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Marquise|Lab Grown|IGI

3.31ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG845657227

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG845657227

Diamond specifications and retailer prices

From $434 USD
As of October 31, 2026
Save $2,666 USD (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,100 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.31ct lab-grown marquise diamond

This 3.31ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG845657227 or 845657227. Listed at 4 retailers as of October 30, 2026, with prices from $434 to $3,100, a $2,666 spread on the same certified stone. Brilliant Earth lists it at $3,100. 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

3.31
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845657227
Dimensions16.13 × 7.73 × 4.74 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
16.13 mm7.73 mm3.31 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845657227
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $3,100 USD|Low: $434 USD|High: $3,100 USD|Avg: $1,388 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 3$434 USD
Retailer 2$812 USD
Retailer 4$2,680 USD
Brilliant Earth$3,100 USD

12 data points across 4 retailers

4 retailers$434 USD to $3,100 USD

A
Cheapest Retailer
-
$434 USD
Final sale: no returns
A
Retailer 2
-
$812 USD
£639 GBP
View
B
Retailer 3
-
$2,680 USD
View
Most Expensive
B
Brilliant Earth
22309145A · Oct 30
$3,100 USD
View
3 more retailers have this diamond
Prices start from $434 USDSave up to $2,666 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
3.31ct Marquise
$434 USD