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Marquise|Lab Grown|IGI

4.31ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG793603302

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG793603302

Diamond specifications and retailer prices

From $12,568 AUD
$8,828 USD
As of October 27, 2026
Save $33,515 AUD (73%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $46,083 AUD at Taylor and Hart · As of October 26, 2026
View at Taylor and Hart

About this 4.31ct lab-grown marquise diamond

This 4.31ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG793603302 or 793603302. Listed at 24 retailers as of October 26, 2026, with prices from $12,568 to $46,083, a $33,515 spread on the same certified stone. Taylor and Hart lists it at $46,083. 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

4.31
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG793603302
Dimensions16.79 × 8.65 × 5.23 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.79 mm8.65 mm4.31 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG793603302
Side View
Table 61.0%Crown 34.2°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $23,127 AUD|Low: $11,076 AUD|High: $73,456 AUD|Avg: $25,025 AUD|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 11
Retailer 12
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Retailer 19
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Retailer 23
Taylor and Hart
October 27, 2026
Retailer 22$12,568 AUD
Retailer 4$13,070 AUD
Retailer 20$13,109 AUD
Retailer 14$13,343 AUD
Retailer 9$13,452 AUD
Retailer 11$14,435 AUD
Retailer 6$14,461 AUD
Retailer 2$14,578 AUD
Retailer 3$16,394 AUD
Retailer 23$16,659 AUD
Retailer 5$16,918 AUD
Retailer 12$17,499 AUD
Retailer 7$20,893 AUD
Retailer 10$23,095 AUD
Retailer 1$23,127 AUD
Retailer 19$23,475 AUD
Retailer 17$26,577 AUD
Retailer 18$30,907 AUD
Retailer 21$33,005 AUD
Retailer 15$33,140 AUD
Retailer 8$38,066 AUD
Retailer 16$40,603 AUD
Taylor and Hart$46,083 AUD
Retailer 13$73,456 AUD

34 data points across 24 retailers

24 retailers$12,568 AUD to $46,083 AUD

A
Cheapest Retailer
-
$12,568 AUD
$8,828 USD
Retailer 2
-
$13,070 AUD
$9,181 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$13,109 AUD
$9,208 USD
View
A
Retailer 4
-
$13,343 AUD
CA$13,017 CAD
View
A
Retailer 5
-
$13,452 AUD
$9,449 USD
View
A
Retailer 6
-
$14,435 AUD
$10,140 USD
View
A
Retailer 7
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$14,461 AUD
$10,158 USD
View
A
Retailer 8
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$14,578 AUD
$10,240 USD
View
Price last confirmed 7 days ago
Retailer 9
-
$14,578 AUD
$10,240 USD
View
Price last confirmed 16 days ago
Retailer 10
-
$16,394 AUD
$11,516 USD
View
Price last confirmed 7 days ago
A
Retailer 11
-
$16,659 AUD
$11,702 USD
View
A
Retailer 12
-
$17,499 AUD
£9,679 GBP
View
B+
Retailer 13
-
$20,893 AUD
£11,556 GBP
View
Retailer 14
-
$22,947 AUD
$16,119 USD
View
Price last confirmed 11 days ago
B+
Retailer 15
-
$23,127 AUD
€15,472 EUR
View
B+
Retailer 16
-
$23,475 AUD
$16,490 USD
View
B+
Retailer 17
-
$26,577 AUD
£14,700 GBP
View
Retailer 18
-
$30,907 AUD
ZAR 350,735 ZAR
View
Price last confirmed 7 days ago
B
Retailer 19
-
$33,005 AUD
$23,184 USD
View
B
Retailer 20
-
$33,140 AUD
$23,279 USD
View
Retailer 21
-
$38,066 AUD
$26,739 USD
View
Price last confirmed 8 days ago
B
Retailer 22
-
$40,603 AUD
$28,521 USD
View
Most Expensive
B
Taylor and Hart
8PB1PC0 · Oct 26
$46,083 AUD
$32,371 USD
View
22 more retailers have this diamond
Prices start from $12,568 AUDSave up to $33,515 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
4.31ct Marquise
$12,568 AUD