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Emerald|Lab Grown|IGI

1.78ct G SI1 Emerald Lab Grown Diamond

GD • G/SI1 • IGI LG546230309

Shape and cutting style on the report: Emerald cut

Certificate IGI LG546230309

Diamond specifications and retailer prices

From $1,327 NZD
$748 USD
As of October 30, 2026
Save $4,750 NZD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,077 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.78ct lab-grown emerald diamond

This 1.78ct 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 standard cut grade and certified by IGI LG546230309 or 546230309. Listed at 7 retailers as of October 29, 2026, with prices from $1,327 to $6,077, a $4,750 spread on the same certified stone. MOH London lists it at $6,077. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.78
Carat
G
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG546230309
Dimensions8.73 × 5.84 × 3.60 mm
L/W Ratio1.49
Culet sizeLarge
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
8.73 mm5.84 mm1.78 ctG / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG546230309
Side View
Table 66.5%Crown 36.5°Girdle: MediumPavilion 37.7°Culet: LargeDepth 61.6%

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 30
Current: $6,077 NZD|Low: $1,434 NZD|High: $6,127 NZD|Avg: $3,112 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 4$1,434 NZD
Retailer 3$1,444 NZD
Retailer 7$1,854 NZD
Retailer 2$2,491 NZD
Retailer 8$2,540 NZD
Retailer 9$2,896 NZD
Retailer 6$4,410 NZD
Retailer 5$4,693 NZD
MOH London$6,077 NZD

10 data points across 9 retailers

7 retailers$1,327 NZD to $6,077 NZD

B+
Cheapest Retailer
-
$1,327 NZD
$748 USD
B
Retailer 2
-
$1,444 NZD
$814 USD
View
B
Retailer 3
-
$1,540 NZD
$868 USD
View
B
Retailer 4
-
$2,491 NZD
$1,404 USD
View
C
Retailer 5
-
$4,329 NZD
$2,440 USD
View
C
Retailer 6
-
$4,693 NZD
CA$3,674 CAD
View
Most Expensive
C
MOH London
LG546230309 · Oct 29
$6,077 NZD
£2,697 GBP
View
6 more retailers have this diamond
Prices start from $1,327 NZDSave up to $4,750 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+
1.78ct Emerald
$1,327 NZD