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Marquise|Lab Grown|IGI

3.10ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG774630755

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG774630755

Diamond specifications and retailer prices

From $427 USD
As of October 31, 2026
Save $2,468 USD (85%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,170 USD at Brilliant Earth · As of October 6, 2026
View at Brilliant Earth

About this 3.1ct lab-grown marquise diamond

This 3.1ct 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 LG774630755 or 774630755. Listed at 6 retailers as of October 31, 2026, with a 578% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.10
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG774630755
Dimensions15.45 × 7.42 × 4.70 mm
L/W Ratio2.08
Girdle conditionFaceted
Culet sizePointed
Top View
15.45 mm7.42 mm3.10 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG774630755
Side View
Table 61.0%Crown 35.7°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 63.3%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $3,170 USD|Low: $427 USD|High: $3,260 USD|Avg: $1,392 USD|-2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 6$427 USD
Retailer 9$612 USD
Retailer 3$744 USD
Retailer 12$765 USD
Retailer 10$866 USD
Retailer 4$952 USD
Retailer 13$1,063 USD
Retailer 5$1,216 USD
Retailer 11$1,509 USD
Retailer 2$1,563 USD
Retailer 7$2,175 USD
Retailer 8$2,895 USD
Brilliant Earth$3,170 USD

26 data points across 13 retailers

6 retailers$427 USD to $2,895 USD

A
Cheapest Retailer
-
$427 USD
Final sale: no returns
B+
Retailer 2
-
$612 USD
View
B+
Retailer 3
-
$1,563 USD
View
B+
Retailer 4
-
$2,175 USD
View
B
Retailer 5
-
$2,895 USD
View
Most Expensive
Brilliant Earth
19396307A · Oct 6
$3,170 USD
View
Price last confirmed 25 days ago
5 more retailers have this diamond
Prices start from $427 USDSave up to $2,468 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
3.10ct Marquise
$427 USD