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Emerald|Lab Grown|IGI

1.66ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG550231699

Shape and cutting style on the report: Emerald cut

Certificate IGI LG550231699

Diamond specifications and retailer prices

From £162 GBP
$217 USD
As of November 1, 2026
Save £769 GBP (83%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,513 GBP at Brilliant Earth · As of October 10, 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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG550231699 or 550231699. Listed at 24 retailers as of November 1, 2026, with a 475% 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
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.3°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG550231699
Dimensions7.80 × 5.57 × 3.75 mm
L/W Ratio1.40
Culet sizeLong
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.80 mm5.57 mm1.66 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG550231699
Side View
Table 61.5%Crown 29.3°Girdle: MED-STKPavilion 39.8°Culet: LNGDepth 67.3%

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: Nov 1
Current: £1,513 GBP|Low: £155 GBP|High: £1,513 GBP|Avg: £526 GBP
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
Retailer 15
Retailer 16
November 2, 2026
Retailer 16£162 GBP
Retailer 7£180 GBP
Retailer 3£200 GBP
Retailer 14£268 GBP
Retailer 13£324 GBP
Retailer 10£346 GBP
Retailer 9£372 GBP
Retailer 6£450 GBP
Retailer 2£469 GBP
Retailer 12£488 GBP
Retailer 5£671 GBP
Retailer 15£745 GBP
Retailer 8£784 GBP
Retailer 11£804 GBP
Retailer 4£817 GBP
Brilliant Earth£1,513 GBP

45 data points across 16 retailers

24 retailers£162 GBP to £930 GBP

A
Cheapest Retailer
-
£162 GBP
$217 USD
A
Retailer 2
-
£180 GBP
$242 USD
View
Final sale: no returns
A
Retailer 3
-
£188 GBP
$252 USD
View
A
Retailer 4
-
£200 GBP
$269 USD
View
B+
Retailer 5
-
£268 GBP
$360 USD
View
A
Retailer 6
-
£324 GBP
€414 EUR
View
A
Retailer 7
-
£346 GBP
ZAR 7,511 ZAR
View
A
Retailer 8
-
£372 GBP
View
A
Retailer 9
-
£408 GBP
$548 USD
View
A
Retailer 10
-
£446 GBP
$599 USD
View
A
Retailer 11
-
£450 GBP
$604 USD
View
A
Retailer 12
-
£469 GBP
A$968 AUD
View
B+
Retailer 13
-
£488 GBP
$655 USD
View
Retailer 14
-
£521 GBP
$699 USD
View
Price last confirmed 7 days ago
B+
Retailer 15
-
£645 GBP
$866 USD
View
Retailer 16
-
£671 GBP
A$1,386 AUD
View
Price last confirmed 28 days ago
B+
Retailer 17
-
£685 GBP
$919 USD
View
B+
Retailer 18
-
£745 GBP
$1,000 USD
View
B
Retailer 19
-
£784 GBP
View
B
Retailer 20
-
£804 GBP
$1,079 USD
View
B+
Retailer 21
-
£804 GBP
View
B
Retailer 22
-
£817 GBP
$1,096 USD
View
B
Retailer 23
-
£930 GBP
$1,248 USD
View
Most Expensive
Brilliant Earth
16047215A · Oct 10
£1,513 GBP
$2,030 USD
View
Price last confirmed 23 days ago
23 more retailers have this diamond
Prices start from £162 GBPSave up to £769 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
£162 GBP