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Emerald|Lab Grown|IGI

1.73ct H SI1 Emerald Lab Grown Diamond

ID • H/SI1 • IGI LG508156151

Shape and cutting style on the report: Emerald cut

Certificate IGI LG508156151

Diamond specifications and retailer prices

From $1,360 USD
As of November 4, 2026
Save $4,096 USD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,456 USD at MOH London · As of November 3, 2026
View at MOH London

About this 1.73ct lab-grown emerald diamond

This 1.73ct lab-grown emerald sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG508156151 or 508156151. Listed at 11 retailers as of November 3, 2026, with prices from $1,360 to $5,456, a $4,096 spread on the same certified stone. MOH London lists it at $5,456. 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

1.73
Carat
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle17.5°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508156151
Dimensions8.21 × 5.87 × 3.66 mm
L/W Ratio1.40
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.21 mm5.87 mm1.73 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508156151
Side View
Table 65.5%Crown 17.5°Girdle: MED-STKPavilion 35°Culet: LNGDepth 62.4%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $5,456 USD|Low: $1,360 USD|High: $5,528 USD|Avg: $2,724 USD
MOH London
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
November 1, 2026
Retailer 8$1,360 USD
Retailer 7$1,647 USD
Retailer 13$1,792 USD
Retailer 14$1,844 USD
Retailer 9$1,910 USD
Retailer 12$1,910 USD
Retailer 3$2,080 USD
Retailer 6$2,088 USD
Retailer 4$2,566 USD
Retailer 10$3,002 USD
Retailer 2$3,294 USD
Retailer 11$3,581 USD
MOH London$5,456 USD
Retailer 5$5,469 USD

16 data points across 14 retailers

11 retailers$1,360 USD to $5,456 USD

B+
Cheapest Retailer
-
$1,360 USD
B+
Retailer 2
-
$1,647 USD
View
B
Retailer 3
-
$1,792 USD
View
B
Retailer 4
-
$1,844 USD
View
Final sale: no returns
B
Retailer 5
-
$1,910 USD
View
Retailer 6
-
$1,910 USD
View
Price last confirmed 25 days ago
B
Retailer 7
-
$2,080 USD
View
B
Retailer 8
-
$3,002 USD
View
B
Retailer 9
-
$3,294 USD
View
B
Retailer 10
-
$3,581 USD
View
Most Expensive
B
MOH London
LG508156151 · Nov 3
$5,456 USD
£4,296 GBP
View
10 more retailers have this diamond
Prices start from $1,360 USDSave up to $4,096 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+
1.73ct Emerald
$1,360 USD