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Marquise|Lab Grown|IGI

3.91ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG810641631

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG810641631

Diamond specifications and retailer prices

From $992 NZD
$558 USD
As of November 3, 2026
Save $5,500 NZD (85%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $6,492 NZD at Frank Darling · As of November 3, 2026
View at Frank Darling

About this 3.91ct lab-grown marquise diamond

This 3.91ct 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 LG810641631 or 810641631. Listed at 5 retailers as of November 3, 2026, with prices from $992 to $6,492, a $5,500 spread on the same certified stone. Frank Darling lists it at $6,492. 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

3.91
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG810641631
Dimensions16.56 × 8.10 × 5.11 mm
L/W Ratio2.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.56 mm8.10 mm3.91 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG810641631
Side View
Table 59.0%Crown 35.6°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.1%

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: Nov 3
Current: $6,492 NZD|Low: $992 NZD|High: $6,492 NZD|Avg: $2,833 NZD|+0.0%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 28, 2026
Retailer 2$992 NZD
Retailer 4$1,385 NZD
Retailer 6$1,686 NZD
Retailer 5$3,604 NZD
Retailer 3$4,614 NZD
Frank Darling$6,492 NZD

14 data points across 6 retailers

5 retailers$992 NZD to $6,492 NZD

A
Cheapest Retailer
-
$992 NZD
$558 USD
Final sale: no returns
B+
Retailer 2
-
$1,385 NZD
$779 USD
View
B+
Retailer 3
-
$3,604 NZD
$2,027 USD
View
B+
Retailer 4
-
$4,614 NZD
$2,595 USD
View
Most Expensive
B
Frank Darling
100765882042KD · Nov 3
$6,492 NZD
$3,651 USD
View
4 more retailers have this diamond
Prices start from $992 NZDSave up to $5,500 NZD

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
3.91ct Marquise
$992 NZD