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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 $725 SGD
$567 USD
As of November 2, 2026
Save $5,708 SGD (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,433 SGD 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 $725 to $6,433, a $5,708 spread on the same certified stone. Do Amore Diamonds lists it at $6,433. 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: $6,433 SGD|Low: $725 SGD|High: $7,520 SGD|Avg: $2,763 SGD|-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$725 SGD
Retailer 14$812 SGD
Retailer 6$964 SGD
Retailer 10$1,065 SGD
Retailer 4$1,081 SGD
Retailer 5$1,308 SGD
Retailer 9$1,384 SGD
Retailer 2$1,591 SGD
Retailer 11$2,230 SGD
Retailer 12$2,609 SGD
Retailer 13$3,914 SGD
Retailer 7$4,706 SGD
Retailer 3$5,064 SGD
Do Amore Diamonds$6,433 SGD

31 data points across 14 retailers

14 retailers$725 SGD to $6,433 SGD

A
Cheapest Retailer
-
$725 SGD
$567 USD
A
Retailer 2
-
$812 SGD
$635 USD
View
A
Retailer 3
-
$964 SGD
$754 USD
View
Final sale: no returns
A
Retailer 4
-
$1,065 SGD
$833 USD
View
A
Retailer 5
-
$1,081 SGD
$845 USD
View
A
Retailer 6
-
$1,308 SGD
$1,023 USD
View
A
Retailer 7
-
$1,384 SGD
$1,082 USD
View
B+
Retailer 8
-
$1,591 SGD
€1,185 EUR
View
B+
Retailer 9
-
$2,230 SGD
$1,744 USD
View
B+
Retailer 10
-
$2,609 SGD
$2,040 USD
View
B
Retailer 11
-
$3,914 SGD
£2,410 GBP
View
B
Retailer 12
-
$4,706 SGD
$3,680 USD
View
B
Retailer 13
-
$5,064 SGD
$3,960 USD
View
Most Expensive
B
Do Amore Diamonds
27-C7490B28A · Nov 1
$6,433 SGD
$5,030 USD
View
13 more retailers have this diamond
Prices start from $725 SGDSave up to $5,708 SGD

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
$725 SGD