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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 $1,000 NZD
£443 GBP
As of November 2, 2026
Save $5,576 NZD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,576 NZD 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 $1,000 to $6,576, a $5,576 spread on the same certified stone. Brilliant Earth lists it at $6,576. 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
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $6,576 NZD|Low: $1,000 NZD|High: $9,402 NZD|Avg: $3,188 NZD|-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 9$1,000 NZD
Retailer 6$1,104 NZD
Retailer 16$1,200 NZD
Retailer 3$1,488 NZD
Retailer 11$1,559 NZD
Retailer 10$1,630 NZD
Retailer 15$1,945 NZD
Retailer 4$2,204 NZD
Retailer 2$2,307 NZD
Retailer 5$3,097 NZD
Retailer 14$3,283 NZD
Retailer 13$3,472 NZD
Retailer 7$4,031 NZD
Retailer 8$5,623 NZD
Retailer 12$6,558 NZD
Brilliant Earth$6,576 NZD

18 data points across 16 retailers

16 retailers$1,000 NZD to $6,576 NZD

A
Cheapest Retailer
-
$1,000 NZD
£443 GBP
A
Retailer 2
-
$1,104 NZD
$621 USD
View
Final sale: no returns
A
Retailer 3
-
$1,200 NZD
$675 USD
View
A
Retailer 4
-
$1,488 NZD
$837 USD
View
A
Retailer 5
-
$1,559 NZD
£691 GBP
View
A
Retailer 6
-
$1,630 NZD
ZAR 14,819 ZAR
View
A
Retailer 7
-
$1,945 NZD
€1,042 EUR
View
B+
Retailer 8
-
$2,204 NZD
$1,240 USD
View
B+
Retailer 9
-
$2,307 NZD
$1,298 USD
View
B+
Retailer 10
-
$3,097 NZD
$1,742 USD
View
B+
Retailer 11
-
$3,283 NZD
$1,847 USD
View
B+
Retailer 12
-
$3,472 NZD
£1,538 GBP
View
B+
Retailer 13
-
$4,031 NZD
SGD 3,065 SGD
View
B
Retailer 14
-
$5,623 NZD
$3,164 USD
View
B
Retailer 15
-
$6,558 NZD
$3,690 USD
View
Most Expensive
B
Brilliant Earth
21861625A · Nov 2
$6,576 NZD
$3,700 USD
View
15 more retailers have this diamond
Prices start from $1,000 NZDSave up to $5,576 NZD

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
$1,000 NZD