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Marquise|Lab Grown|IGI

3.12ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG847655205

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG847655205

Diamond specifications and retailer prices

From $411 USD
As of November 1, 2026
Save $1,789 USD (81%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,200 USD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.12ct lab-grown marquise diamond

This 3.12ct 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 LG847655205 or 847655205. Listed at 3 retailers as of October 28, 2026, with prices from $411 to $2,200, a $1,789 spread on the same certified stone. Rare Carat lists it at $2,200. 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

3.12
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847655205
Dimensions15.43 × 7.69 × 4.73 mm
L/W Ratio2.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.43 mm7.69 mm3.12 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847655205
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $2,200 USD|Low: $411 USD|High: $2,200 USD|Avg: $1,048 USD
Rare Carat
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$411 USD
Retailer 2$859 USD
Rare Carat$2,200 USD

13 data points across 3 retailers

3 retailers$411 USD to $2,200 USD

A
Cheapest Retailer
-
$411 USD
Final sale: no returns
A
Retailer 2
-
$859 USD
£676 GBP
View
Most Expensive
B
Rare Carat
847655205 · Oct 28
$2,200 USD
View
2 more retailers have this diamond
Prices start from $411 USDSave up to $1,789 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
3.12ct Marquise
$411 USD