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Marquise|Lab Grown|IGI

3.31ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG755509033

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG755509033

Diamond specifications and retailer prices

From $646 USD
As of November 1, 2026
Save $2,445 USD (79%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,091 USD at Frank Darling · As of October 28, 2026
View at Frank Darling

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 LG755509033 or 755509033. Listed at 6 retailers as of October 28, 2026, with prices from $646 to $3,091, a $2,445 spread on the same certified stone. Frank Darling lists it at $3,091. 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 angle34.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG755509033
Dimensions14.93 × 8.00 × 5.04 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizePointed
Top View
14.93 mm8.00 mm3.31 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG755509033
Side View
Table 60.0%Crown 34.6°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,091 USD|Low: $605 USD|High: $5,580 USD|Avg: $1,860 USD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 15$605 USD
Retailer 9$646 USD
Retailer 7$676 USD
Retailer 13$904 USD
Retailer 5$959 USD
Retailer 11$1,206 USD
Retailer 4$1,229 USD
Retailer 14$1,431 USD
Retailer 2$1,668 USD
Retailer 3$1,776 USD
Retailer 10$2,065 USD
Retailer 8$2,670 USD
Frank Darling$3,091 USD
Retailer 6$3,270 USD
Retailer 12$5,580 USD

2 data points across 15 retailers

6 retailers$646 USD to $3,091 USD

B+
Cheapest Retailer
-
$646 USD
B+
Retailer 2
-
$1,431 USD
CA$1,988 CAD
View
B+
Retailer 3
-
$1,668 USD
View
B+
Retailer 4
-
$2,065 USD
View
B
Retailer 5
-
$2,670 USD
View
Most Expensive
B
Frank Darling
100743325650KD · Oct 28
$3,091 USD
View
5 more retailers have this diamond
Prices start from $646 USDSave up to $2,445 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.

B+
3.31ct Marquise
$646 USD