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Marquise|Lab Grown|IGI

3.78ct F VS2 Marquise Lab Grown Diamond

ID • F/VS2 • IGI LG799689920

Shape and cutting style on the report: Hexagonal modified brilliant

Certificate IGI LG799689920

Diamond specifications and retailer prices

From €1,186 EUR
$1,330 USD
As of November 3, 2026
Save €2,412 EUR (67%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €3,598 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.78ct lab-grown marquise diamond

This 3.78ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG799689920 or 799689920. Listed at 7 retailers as of October 31, 2026, with prices from €1,186 to €3,598, a €2,412 spread on the same certified stone. Taylor and Hart lists it at €3,598. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.78
Carat
F
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle42.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799689920
Dimensions14.94 × 7.67 × 4.90 mm
L/W Ratio1.95
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.94 mm7.67 mm3.78 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799689920
Side View
Table 61.0%Crown 35.2°Girdle: STK-THKPavilion 42.9°Culet: NoneDepth 63.9%

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 3
Current: €1,648 EUR|Low: €1,186 EUR|High: €3,598 EUR|Avg: €2,661 EUR|+11.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Taylor and Hart
November 2, 2026
Retailer 4€1,186 EUR
Retailer 3€1,642 EUR
Retailer 1€1,648 EUR
Retailer 8€2,063 EUR
Retailer 5€3,334 EUR
Retailer 7€3,403 EUR
Retailer 6€3,464 EUR
Retailer 2€3,500 EUR
Taylor and Hart€3,598 EUR

26 data points across 9 retailers

7 retailers€1,186 EUR to €3,598 EUR

A
Cheapest Retailer
-
€1,186 EUR
$1,330 USD
B+
Retailer 2
-
€1,642 EUR
View
B+
Retailer 3
-
€1,648 EUR
$1,848 USD
View
B
Retailer 4
-
€3,334 EUR
$3,740 USD
View
B
Retailer 5
-
€3,464 EUR
SGD 5,250 SGD
View
B
Retailer 6
-
€3,500 EUR
£3,091 GBP
View
Most Expensive
B
Taylor and Hart
CX88C4E · Oct 31
€3,598 EUR
$4,035 USD
View
6 more retailers have this diamond
Prices start from €1,186 EURSave up to €2,412 EUR

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
3.78ct Marquise
€1,186 EUR