CaratHunter
Plans
Marquise|Lab Grown|IGI

3.78ct E VVS1 Marquise Lab Grown Diamond

EX • E/VVS1 • IGI LG817609496

Shape and cutting style on the report: Hexagonal modified brilliant

Certificate IGI LG817609496

Diamond specifications and retailer prices

From $2,007 AUD
$1,410 USD
As of October 30, 2026
Save $5,874 AUD (75%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $7,882 AUD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.78ct lab-grown marquise diamond

This 3.78ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG817609496 or 817609496. Listed at 6 retailers as of October 30, 2026, with prices from $2,007 to $7,882, a $5,874 spread on the same certified stone. Taylor and Hart lists it at $7,882. 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

3.78
Carat
E
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817609496
Dimensions15.26 × 7.54 × 4.99 mm
L/W Ratio2.02
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.26 mm7.54 mm3.78 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817609496
Side View
Table 60.0%Crown 34.8°Girdle: MED-STKPavilion 36.1°Culet: NoneDepth 66.2%

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 30
Current: $6,691 AUD|Low: $2,007 AUD|High: $15,418 AUD|Avg: $6,162 AUD|+9.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Taylor and Hart
October 30, 2026
Retailer 7$2,007 AUD
Retailer 4$2,256 AUD
Retailer 5$3,177 AUD
Retailer 6$6,263 AUD
Retailer 1$6,691 AUD
Retailer 2$7,179 AUD
Taylor and Hart$7,882 AUD
Retailer 3$15,418 AUD

7 data points across 8 retailers

6 retailers$2,007 AUD to $7,882 AUD

A
Cheapest Retailer
-
$2,007 AUD
$1,410 USD
Final sale: no returns
Retailer 2
-
$3,177 AUD
$2,232 USD
View
Price last confirmed 13 days ago
Retailer 3
-
$6,263 AUD
$4,400 USD
View
Price last confirmed 12 days ago
B
Retailer 4
-
$6,691 AUD
£3,701 GBP
View
Retailer 5
-
$7,179 AUD
£3,971 GBP
View
Price last confirmed 12 days ago
Most Expensive
B
Taylor and Hart
GU16R6T · Oct 30
$7,882 AUD
$5,536 USD
View
5 more retailers have this diamond
Prices start from $2,007 AUDSave up to $5,874 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
3.78ct Marquise
$2,007 AUD