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Marquise|Lab Grown|IGI

4.00ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG817609491

Shape and cutting style on the report: Hexagonal modified brilliant

Certificate IGI LG817609491

Diamond specifications and retailer prices

From $8,421 AUD
$5,915 USD
As of October 31, 2026
Save $41,363 AUD (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $49,783 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4ct lab-grown marquise diamond

This 4ct 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 LG817609491 or 817609491. Listed at 9 retailers as of October 31, 2026, with prices from $8,421 to $49,783, a $41,363 spread on the same certified stone. Do Amore Diamonds lists it at $49,783. 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

4.00
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817609491
Dimensions16.12 × 7.66 × 4.98 mm
L/W Ratio2.10
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.12 mm7.66 mm4.00 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817609491
Side View
Table 63.0%Crown 35.1°Girdle: MED-STKPavilion 37.8°Culet: NoneDepth 65.0%

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: $49,783 AUD|Low: $3,495 AUD|High: $49,783 AUD|Avg: $13,380 AUD|+167.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 5$8,421 AUD
Retailer 8$8,737 AUD
Retailer 9$10,071 AUD
Retailer 6$13,595 AUD
Retailer 3$18,957 AUD
Retailer 4$23,107 AUD
Retailer 2$29,121 AUD
Retailer 7$32,688 AUD
Do Amore Diamonds$49,783 AUD

25 data points across 9 retailers

9 retailers$8,421 AUD to $49,783 AUD

A
Cheapest Retailer
-
$8,421 AUD
$5,915 USD
A
Retailer 2
-
$8,737 AUD
$6,137 USD
View
Final sale: no returns
A
Retailer 3
-
$13,595 AUD
$9,550 USD
View
B+
Retailer 4
-
$18,957 AUD
£10,485 GBP
View
B+
Retailer 5
-
$23,107 AUD
$16,231 USD
View
B
Retailer 6
-
$29,121 AUD
£16,107 GBP
View
B
Retailer 7
-
$32,688 AUD
$22,961 USD
View
B
Retailer 8
-
$46,523 AUD
$32,680 USD
View
Most Expensive
B
Do Amore Diamonds
27-15C9351EE · Oct 31
$49,783 AUD
$34,970 USD
View
8 more retailers have this diamond
Prices start from $8,421 AUDSave up to $41,363 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
4.00ct Marquise
$8,421 AUD