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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 £562 GBP
$748 USD
As of October 27, 2026
Save £2,010 GBP (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,572 GBP 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 27, 2026, with prices from £562 to £2,572, a £2,010 spread on the same certified stone. MOH London lists it at £2,572. 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 27
Current: £2,572 GBP|Low: £607 GBP|High: £2,593 GBP|Avg: £1,317 GBP|+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£607 GBP
Retailer 3£611 GBP
Retailer 7£785 GBP
Retailer 2£1,054 GBP
Retailer 8£1,075 GBP
Retailer 9£1,225 GBP
Retailer 6£1,866 GBP
Retailer 5£1,986 GBP
MOH London£2,572 GBP

10 data points across 9 retailers

7 retailers£562 GBP to £2,572 GBP

B+
Cheapest Retailer
-
£562 GBP
$748 USD
B+
Retailer 2
-
£611 GBP
$814 USD
View
B
Retailer 3
-
£652 GBP
$868 USD
View
B
Retailer 4
-
£1,054 GBP
$1,404 USD
View
C
Retailer 5
-
£1,832 GBP
$2,440 USD
View
C
Retailer 6
-
£1,986 GBP
CA$3,674 CAD
View
Most Expensive
C
MOH London
LG546230309 · Oct 29
£2,572 GBP
View
6 more retailers have this diamond
Prices start from £562 GBPSave up to £2,010 GBP

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
£562 GBP