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Radiant|Lab Grown|IGI

1.66ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG800676877

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG800676877

Diamond specifications and retailer prices

From $809 AUD
$567 USD
As of November 2, 2026
Save $6,368 AUD (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,177 AUD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.66ct lab-grown radiant diamond

This 1.66ct lab-grown radiant 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 LG800676877 or 800676877. Listed at 14 retailers as of November 1, 2026, with prices from $809 to $7,177, a $6,368 spread on the same certified stone. Do Amore Diamonds lists it at $7,177. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800676877
Dimensions8.55 × 5.88 × 3.87 mm
L/W Ratio1.45
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
8.55 mm5.88 mm1.66 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800676877
Side View
Table 62.0%Crown 40.8°Girdle: Slightly ThickPavilion 34.1°Culet: NoneDepth 65.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $7,177 AUD|Low: $809 AUD|High: $8,390 AUD|Avg: $3,082 AUD|-14.5%
Do Amore Diamonds
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
October 31, 2026
Retailer 8$809 AUD
Retailer 14$906 AUD
Retailer 6$1,076 AUD
Retailer 10$1,189 AUD
Retailer 4$1,206 AUD
Retailer 5$1,460 AUD
Retailer 9$1,544 AUD
Retailer 2$1,775 AUD
Retailer 11$2,489 AUD
Retailer 12$2,911 AUD
Retailer 13$4,367 AUD
Retailer 7$5,251 AUD
Retailer 3$5,651 AUD
Do Amore Diamonds$7,177 AUD

31 data points across 14 retailers

14 retailers$809 AUD to $7,177 AUD

A
Cheapest Retailer
-
$809 AUD
$567 USD
A
Retailer 2
-
$906 AUD
$635 USD
View
A
Retailer 3
-
$1,076 AUD
$754 USD
View
Final sale: no returns
A
Retailer 4
-
$1,189 AUD
$833 USD
View
A
Retailer 5
-
$1,206 AUD
$845 USD
View
A
Retailer 6
-
$1,460 AUD
$1,023 USD
View
A
Retailer 7
-
$1,544 AUD
$1,082 USD
View
B+
Retailer 8
-
$1,775 AUD
€1,185 EUR
View
B+
Retailer 9
-
$2,489 AUD
$1,744 USD
View
B+
Retailer 10
-
$2,911 AUD
$2,040 USD
View
B
Retailer 11
-
$4,367 AUD
£2,410 GBP
View
B
Retailer 12
-
$5,251 AUD
$3,680 USD
View
B
Retailer 13
-
$5,651 AUD
$3,960 USD
View
Most Expensive
B
Do Amore Diamonds
27-C7490B28A · Nov 1
$7,177 AUD
$5,030 USD
View
13 more retailers have this diamond
Prices start from $809 AUDSave up to $6,368 AUD

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 Radiant
$809 AUD