,800. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.75
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781609429
Dimensions12.18 × 6.36 × 4.03 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
12.18 mm6.36 mm1.75 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781609429
Side View
Table 59.0%Crown 33.2°Girdle: MED-STKPavilion 42.1°Culet: NoneDepth 63.4%

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: $2,746 USD|Low: $1,986 USD|High: $6,474 USD|Avg: $4,128 USD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$2,081 USD
Retailer 1$2,746 USD
Retailer 4$2,770 USD
Retailer 7$3,044 USD
Retailer 3$3,649 USD
Retailer 6$4,984 USD
Retailer 2$5,533 USD
Retailer 5$5,680 USD
Retailer 8$6,474 USD

43 data points across 9 retailers

10 retailers$2,081 USD to $6,800 USD

A
Cheapest Retailer
-
$2,081 USD
B+
Retailer 2
-
$2,746 USD
£2,162 GBP
View
B+
Retailer 3
-
$2,770 USD
View
B+
Retailer 4
-
$3,044 USD
View
B+
Retailer 5
-
$3,649 USD
€3,475 EUR
View
B
Retailer 6
-
$4,984 USD
View
B
Retailer 7
-
$5,533 USD
£4,357 GBP
View
B
Retailer 8
-
$5,680 USD
View
B
Retailer 9
-
$6,474 USD
SGD 8,748 SGD
View
Most Expensive
B
Taylor and Hart
BF3QSAT · Oct 31
$6,800 USD
View
9 more retailers have this diamond
Prices start from $2,081 USDSave up to $4,719 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
1.75ct Marquise
$2,081 USD