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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 $689 AUD
£381 GBP
As of October 30, 2026
Save $2,843 AUD (80%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,532 AUD 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 $689 to $3,532, a $2,843 spread on the same certified stone. Diamond Quarter lists it at $3,532. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $689 AUD|Low: $689 AUD|High: $10,519 AUD|Avg: $3,530 AUD|-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$689 AUD
Retailer 6$911 AUD
Retailer 4$1,025 AUD
Retailer 7$1,287 AUD
Retailer 5$1,335 AUD
Retailer 3$1,361 AUD
Retailer 8$1,983 AUD
Retailer 2$7,142 AUD
Retailer 10$7,781 AUD
Retailer 9$10,519 AUD

3 data points across 10 retailers

7 retailers$689 AUD to $3,532 AUD

A
Cheapest Retailer
-
$689 AUD
£381 GBP
A
Retailer 2
-
$911 AUD
HK$5,000 HKD
View
A
Retailer 3
-
$1,025 AUD
$720 USD
View
B+
Retailer 4
-
$1,287 AUD
$904 USD
View
A
Retailer 5
-
$1,335 AUD
$938 USD
View
A
Retailer 6
-
$1,361 AUD
£753 GBP
View
Most Expensive
B
Diamond Quarter
4.51SI1ELG74D48AN · Oct 29
$3,532 AUD
£1,954 GBP
View
6 more retailers have this diamond
Prices start from $689 AUDSave up to $2,843 AUD

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
$689 AUD