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Emerald|Lab Grown|IGI

1.71ct G SI1 Emerald Lab Grown Diamond

ID • G/SI1 • IGI LG22178204

Shape and cutting style on the report: Emerald cut

Certificate IGI LG22178204

Diamond specifications and retailer prices

From $424 USD
As of October 25, 2026
Save $653 USD (61%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,077 USD at MOH London · As of October 25, 2026
View at MOH London

About this 1.71ct lab-grown emerald diamond

This 1.71ct lab-grown emerald sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG22178204 or 22178204. Listed at 2 retailers as of October 25, 2026, with prices from $424 to $1,077, a $653 spread on the same certified stone. MOH London lists it at $1,077. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.71
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG22178204
Dimensions7.85 × 5.70 × 3.88 mm
L/W Ratio1.38
Culet sizeLarge
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by Chemical Vapor Depostition (CVD) growth process.
Top View
7.85 mm5.70 mm1.71 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG22178204
Side View
Table 61.0%Crown 35.5°Girdle: Slightly ThickPavilion 39°Culet: LargeDepth 68.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 25
Current: $1,077 USD|Low: $419 USD|High: $1,153 USD|Avg: $683 USD|-6.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 25, 2026
Retailer 2$424 USD
Retailer 4$452 USD
Retailer 5$555 USD
Retailer 3$839 USD
MOH London$1,077 USD

11 data points across 5 retailers

2 retailers$424 USD to $1,077 USD

B+
Cheapest Retailer
-
$424 USD
Most Expensive
B
MOH London
LG22178204 · Oct 25
$1,077 USD
£848 GBP
View
1 more retailer has this diamond
Prices start from $424 USDSave up to $653 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+
1.71ct Emerald
$424 USD