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Emerald|Lab Grown|IGI

1.66ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG626437419

Shape and cutting style on the report: Emerald cut

Certificate IGI LG626437419

Diamond specifications and retailer prices

From $302 AUD
$212 USD
As of November 1, 2026
Save $1,435 AUD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,737 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.66ct lab-grown emerald diamond

This 1.66ct lab-grown emerald 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 LG626437419 or 626437419. Listed at 15 retailers as of October 31, 2026, with prices from $302 to $1,737, a $1,435 spread on the same certified stone. Brilliant Earth lists it at $1,737. 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

1.66
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle43.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG626437419
Dimensions8.31 × 5.68 × 3.72 mm
L/W Ratio1.46
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.31 mm5.68 mm1.66 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG626437419
Side View
Table 64.0%Crown 34.7°Girdle: MediumPavilion 43.6°Culet: LNGDepth 65.5%

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: Nov 1
Current: $1,737 AUD|Low: $251 AUD|High: $1,822 AUD|Avg: $880 AUD|-4.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 3$302 AUD
Retailer 10$350 AUD
Retailer 12$374 AUD
Retailer 13$374 AUD
Retailer 8$581 AUD
Retailer 5$645 AUD
Retailer 2$694 AUD
Retailer 4$853 AUD
Retailer 14$1,206 AUD
Retailer 11$1,210 AUD
Retailer 7$1,303 AUD
Retailer 9$1,511 AUD
Retailer 6$1,570 AUD
Brilliant Earth$1,737 AUD

40 data points across 14 retailers

15 retailers$302 AUD to $1,737 AUD

A
Cheapest Retailer
-
$302 AUD
$212 USD
A
Retailer 2
-
$350 AUD
$246 USD
View
A
Retailer 3
-
$374 AUD
$263 USD
View
Retailer 4
-
$374 AUD
$263 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$581 AUD
€389 EUR
View
B+
Retailer 6
-
$645 AUD
$453 USD
View
B+
Retailer 7
-
$694 AUD
£384 GBP
View
B+
Retailer 8
-
$853 AUD
$599 USD
View
B
Retailer 9
-
$1,206 AUD
$847 USD
View
B
Retailer 10
-
$1,210 AUD
$850 USD
View
B
Retailer 11
-
$1,288 AUD
$905 USD
View
B
Retailer 12
-
$1,303 AUD
$915 USD
View
B
Retailer 13
-
$1,511 AUD
£836 GBP
View
B
Retailer 14
-
$1,570 AUD
$1,103 USD
View
Most Expensive
B
Brilliant Earth
9811875A · Oct 31
$1,737 AUD
$1,220 USD
View
14 more retailers have this diamond
Prices start from $302 AUDSave up to $1,435 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
1.66ct Emerald
$302 AUD