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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 $859 NZD
£381 GBP
As of October 30, 2026
Save $3,544 NZD (80%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,403 NZD 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 $859 to $4,403, a $3,544 spread on the same certified stone. Diamond Quarter lists it at $4,403. 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: $859 NZD|Low: $859 NZD|High: $13,112 NZD|Avg: $4,400 NZD|-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$859 NZD
Retailer 6$1,136 NZD
Retailer 4$1,277 NZD
Retailer 7$1,604 NZD
Retailer 5$1,664 NZD
Retailer 3$1,696 NZD
Retailer 8$2,472 NZD
Retailer 2$8,903 NZD
Retailer 10$9,699 NZD
Retailer 9$13,112 NZD

3 data points across 10 retailers

7 retailers$859 NZD to $4,403 NZD

A
Cheapest Retailer
-
$859 NZD
£381 GBP
A
Retailer 2
-
$1,136 NZD
HK$5,000 HKD
View
A
Retailer 3
-
$1,277 NZD
$720 USD
View
B+
Retailer 4
-
$1,604 NZD
$904 USD
View
A
Retailer 5
-
$1,664 NZD
$938 USD
View
A
Retailer 6
-
$1,696 NZD
£753 GBP
View
Most Expensive
B
Diamond Quarter
4.51SI1ELG74D48AN · Oct 29
$4,403 NZD
£1,954 GBP
View
6 more retailers have this diamond
Prices start from $859 NZDSave up to $3,544 NZD

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
$859 NZD