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Asscher|Lab Grown|IGI

1.21ct E SI1 Asscher Lab Grown Diamond

EX • E/SI1 • IGI LG668425893

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG668425893

Diamond specifications and retailer prices

From $496 USD
As of October 30, 2026
Save $104 USD (17%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $600 USD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.21ct lab-grown asscher diamond

This 1.21ct lab-grown asscher sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG668425893 or 668425893. Listed at 2 retailers as of October 29, 2026, with prices from $496 to $600, a $104 spread on the same certified stone. Diamond Quarter lists it at $600. 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

1.21
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668425893
Dimensions6.03 × 5.93 × 3.78 mm
L/W Ratio1.02
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.03 mm5.93 mm1.21 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668425893
Side View
Table 68.0%Crown 37.2°Girdle: MediumPavilion 37.2°Culet: NoneDepth 63.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $496 USD|Low: $485 USD|High: $723 USD|Avg: $565 USD|-31.4%
September 23, 2026
Retailer 1$496 USD

4 data points across 1 retailer

2 retailers$496 USD to $600 USD

B+
Cheapest Retailer
-
$496 USD
Most Expensive
B
Diamond Quarter
1.21SI1ELG93ACEEN · Oct 29
$600 USD
£472 GBP
View
1 more retailer has this diamond
Prices start from $496 USDSave up to $104 USD

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+
1.21ct Asscher
$496 USD