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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 €7,527 EUR
$8,409 USD
As of October 26, 2026
Save €12,682 EUR (63%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €28,256 EUR at Taylor and Hart · As of October 3, 2026
View at Taylor and Hart

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 12 retailers as of October 26, 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
Color
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

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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 26
Current: €14,527 EUR|Low: €6,753 EUR|High: €44,793 EUR|Avg: €16,334 EUR|-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
Taylor and Hart
October 18, 2026
Retailer 12€7,527 EUR
Retailer 2€7,874 EUR
Retailer 11€8,136 EUR
Retailer 8€8,817 EUR
Retailer 15€10,159 EUR
Retailer 5€10,317 EUR
Retailer 4€10,951 EUR
Retailer 7€12,754 EUR
Retailer 16€13,992 EUR
Retailer 17€14,051 EUR
Retailer 1€14,527 EUR
Retailer 6€16,101 EUR
Retailer 3€16,391 EUR
Retailer 18€19,001 EUR
Retailer 13€20,208 EUR
Retailer 14€23,212 EUR
Retailer 10€24,775 EUR
Taylor and Hart€28,256 EUR
Retailer 9€44,793 EUR

17 data points across 19 retailers

12 retailers€7,527 EUR to €20,208 EUR

A
Cheapest Retailer
-
€7,527 EUR
$8,409 USD
Retailer 2
-
€7,874 EUR
$8,797 USD
View
Price last confirmed 29 days ago
A
Retailer 3
-
€8,136 EUR
CA$12,624 CAD
View
A
Retailer 4
-
€10,159 EUR
$11,350 USD
View
B+
Retailer 5
-
€13,992 EUR
$15,632 USD
View
B+
Retailer 6
-
€14,527 EUR
$16,230 USD
View
Retailer 7
-
€15,208 EUR
$16,990 USD
View
Price last confirmed 27 days ago
Retailer 8
-
€16,391 EUR
£14,419 GBP
View
Price last confirmed 31 days ago
Retailer 9
-
€19,001 EUR
ZAR 342,941 ZAR
View
Price last confirmed 29 days ago
B
Retailer 10
-
€20,208 EUR
$22,577 USD
View
Retailer 11
-
€23,212 EUR
$25,933 USD
View
Price last confirmed 8 days ago
Most Expensive
Taylor and Hart
71CM6ZZ · Oct 3
€28,256 EUR
$31,568 USD
View
Price last confirmed 29 days ago
11 more retailers have this diamond
Prices start from €7,527 EURSave up to €12,682 EUR

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
€7,527 EUR