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Asscher|Lab Grown|IGI

1.66ct D FL Asscher Lab Grown Diamond

ID • D/FL • IGI LG840634858

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG840634858

Diamond specifications and retailer prices

From $562 USD
£443 GBP
As of November 2, 2026
Save $3,138 USD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,700 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.66ct lab-grown asscher diamond

This 1.66ct lab-grown asscher sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840634858 or 840634858. Listed at 16 retailers as of November 2, 2026, with prices from $562 to $3,700, a $3,138 spread on the same certified stone. Brilliant Earth lists it at $3,700. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634858
Dimensions6.57 × 6.47 × 4.30 mm
L/W Ratio1.02
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
6.57 mm6.47 mm1.66 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634858
Side View
Table 66.0%Crown 35°Girdle: MediumPavilion 39.7°Culet: NoneDepth 66.5%

Caratlytics Score

How it works →
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 2
Current: $3,700 USD|Low: $562 USD|High: $5,290 USD|Avg: $1,794 USD|-30.1%
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 2$562 USD
Retailer 6$621 USD
Retailer 16$675 USD
Retailer 3$837 USD
Retailer 10$877 USD
Retailer 9$917 USD
Retailer 15$1,094 USD
Retailer 4$1,240 USD
Retailer 14$1,283 USD
Retailer 5$1,742 USD
Retailer 13$1,847 USD
Retailer 12$1,953 USD
Retailer 7$2,268 USD
Retailer 8$3,164 USD
Retailer 11$3,690 USD
Brilliant Earth$3,700 USD

18 data points across 16 retailers

16 retailers$562 USD to $3,700 USD

A
Cheapest Retailer
-
$562 USD
£443 GBP
A
Retailer 2
-
$621 USD
View
Final sale: no returns
A
Retailer 3
-
$675 USD
View
A
Retailer 4
-
$837 USD
View
A
Retailer 5
-
$877 USD
£691 GBP
View
A
Retailer 6
-
$917 USD
ZAR 14,819 ZAR
View
A
Retailer 7
-
$1,094 USD
€1,042 EUR
View
B+
Retailer 8
-
$1,240 USD
View
B+
Retailer 9
-
$1,283 USD
View
B+
Retailer 10
-
$1,742 USD
View
B+
Retailer 11
-
$1,847 USD
View
B+
Retailer 12
-
$1,953 USD
£1,538 GBP
View
B+
Retailer 13
-
$2,268 USD
SGD 3,065 SGD
View
B
Retailer 14
-
$3,164 USD
View
B
Retailer 15
-
$3,690 USD
View
Most Expensive
B
Brilliant Earth
21861625A · Nov 2
$3,700 USD
View
15 more retailers have this diamond
Prices start from $562 USDSave up to $3,138 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 Asscher
$562 USD