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Marquise|Lab Grown|IGI

3.17ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG841675389

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG841675389

Diamond specifications and retailer prices

From $392 USD
As of November 1, 2026
Save $2,588 USD (87%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,980 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.17ct lab-grown marquise diamond

This 3.17ct 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 LG841675389 or 841675389. Listed at 4 retailers as of October 28, 2026, with prices from $392 to $2,980, a $2,588 spread on the same certified stone. Brilliant Earth lists it at $2,980. 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

3.17
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841675389
Dimensions15.57 × 7.42 × 4.72 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.57 mm7.42 mm3.17 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841675389
Side View
Table 62.0%Crown 35.5°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $2,980 USD|Low: $392 USD|High: $3,050 USD|Avg: $1,690 USD|-2.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 3$392 USD
Retailer 2$816 USD
Retailer 4$2,250 USD
Brilliant Earth$2,980 USD

24 data points across 4 retailers

4 retailers$392 USD to $2,980 USD

A
Cheapest Retailer
-
$392 USD
Final sale: no returns
A
Retailer 2
-
$816 USD
£642 GBP
View
B
Retailer 3
-
$2,250 USD
View
Most Expensive
B
Brilliant Earth
21726498A · Oct 28
$2,980 USD
View
3 more retailers have this diamond
Prices start from $392 USDSave up to $2,588 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
3.17ct Marquise
$392 USD