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Marquise|Lab Grown|IGI

3.78ct G VVS2 Marquise Lab Grown Diamond

EX • G/VVS2 • IGI LG812618564

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812618564

Diamond specifications and retailer prices

From $516 USD
As of October 31, 2026
Save $2,844 USD (85%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,360 USD 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 LG812618564 or 812618564. Listed at 3 retailers as of October 28, 2026, with prices from $516 to $3,360, a $2,844 spread on the same certified stone. Rare Carat lists it at $3,360. 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
Color
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812618564
Dimensions16.83 × 8.04 × 4.94 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
16.83 mm8.04 mm3.78 ctG / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812618564
Side View
Table 62.0%Crown 35.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $3,360 USD|Low: $510 USD|High: $3,410 USD|Avg: $1,409 USD|-1.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 3$516 USD
Retailer 5$797 USD
Retailer 4$960 USD
Retailer 2$986 USD
Retailer 6$1,462 USD
Retailer 7$1,710 USD
Rare Carat$3,360 USD

36 data points across 7 retailers

3 retailers$516 USD to $3,360 USD

A
Cheapest Retailer
-
$516 USD
Final sale: no returns
A
Retailer 2
-
$986 USD
£776 GBP
View
Most Expensive
B
Rare Carat
812618564 · Oct 28
$3,360 USD
View
2 more retailers have this diamond
Prices start from $516 USDSave up to $2,844 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
3.78ct Marquise
$516 USD