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Emerald|Lab Grown|IGI

1.66ct E VVS1 Emerald Lab Grown Diamond

EX • E/VVS1 • IGI LG833660591

Shape and cutting style on the report: Emerald cut

Certificate IGI LG833660591

Diamond specifications and retailer prices

From £207 GBP
$277 USD
As of October 30, 2026
Save £247 GBP (54%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,194 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG833660591 or 833660591. Listed at 3 retailers as of October 30, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
E
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833660591
Dimensions7.71 × 5.69 × 3.89 mm
L/W Ratio1.36
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.71 mm5.69 mm1.66 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833660591
Side View
Table 63.0%Crown 37.7°Girdle: MediumPavilion 39.7°Culet: LargeDepth 68.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £1,194 GBP|Low: £152 GBP|High: £1,217 GBP|Avg: £486 GBP|-1.8%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 3£207 GBP
Retailer 4£355 GBP
Retailer 5£378 GBP
Retailer 2£454 GBP
Rare Carat£1,194 GBP

37 data points across 5 retailers

3 retailers£207 GBP to £454 GBP

A
Cheapest Retailer
-
£207 GBP
$277 USD
Final sale: no returns
A
Retailer 2
-
£454 GBP
View
Most Expensive
Rare Carat
833660591 · Oct 18
£1,194 GBP
$1,600 USD
View
Price last confirmed 12 days ago
2 more retailers have this diamond
Prices start from £207 GBPSave up to £247 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
£207 GBP