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Marquise|Lab Grown|IGI

4.18ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG817652523

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817652523

Diamond specifications and retailer prices

From $11,971 AUD
$8,409 USD
As of October 31, 2026
Save $20,170 AUD (63%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $36,918 AUD at Wholesale Diamonds Direct · As of October 24, 2026
View at Wholesale Diamonds Direct

About this 4.18ct lab-grown marquise diamond

This 4.18ct 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 LG817652523 or 817652523. Listed at 11 retailers as of October 31, 2026, with a 168% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.18
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817652523
Dimensions16.24 × 8.60 × 5.18 mm
L/W Ratio1.89
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.24 mm8.60 mm4.18 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817652523
Side View
Table 60.0%Crown 34.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.2%

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 31
Current: $23,105 AUD|Low: $10,741 AUD|High: $71,241 AUD|Avg: $25,979 AUD|-1.6%
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
Wholesale Diamonds Direct
October 18, 2026
Retailer 12$11,971 AUD
Retailer 18$12,523 AUD
Retailer 11$12,939 AUD
Retailer 7$14,022 AUD
Retailer 14$16,158 AUD
Retailer 4$16,408 AUD
Retailer 3$17,416 AUD
Retailer 6$20,285 AUD
Retailer 15$22,254 AUD
Retailer 16$22,347 AUD
Retailer 1$23,105 AUD
Retailer 5$25,608 AUD
Retailer 2$26,069 AUD
Retailer 17$30,220 AUD
Retailer 13$32,141 AUD
Wholesale Diamonds Direct$36,918 AUD
Retailer 10$39,404 AUD
Retailer 8$44,940 AUD
Retailer 9$71,241 AUD

17 data points across 19 retailers

11 retailers$11,971 AUD to $32,141 AUD

A
Cheapest Retailer
-
$11,971 AUD
$8,409 USD
Retailer 2
-
$12,523 AUD
$8,797 USD
View
Price last confirmed 29 days ago
A
Retailer 3
-
$12,939 AUD
CA$12,624 CAD
View
A
Retailer 4
-
$16,158 AUD
$11,350 USD
View
B+
Retailer 5
-
$22,254 AUD
$15,632 USD
View
B+
Retailer 6
-
$23,105 AUD
$16,230 USD
View
Retailer 7
-
$24,187 AUD
$16,990 USD
View
Price last confirmed 27 days ago
Retailer 8
-
$26,069 AUD
£14,419 GBP
View
Price last confirmed 31 days ago
Retailer 9
-
$30,220 AUD
ZAR 342,941 ZAR
View
Price last confirmed 29 days ago
B
Retailer 10
-
$32,141 AUD
$22,577 USD
View
Most Expensive
Wholesale Diamonds Direct
475659898 · Oct 24
$36,918 AUD
$25,933 USD
View
Price last confirmed 8 days ago
10 more retailers have this diamond
Prices start from $11,971 AUDSave up to $20,170 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
4.18ct Marquise
$11,971 AUD