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Asscher|Lab Grown|IGI

4.51ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG685582274

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG685582274

Diamond specifications and retailer prices

From $677 CAD
£381 GBP
As of October 30, 2026
Save $2,796 CAD (80%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,473 CAD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 4.51ct lab-grown asscher diamond

This 4.51ct lab-grown asscher sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685582274 or 685582274. Listed at 7 retailers as of October 29, 2026, with prices from $677 to $3,473, a $2,796 spread on the same certified stone. Diamond Quarter lists it at $3,473. 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

4.51
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685582274
Dimensions9.16 × 9.13 × 5.96 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.16 mm9.13 mm4.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685582274
Side View
Table 67.0%Crown 38.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 65.3%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $677 CAD|Low: $677 CAD|High: $10,343 CAD|Avg: $3,471 CAD|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 1$677 CAD
Retailer 6$896 CAD
Retailer 4$1,008 CAD
Retailer 7$1,265 CAD
Retailer 5$1,313 CAD
Retailer 3$1,338 CAD
Retailer 8$1,950 CAD
Retailer 2$7,023 CAD
Retailer 10$7,651 CAD
Retailer 9$10,343 CAD

3 data points across 10 retailers

7 retailers$677 CAD to $3,473 CAD

A
Cheapest Retailer
-
$677 CAD
£381 GBP
A
Retailer 2
-
$896 CAD
HK$5,000 HKD
View
A
Retailer 3
-
$1,008 CAD
$720 USD
View
B+
Retailer 4
-
$1,265 CAD
$904 USD
View
A
Retailer 5
-
$1,313 CAD
$938 USD
View
A
Retailer 6
-
$1,338 CAD
£753 GBP
View
Most Expensive
B
Diamond Quarter
4.51SI1ELG74D48AN · Oct 29
$3,473 CAD
£1,954 GBP
View
6 more retailers have this diamond
Prices start from $677 CADSave up to $2,796 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
4.51ct Asscher
$677 CAD