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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 $3,784 USD
As of October 30, 2026
Save $11,737 USD (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,521 USD 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 $3,784 to $15,521, a $11,737 spread on the same certified stone. Taylor and Hart lists it at $15,521. 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

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: Oct 30
Current: $9,402 USD|Low: $3,784 USD|High: $15,521 USD|Avg: $6,681 USD|-0.1%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
Taylor and Hart
November 1, 2026
Retailer 4$3,784 USD
Retailer 2$3,965 USD
Retailer 5$4,238 USD
Retailer 10$4,243 USD
Retailer 17$4,389 USD
Retailer 14$4,390 USD
Retailer 8$4,507 USD
Retailer 12$5,223 USD
Retailer 18$5,485 USD
Retailer 13$5,747 USD
Retailer 7$5,821 USD
Retailer 3$6,751 USD
Retailer 6$6,802 USD
Retailer 16$7,195 USD
Retailer 1$9,402 USD
Retailer 11$10,035 USD
Retailer 15$10,190 USD
Retailer 9$11,062 USD
Taylor and Hart$15,521 USD

12 data points across 19 retailers

19 retailers$3,784 USD to $15,521 USD

A
Cheapest Retailer
-
$3,784 USD
A
Retailer 2
-
$3,965 USD
View
A
Retailer 3
-
$4,238 USD
View
Final sale: no returns
A
Retailer 4
-
$4,243 USD
View
A
Retailer 5
-
$4,389 USD
View
A
Retailer 6
-
$4,390 USD
View
A
Retailer 7
-
$4,507 USD
View
A
Retailer 8
-
$5,223 USD
£4,112 GBP
View
A
Retailer 9
-
$5,485 USD
View
A
Retailer 10
-
$5,747 USD
£4,525 GBP
View
A
Retailer 11
-
$5,821 USD
View
B+
Retailer 12
-
$6,751 USD
£5,316 GBP
View
B+
Retailer 13
-
$6,802 USD
View
B+
Retailer 14
-
$7,195 USD
View
B+
Retailer 15
-
$9,402 USD
£7,403 GBP
View
B+
Retailer 16
-
$10,035 USD
A$15,439 AUD
View
B+
Retailer 17
-
$10,190 USD
ZAR 164,624 ZAR
View
B
Retailer 18
-
$11,062 USD
View
Most Expensive
B
Taylor and Hart
K0576II · Oct 31
$15,521 USD
View
18 more retailers have this diamond
Prices start from $3,784 USDSave up to $11,737 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
3.50ct Marquise
$3,784 USD