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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 $2,423 NZD
$1,360 USD
As of October 28, 2026
Save $7,349 NZD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,772 NZD at MOH London · As of October 29, 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 October 28, 2026, with prices from $2,423 to $9,772, a $7,349 spread on the same certified stone. MOH London lists it at $9,772. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $9,772 NZD|Low: $2,423 NZD|High: $9,849 NZD|Avg: $4,851 NZD|+0.5%
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
October 29, 2026
Retailer 8$2,423 NZD
Retailer 7$2,934 NZD
Retailer 13$3,192 NZD
Retailer 14$3,285 NZD
Retailer 9$3,403 NZD
Retailer 12$3,403 NZD
Retailer 3$3,706 NZD
Retailer 6$3,721 NZD
Retailer 4$4,571 NZD
Retailer 10$5,348 NZD
Retailer 2$5,868 NZD
Retailer 11$6,380 NZD
Retailer 5$9,745 NZD
MOH London$9,772 NZD

18 data points across 14 retailers

11 retailers$2,423 NZD to $9,772 NZD

B+
Cheapest Retailer
-
$2,423 NZD
$1,360 USD
B
Retailer 2
-
$2,934 NZD
$1,647 USD
View
B+
Retailer 3
-
$3,192 NZD
$1,792 USD
View
B+
Retailer 4
-
$3,285 NZD
$1,844 USD
View
Final sale: no returns
B
Retailer 5
-
$3,403 NZD
$1,910 USD
View
B
Retailer 6
-
$3,403 NZD
$1,910 USD
View
Price last confirmed 16 days ago
B
Retailer 7
-
$3,706 NZD
$2,080 USD
View
B
Retailer 8
-
$5,348 NZD
$3,002 USD
View
B
Retailer 9
-
$5,868 NZD
$3,294 USD
View
B
Retailer 10
-
$6,380 NZD
$3,581 USD
View
Most Expensive
B
MOH London
LG508156151 · Oct 29
$9,772 NZD
£4,319 GBP
View
10 more retailers have this diamond
Prices start from $2,423 NZDSave up to $7,349 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.

B+
1.73ct Emerald
$2,423 NZD