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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 $4,405 AUD
£2,437 GBP
As of October 30, 2026
Save $14,025 AUD (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $18,430 AUD at Taylor and Hart · As of October 30, 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 30, 2026, with prices from $4,405 to $18,430, a $14,025 spread on the same certified stone. Taylor and Hart lists it at $18,430. 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
Colour
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

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: $5,090 AUD|Low: $4,405 AUD|High: $25,450 AUD|Avg: $10,160 AUD|-29.0%
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 30, 2026
Retailer 5$4,405 AUD
Retailer 1$5,090 AUD
Retailer 9$5,950 AUD
Retailer 6$7,008 AUD
Retailer 4$7,141 AUD
Retailer 3$7,624 AUD
Retailer 2$8,270 AUD
Retailer 7$8,340 AUD
Retailer 10$8,764 AUD
Retailer 8$12,185 AUD
Retailer 11$12,330 AUD
Retailer 12$14,364 AUD
Taylor and Hart$18,430 AUD

29 data points across 13 retailers

19 retailers$4,405 AUD to $18,430 AUD

A
Cheapest Retailer
-
$4,405 AUD
£2,437 GBP
A
Retailer 2
-
$5,090 AUD
$3,576 USD
View
Final sale: no returns
A
Retailer 3
-
$5,950 AUD
$4,180 USD
View
Retailer 4
-
$6,143 AUD
$4,316 USD
View
Price last confirmed 25 days ago
Retailer 5
-
$6,400 AUD
$4,496 USD
View
Price last confirmed 30 days ago
Retailer 6
-
$6,707 AUD
$4,712 USD
View
Price last confirmed 31 days ago
A
Retailer 7
-
$7,008 AUD
£3,877 GBP
View
Retailer 8
-
$7,141 AUD
$5,017 USD
View
Price last confirmed 17 days ago
Retailer 9
-
$7,322 AUD
$5,144 USD
View
Price last confirmed 31 days ago
Retailer 10
-
$7,424 AUD
$5,216 USD
View
Price last confirmed 27 days ago
Retailer 11
-
$7,624 AUD
$5,356 USD
View
Price last confirmed 7 days ago
A
Retailer 12
-
$8,270 AUD
$5,810 USD
View
A
Retailer 13
-
$8,340 AUD
$5,859 USD
View
A
Retailer 14
-
$8,764 AUD
£4,848 GBP
View
Retailer 15
-
$9,278 AUD
$6,518 USD
View
Price last confirmed 29 days ago
A
Retailer 16
-
$12,185 AUD
ZAR 138,297 ZAR
View
A
Retailer 17
-
$12,330 AUD
£6,821 GBP
View
A
Retailer 18
-
$14,364 AUD
$10,091 USD
View
Most Expensive
B+
Taylor and Hart
QHVPPCE · Oct 30
$18,430 AUD
$12,948 USD
View
18 more retailers have this diamond
Prices start from $4,405 AUDSave up to $14,025 AUD

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
$4,405 AUD