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Marquise|Lab Grown|IGI

3.78ct G VVS2 Marquise Lab Grown Diamond

EX • G/VVS2 • IGI LG847642126

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG847642126

Diamond specifications and retailer prices

From $743 AUD
$522 USD
As of November 1, 2026
Save $4,040 AUD (84%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,783 AUD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.78ct lab-grown marquise diamond

This 3.78ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG847642126 or 847642126. Listed at 3 retailers as of October 28, 2026, with prices from $743 to $4,783, a $4,040 spread on the same certified stone. Rare Carat lists it at $4,783. 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

3.78
Carat
G
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847642126
Dimensions16.99 × 8.11 × 4.93 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.99 mm8.11 mm3.78 ctG / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847642126
Side View
Table 63.0%Crown 36°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $4,783 AUD|Low: $743 AUD|High: $4,783 AUD|Avg: $2,086 AUD
Rare Carat
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$743 AUD
Retailer 2$1,417 AUD
Rare Carat$4,783 AUD

12 data points across 3 retailers

3 retailers$743 AUD to $4,783 AUD

A
Cheapest Retailer
-
$743 AUD
$522 USD
Final sale: no returns
A
Retailer 2
-
$1,417 AUD
£784 GBP
View
Most Expensive
B
Rare Carat
847642126 · Oct 28
$4,783 AUD
$3,360 USD
View
2 more retailers have this diamond
Prices start from $743 AUDSave up to $4,040 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
$743 AUD