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Emerald|Lab Grown|IGI

1.66ct D IF Emerald Lab Grown Diamond

ID • D/IF • IGI LG662408415

Shape and cutting style on the report: Emerald cut

Certificate IGI LG662408415

Diamond specifications and retailer prices

From £250 GBP
$336 USD
As of November 1, 2026
Save £2,522 GBP (91%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £2,772 GBP at Brilliant Earth · As of November 2, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG662408415 or 662408415. Listed at 26 retailers as of November 1, 2026, with prices from £250 to £2,772, a £2,522 spread on the same certified stone. Brilliant Earth lists it at £2,772. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662408415
Dimensions7.68 × 5.51 × 3.73 mm
L/W Ratio1.39
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
7.68 mm5.51 mm1.66 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662408415
Side View
Table 61.0%Crown 34.8°Girdle: Slightly ThickPavilion 41.1°Culet: LNGDepth 67.7%

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: £2,772 GBP|Low: £224 GBP|High: £3,219 GBP|Avg: £756 GBP|-13.9%
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
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 9£224 GBP
Retailer 11£250 GBP
Retailer 6£259 GBP
Retailer 10£273 GBP
Retailer 3£277 GBP
Retailer 13£395 GBP
Retailer 15£454 GBP
Retailer 8£475 GBP
Retailer 12£478 GBP
Retailer 2£492 GBP
Retailer 17£646 GBP
Retailer 18£671 GBP
Retailer 7£888 GBP
Retailer 5£891 GBP
Retailer 4£975 GBP
Retailer 16£1,117 GBP
Retailer 14£1,140 GBP
Retailer 19£2,087 GBP
Brilliant Earth£2,772 GBP

43 data points across 19 retailers

26 retailers£250 GBP to £2,772 GBP

Retailer 1
-
£224 GBP
$300 USD
Price last confirmed 33 days ago
A
Retailer 2
-
£250 GBP
$336 USD
View
Final sale: no returns
Retailer 3
-
£259 GBP
$348 USD
View
Price last confirmed 38 days ago
Retailer 4
-
£273 GBP
$367 USD
View
Price last confirmed 34 days ago
Retailer 5
-
£277 GBP
$372 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
£305 GBP
HK$3,200 HKD
View
A
Retailer 7
-
£373 GBP
$500 USD
View
A
Retailer 8
-
£395 GBP
$530 USD
View
A
Retailer 9
-
£454 GBP
€580 EUR
View
A
Retailer 10
-
£475 GBP
$637 USD
View
A
Retailer 11
-
£478 GBP
ZAR 10,366 ZAR
View
A
Retailer 12
-
£492 GBP
View
A
Retailer 13
-
£646 GBP
A$1,334 AUD
View
A
Retailer 14
-
£671 GBP
$901 USD
View
Retailer 15
-
£718 GBP
$963 USD
View
Price last confirmed 7 days ago
B+
Retailer 16
-
£888 GBP
SGD 1,611 SGD
View
B+
Retailer 17
-
£891 GBP
$1,195 USD
View
Retailer 18
-
£891 GBP
$1,196 USD
View
Price last confirmed 33 days ago
B+
Retailer 19
-
£927 GBP
$1,244 USD
View
B+
Retailer 20
-
£975 GBP
$1,308 USD
View
B+
Retailer 21
-
£1,066 GBP
$1,430 USD
View
B+
Retailer 22
-
£1,117 GBP
View
B+
Retailer 23
-
£1,127 GBP
$1,513 USD
View
B+
Retailer 24
-
£1,140 GBP
A$2,354 AUD
View
B
Retailer 25
-
£2,087 GBP
$2,800 USD
View
Most Expensive
B
Brilliant Earth
14067393A · Nov 2
£2,772 GBP
$3,720 USD
View
25 more retailers have this diamond
Prices start from £250 GBPSave up to £2,522 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
£250 GBP