Asscher|Lab Grown|IGI

1.78ct F SI2 Asscher Lab Grown Diamond

ID • F/SI2 • IGI LG620447925

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG620447925

Diamond specifications and retailer prices

From $305 CAD
$218 USD
As of October 27, 2026
Save $1,180 CAD (79%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,676 CAD at MOH London · As of October 21, 2026
View at MOH London

About this 1.78ct lab-grown asscher diamond

This 1.78ct lab-grown asscher sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG620447925 or 620447925. Listed at 9 retailers as of October 27, 2026, with a 387% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.78
Carat
F
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle42.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620447925
Dimensions6.70 × 6.63 × 4.33 mm
L/W Ratio1.01
Culet sizePointed
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
6.70 mm6.63 mm1.78 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620447925
Side View
Table 65.0%Crown 33.2°Girdle: MediumPavilion 42.3°Culet: NoneDepth 65.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $1,676 CAD|Low: $305 CAD|High: $1,779 CAD|Avg: $1,009 CAD|-5.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 27, 2026
Retailer 4$305 CAD
Retailer 2$353 CAD
Retailer 5$534 CAD
Retailer 3$578 CAD
Retailer 9$645 CAD
Retailer 11$753 CAD
Retailer 10$1,129 CAD
Retailer 6$1,217 CAD
Retailer 7$1,338 CAD
Retailer 8$1,676 CAD
MOH London$1,676 CAD

33 data points across 11 retailers

9 retailers$305 CAD to $1,484 CAD

A
Cheapest Retailer
-
$305 CAD
$218 USD
A
Retailer 2
-
$353 CAD
$253 USD
View
A
Retailer 3
-
$534 CAD
£301 GBP
View
Retailer 4
-
$645 CAD
$462 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$1,217 CAD
$871 USD
View
Retailer 6
-
$1,338 CAD
$958 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$1,484 CAD
£837 GBP
View
Retailer 8
-
$1,676 CAD
$1,200 USD
View
Price last confirmed 7 days ago
Most Expensive
MOH London
LG620447925 · Oct 21
$1,676 CAD
£945 GBP
View
Price last confirmed 11 days ago
8 more retailers have this diamond
Prices start from $305 CADSave up to $1,180 CAD

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.

A
1.78ct Asscher
$305 CAD