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Marquise|Lab Grown|IGI

3.50ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG844682930

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844682930

Diamond specifications and retailer prices

From €3,387 EUR
$3,784 USD
As of October 30, 2026
Save €10,506 EUR (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €13,893 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.5ct lab-grown marquise diamond

This 3.5ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG844682930 or 844682930. Listed at 19 retailers as of October 30, 2026, with prices from €3,387 to €13,893, a €10,506 spread on the same certified stone. Taylor and Hart lists it at €13,893. 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

3.50
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844682930
Dimensions16.05 × 7.78 × 4.82 mm
L/W Ratio2.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.05 mm7.78 mm3.50 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844682930
Side View
Table 62.0%Crown 33.7°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 62.0%

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: Oct 30
Current: €5,144 EUR|Low: €3,387 EUR|High: €13,893 EUR|Avg: €5,989 EUR|-2.1%
Retailer 1
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Retailer 18
Taylor and Hart
November 2, 2026
Retailer 4€3,387 EUR
Retailer 2€3,549 EUR
Retailer 5€3,793 EUR
Retailer 10€3,798 EUR
Retailer 17€3,929 EUR
Retailer 14€3,929 EUR
Retailer 8€4,034 EUR
Retailer 13€4,675 EUR
Retailer 18€4,910 EUR
Retailer 1€5,144 EUR
Retailer 7€5,210 EUR
Retailer 3€6,043 EUR
Retailer 6€6,088 EUR
Retailer 16€6,440 EUR
Retailer 11€8,415 EUR
Retailer 12€8,983 EUR
Retailer 15€9,121 EUR
Retailer 9€9,901 EUR
Taylor and Hart€13,893 EUR

13 data points across 19 retailers

19 retailers€3,387 EUR to €13,893 EUR

A
Cheapest Retailer
-
€3,387 EUR
$3,784 USD
A
Retailer 2
-
€3,549 EUR
$3,965 USD
View
A
Retailer 3
-
€3,793 EUR
$4,238 USD
View
Final sale: no returns
A
Retailer 4
-
€3,798 EUR
$4,243 USD
View
A
Retailer 5
-
€3,929 EUR
$4,389 USD
View
A
Retailer 6
-
€3,929 EUR
$4,390 USD
View
A
Retailer 7
-
€4,034 EUR
$4,507 USD
View
A
Retailer 8
-
€4,675 EUR
£4,112 GBP
View
A
Retailer 9
-
€4,910 EUR
$5,485 USD
View
A
Retailer 10
-
€5,144 EUR
£4,525 GBP
View
A
Retailer 11
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€5,210 EUR
$5,821 USD
View
B+
Retailer 12
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€6,043 EUR
£5,316 GBP
View
B+
Retailer 13
-
€6,088 EUR
$6,802 USD
View
B+
Retailer 14
-
€6,440 EUR
$7,195 USD
View
B+
Retailer 15
-
€8,415 EUR
£7,403 GBP
View
B+
Retailer 16
-
€8,983 EUR
A$15,439 AUD
View
B+
Retailer 17
-
€9,121 EUR
ZAR 164,624 ZAR
View
B
Retailer 18
-
€9,901 EUR
$11,062 USD
View
Most Expensive
B
Taylor and Hart
K0576II · Oct 31
€13,893 EUR
$15,521 USD
View
18 more retailers have this diamond
Prices start from €3,387 EURSave up to €10,506 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
3.50ct Marquise
€3,387 EUR