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Marquise|Lab Grown|IGI

4.05ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG817696109

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817696109

Diamond specifications and retailer prices

From $3,609 USD
As of October 29, 2026
Save $10,260 USD (74%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $15,044 USD at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 4.05ct lab-grown marquise diamond

This 4.05ct 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 LG817696109 or 817696109. Listed at 17 retailers as of October 28, 2026, with a 284% 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

4.05
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817696109
Dimensions16.31 × 8.38 × 5.01 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.31 mm8.38 mm4.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817696109
Side View
Table 60.0%Crown 37.8°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
A+
Exceptional
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 29
Current: $7,955 USD|Low: $3,609 USD|High: $14,198 USD|Avg: $7,416 USD|-1.7%
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
October 29, 2026
Retailer 9$3,609 USD
Retailer 6$3,780 USD
Retailer 12$3,895 USD
Retailer 10$4,956 USD
Retailer 7$5,202 USD
Retailer 5$5,410 USD
Retailer 3$5,823 USD
Retailer 13$6,477 USD
Retailer 11$6,833 USD
Retailer 1$7,955 USD
Retailer 8$8,164 USD
Retailer 15$8,949 USD
Retailer 14$9,526 USD
Retailer 16$12,604 USD
Retailer 4$13,137 USD
Retailer 2$13,869 USD

17 data points across 16 retailers

17 retailers$3,609 USD to $13,869 USD

A+
Cheapest Retailer
-
$3,609 USD
Final sale: no returns
A+
Retailer 2
-
$3,780 USD
View
A
Retailer 3
-
$3,895 USD
View
A
Retailer 4
-
$4,956 USD
£3,903 GBP
View
A
Retailer 5
-
$5,202 USD
View
A
Retailer 6
-
$5,410 USD
View
A
Retailer 7
-
$5,823 USD
View
A
Retailer 8
-
$6,477 USD
£5,100 GBP
View
A
Retailer 9
-
$6,833 USD
€6,508 EUR
View
A
Retailer 10
-
$7,955 USD
ZAR 128,519 ZAR
View
Retailer 11
-
$8,164 USD
A$12,560 AUD
View
Price last confirmed 7 days ago
A
Retailer 12
-
$8,949 USD
View
A
Retailer 13
-
$9,526 USD
£7,501 GBP
View
A
Retailer 14
-
$12,604 USD
SGD 17,032 SGD
View
B+
Retailer 15
-
$13,137 USD
View
B+
Retailer 16
-
$13,869 USD
View
Most Expensive
Novita Diamonds
cert_817696109 · Oct 8
$15,044 USD
A$23,144 AUD
View
Price last confirmed 21 days ago
16 more retailers have this diamond
Prices start from $3,609 USDSave up to $10,260 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+
4.05ct Marquise
$3,609 USD