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Marquise|Lab Grown|IGI

4.03ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG839683323

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG839683323

Diamond specifications and retailer prices

From $3,370 USD
£2,653 GBP
As of October 29, 2026
Save $10,250 USD (75%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $13,620 USD at Taylor and Hart · As of October 28, 2026
View at Taylor and Hart

About this 4.03ct lab-grown marquise diamond

This 4.03ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839683323 or 839683323. Listed at 19 retailers as of October 28, 2026, with prices from $3,370 to $13,620, a $10,250 spread on the same certified stone. Taylor and Hart lists it at $13,620. 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

4.03
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839683323
Dimensions15.79 × 8.23 × 5.23 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.79 mm8.23 mm4.03 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839683323
Side View
Table 63.0%Crown 37°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.5%

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 29
Current: $4,180 USD|Low: $3,215 USD|High: $18,627 USD|Avg: $7,518 USD|-20.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
October 29, 2026
Retailer 8$3,370 USD
Retailer 3$3,749 USD
Retailer 1$4,180 USD
Retailer 4$5,017 USD
Retailer 9$5,154 USD
Retailer 2$5,356 USD
Retailer 10$5,810 USD
Retailer 11$5,816 USD
Retailer 5$6,157 USD
Retailer 12$8,174 USD
Retailer 6$8,663 USD
Retailer 7$10,091 USD
Taylor and Hart$13,620 USD

30 data points across 13 retailers

19 retailers$3,370 USD to $13,620 USD

A
Cheapest Retailer
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$3,370 USD
£2,653 GBP
A
Retailer 2
-
$3,749 USD
View
Final sale: no returns
A
Retailer 3
-
$4,180 USD
View
A
Retailer 4
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$4,316 USD
View
Price last confirmed 24 days ago
A
Retailer 5
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$4,496 USD
View
Price last confirmed 29 days ago
A
Retailer 6
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$4,712 USD
View
Price last confirmed 30 days ago
A
Retailer 7
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$5,017 USD
View
Price last confirmed 17 days ago
A
Retailer 8
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$5,144 USD
View
Price last confirmed 31 days ago
A
Retailer 9
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$5,154 USD
£4,058 GBP
View
A
Retailer 10
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$5,216 USD
View
Price last confirmed 26 days ago
A
Retailer 11
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$5,356 USD
View
A
Retailer 12
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$5,810 USD
View
A
Retailer 13
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$5,816 USD
View
A
Retailer 14
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$6,157 USD
£4,848 GBP
View
A
Retailer 15
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$6,518 USD
View
Price last confirmed 29 days ago
A
Retailer 16
-
$8,174 USD
ZAR 132,044 ZAR
View
Price last confirmed 9 days ago
A
Retailer 17
-
$8,663 USD
£6,821 GBP
View
A
Retailer 18
-
$10,091 USD
View
Most Expensive
B+
Taylor and Hart
QHVPPCE · Oct 28
$13,620 USD
View
18 more retailers have this diamond
Prices start from $3,370 USDSave up to $10,250 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
4.03ct Marquise
$3,370 USD