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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 $336 USD
As of November 1, 2026
Save $3,384 USD (91%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $3,720 USD at Brilliant Earth · As of October 31, 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 October 31, 2026, with prices from $336 to $3,720, a $3,384 spread on the same certified stone. Brilliant Earth lists it at $3,720. 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
Color
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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Price History

Last verified: Nov 1
Current: $3,720 USD|Low: $300 USD|High: $4,320 USD|Avg: $1,014 USD|-13.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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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$300 USD
Retailer 11$336 USD
Retailer 6$348 USD
Retailer 10$367 USD
Retailer 3$372 USD
Retailer 13$530 USD
Retailer 15$609 USD
Retailer 8$637 USD
Retailer 12$642 USD
Retailer 2$660 USD
Retailer 17$867 USD
Retailer 18$901 USD
Retailer 7$1,192 USD
Retailer 5$1,196 USD
Retailer 4$1,308 USD
Retailer 16$1,499 USD
Retailer 14$1,530 USD
Retailer 19$2,800 USD
Brilliant Earth$3,720 USD

43 data points across 19 retailers

26 retailers$336 USD to $3,720 USD

Retailer 1
-
$300 USD
Price last confirmed 33 days ago
A
Retailer 2
-
$336 USD
View
Final sale: no returns
Retailer 3
-
$348 USD
View
Price last confirmed 38 days ago
Retailer 4
-
$367 USD
View
Price last confirmed 34 days ago
Retailer 5
-
$372 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$410 USD
HK$3,200 HKD
View
A
Retailer 7
-
$500 USD
View
A
Retailer 8
-
$530 USD
View
A
Retailer 9
-
$609 USD
€580 EUR
View
A
Retailer 10
-
$637 USD
View
A
Retailer 11
-
$642 USD
ZAR 10,366 ZAR
View
A
Retailer 12
-
$660 USD
£520 GBP
View
A
Retailer 13
-
$867 USD
A$1,334 AUD
View
A
Retailer 14
-
$901 USD
View
Retailer 15
-
$963 USD
View
Price last confirmed 7 days ago
B+
Retailer 16
-
$1,192 USD
SGD 1,611 SGD
View
B+
Retailer 17
-
$1,195 USD
View
Retailer 18
-
$1,196 USD
View
Price last confirmed 33 days ago
B+
Retailer 19
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$1,244 USD
View
B+
Retailer 20
-
$1,308 USD
View
B+
Retailer 21
-
$1,430 USD
View
B+
Retailer 22
-
$1,499 USD
£1,180 GBP
View
B+
Retailer 23
-
$1,513 USD
View
B+
Retailer 24
-
$1,530 USD
A$2,354 AUD
View
B
Retailer 25
-
$2,800 USD
View
Most Expensive
B
Brilliant Earth
14067393A · Oct 31
$3,720 USD
View
25 more retailers have this diamond
Prices start from $336 USDSave up to $3,384 USD

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
$336 USD