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Marquise|Lab Grown|IGI

1.71ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG811683879

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG811683879

Diamond specifications and retailer prices

From $435 USD
As of November 1, 2026
Save $865 USD (67%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,300 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.71ct lab-grown marquise diamond

This 1.71ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG811683879 or 811683879. Listed at 6 retailers as of October 29, 2026, with prices from $435 to $1,300, a $865 spread on the same certified stone. MOH London lists it at $1,300. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811683879
Dimensions12.59 × 6.05 × 3.91 mm
L/W Ratio2.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.59 mm6.05 mm1.71 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811683879
Side View
Table 60.0%Crown 35.7°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 64.6%

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 1
Current: $1,300 USD|Low: $435 USD|High: $1,309 USD|Avg: $781 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 3$435 USD
Retailer 5$605 USD
Retailer 2$612 USD
Retailer 4$669 USD
Retailer 6$1,089 USD
MOH London$1,300 USD

41 data points across 6 retailers

6 retailers$435 USD to $1,300 USD

B+
Cheapest Retailer
-
$435 USD
A
Retailer 2
-
$605 USD
View
A
Retailer 3
-
$612 USD
£482 GBP
View
A
Retailer 4
-
$669 USD
View
B+
Retailer 5
-
$1,089 USD
View
Most Expensive
B+
MOH London
LG811683879 · Oct 29
$1,300 USD
£1,024 GBP
View
5 more retailers have this diamond
Prices start from $435 USDSave up to $865 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
1.71ct Marquise
$435 USD