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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 $748 USD
As of October 30, 2026
Save $2,677 USD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,425 USD 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 $748 to $3,425, a $2,677 spread on the same certified stone. MOH London lists it at $3,425. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,425 USD|Low: $808 USD|High: $3,453 USD|Avg: $1,754 USD|+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$808 USD
Retailer 3$814 USD
Retailer 7$1,045 USD
Retailer 2$1,404 USD
Retailer 8$1,432 USD
Retailer 9$1,632 USD
Retailer 6$2,485 USD
Retailer 5$2,645 USD
MOH London$3,425 USD

10 data points across 9 retailers

7 retailers$748 USD to $3,425 USD

B+
Cheapest Retailer
-
$748 USD
B
Retailer 2
-
$814 USD
View
B
Retailer 3
-
$868 USD
View
B
Retailer 4
-
$1,404 USD
View
C
Retailer 5
-
$2,440 USD
View
C
Retailer 6
-
$2,645 USD
CA$3,674 CAD
View
Most Expensive
C
MOH London
LG546230309 · Oct 29
$3,425 USD
£2,697 GBP
View
6 more retailers have this diamond
Prices start from $748 USDSave up to $2,677 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+
1.78ct Emerald
$748 USD