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Emerald|Lab Grown|IGI

1.66ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG569321546

Shape and cutting style on the report: Emerald cut

Certificate IGI LG569321546

Diamond specifications and retailer prices

From £128 GBP
$172 USD
As of October 27, 2026
Save £1,103 GBP (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,231 GBP at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

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 LG569321546 or 569321546. Listed at 10 retailers as of October 27, 2026, with prices from £128 to £1,231, a £1,103 spread on the same certified stone. Do Amore Diamonds lists it at £1,231. 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 angle34.6°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG569321546
Dimensions8.18 × 5.57 × 3.78 mm
L/W Ratio1.47
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
8.18 mm5.57 mm1.66 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG569321546
Side View
Table 62.0%Crown 34.6°Girdle: MediumPavilion 38.8°Culet: LNGDepth 67.9%

Caratlytics Score

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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: Oct 27
Current: £143 GBP|Low: £117 GBP|High: £829 GBP|Avg: £388 GBP|+22.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 27, 2026
Retailer 5£128 GBP
Retailer 1£143 GBP
Retailer 10£149 GBP
Retailer 6£159 GBP
Retailer 7£283 GBP
Retailer 3£290 GBP
Retailer 9£563 GBP
Retailer 8£672 GBP
Retailer 2£790 GBP
Retailer 4£825 GBP

26 data points across 10 retailers

10 retailers£128 GBP to £1,231 GBP

A
Cheapest Retailer
-
£128 GBP
$172 USD
A
Retailer 2
-
£149 GBP
$199 USD
View
A
Retailer 3
-
£159 GBP
$213 USD
View
B+
Retailer 4
-
£283 GBP
$379 USD
View
A
Retailer 5
-
£290 GBP
€370 EUR
View
Retailer 6
-
£563 GBP
$755 USD
View
Price last confirmed 7 days ago
B
Retailer 7
-
£672 GBP
$900 USD
View
B
Retailer 8
-
£697 GBP
$934 USD
View
Retailer 9
-
£825 GBP
View
Price last confirmed 11 days ago
Most Expensive
B
Do Amore Diamonds
27-8B79C4AC8 · Oct 27
£1,231 GBP
$1,650 USD
View
9 more retailers have this diamond
Prices start from £128 GBPSave up to £1,103 GBP

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
£128 GBP