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Emerald|Lab Grown|IGI

1.66ct F SI1 Emerald Lab Grown Diamond

ID • F/SI1 • IGI LG595392388

Shape and cutting style on the report: Emerald cut

Certificate IGI LG595392388

Diamond specifications and retailer prices

From £139 GBP
$187 USD
As of October 27, 2026
Save £1,195 GBP (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,334 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG595392388 or 595392388. Listed at 9 retailers as of October 27, 2026, with prices from £139 to £1,334, a £1,195 spread on the same certified stone. Do Amore Diamonds lists it at £1,334. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG595392388
Dimensions7.96 × 5.54 × 3.78 mm
L/W Ratio1.44
Culet sizeLarge
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
7.96 mm5.54 mm1.66 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG595392388
Side View
Table 63.0%Crown 36.4°Girdle: MED-STKPavilion 41.9°Culet: LargeDepth 68.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £1,334 GBP|Low: £110 GBP|High: £1,364 GBP|Avg: £531 GBP|-2.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 26, 2026
Retailer 7£139 GBP
Retailer 9£158 GBP
Retailer 6£161 GBP
Retailer 5£303 GBP
Retailer 4£556 GBP
Retailer 10£567 GBP
Retailer 8£612 GBP
Retailer 3£645 GBP
Retailer 2£891 GBP
Do Amore Diamonds£1,334 GBP

21 data points across 10 retailers

9 retailers£139 GBP to £1,334 GBP

A
Cheapest Retailer
-
£139 GBP
$187 USD
A
Retailer 2
-
£161 GBP
$216 USD
View
Retailer 3
-
£303 GBP
$406 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£556 GBP
$746 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£612 GBP
$821 USD
View
Price last confirmed 8 days ago
Retailer 6
-
£637 GBP
$855 USD
View
Price last confirmed 15 days ago
Retailer 7
-
£645 GBP
$865 USD
View
Price last confirmed 15 days ago
Retailer 8
-
£891 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Do Amore Diamonds
27-9FDB1E242 · Oct 27
£1,334 GBP
$1,790 USD
View
8 more retailers have this diamond
Prices start from £139 GBPSave up to £1,195 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
£139 GBP