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Asscher|Lab Grown|IGI

1.64ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG519228955

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG519228955

Diamond specifications and retailer prices

From $627 NZD
$352 USD
As of October 30, 2026
Save $1,336 NZD (68%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,429 NZD at MOH London · As of October 21, 2026
View at MOH London

About this 1.64ct lab-grown asscher diamond

This 1.64ct lab-grown asscher sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG519228955 or 519228955. Listed at 4 retailers as of October 23, 2026, with a 213% 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

1.64
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle25°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG519228955
Dimensions6.45 × 6.44 × 4.35 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.45 mm6.44 mm1.64 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG519228955
Side View
Table 63.0%Crown 25°Girdle: MediumPavilion 40.6°Culet: NoneDepth 67.5%

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 30
Current: $2,429 NZD|Low: $627 NZD|High: $2,447 NZD|Avg: $1,254 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 25, 2026
Retailer 2$627 NZD
Retailer 5$972 NZD
Retailer 4$1,039 NZD
Retailer 3$1,963 NZD
MOH London$2,429 NZD

37 data points across 5 retailers

4 retailers$627 NZD to $1,963 NZD

B+
Cheapest Retailer
-
$627 NZD
$352 USD
Retailer 2
-
$1,039 NZD
£460 GBP
View
Price last confirmed 7 days ago
B
Retailer 3
-
$1,963 NZD
$1,102 USD
View
Most Expensive
MOH London
LG519228955 · Oct 21
$2,429 NZD
£1,074 GBP
View
Price last confirmed 9 days ago
3 more retailers have this diamond
Prices start from $627 NZDSave up to $1,336 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.

B+
1.64ct Asscher
$627 NZD