CaratHunter
Plans
Radiant|Lab Grown|IGI

1.66ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG844602074

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

Certificate IGI LG844602074

Diamond specifications and retailer prices

From $357 SGD
$279 USD
As of November 2, 2026
Save $3,979 SGD (92%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,335 SGD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG844602074 or 844602074. Listed at 18 retailers as of November 2, 2026, with prices from $357 to $4,335, a $3,979 spread on the same certified stone. Brilliant Earth lists it at $4,335. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844602074
Dimensions8.51 × 5.78 × 3.86 mm
L/W Ratio1.47
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
8.51 mm5.78 mm1.66 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844602074
Side View
Table 66.0%Crown 46°Girdle: Slightly ThickPavilion 33.5°Culet: NoneDepth 66.8%

Caratlytics Score

How it works →
A+
Exceptional
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: $4,335 SGD|Low: $357 SGD|High: $4,885 SGD|Avg: $1,696 SGD|-11.3%
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
Retailer 17
Retailer 18
November 2, 2026
Retailer 15$357 SGD
Retailer 6$413 SGD
Retailer 2$516 SGD
Retailer 12$646 SGD
Retailer 16$669 SGD
Retailer 3$730 SGD
Retailer 11$810 SGD
Retailer 14$1,137 SGD
Retailer 8$1,210 SGD
Retailer 18$1,358 SGD
Retailer 5$1,398 SGD
Retailer 4$1,568 SGD
Retailer 10$1,829 SGD
Retailer 13$1,965 SGD
Retailer 17$3,172 SGD
Retailer 9$3,677 SGD
Retailer 7$3,998 SGD
Brilliant Earth$4,335 SGD

18 data points across 18 retailers

18 retailers$357 SGD to $4,335 SGD

A+
Cheapest Retailer
-
$357 SGD
$279 USD
A
Retailer 2
-
$413 SGD
$323 USD
View
A
Retailer 3
-
$516 SGD
£318 GBP
View
A
Retailer 4
-
$646 SGD
$505 USD
View
A
Retailer 5
-
$669 SGD
$523 USD
View
A
Retailer 6
-
$730 SGD
$571 USD
View
A
Retailer 7
-
$810 SGD
€603 EUR
View
A
Retailer 8
-
$1,137 SGD
A$1,368 AUD
View
A
Retailer 9
-
$1,210 SGD
$946 USD
View
A
Retailer 10
-
$1,358 SGD
$1,062 USD
View
A
Retailer 11
-
$1,398 SGD
$1,093 USD
View
B+
Retailer 12
-
$1,568 SGD
$1,226 USD
View
Retailer 13
-
$1,829 SGD
$1,430 USD
View
Price last confirmed 17 days ago
B+
Retailer 14
-
$1,965 SGD
£1,210 GBP
View
B
Retailer 15
-
$3,172 SGD
$2,480 USD
View
B
Retailer 16
-
$3,677 SGD
$2,875 USD
View
B
Retailer 17
-
$3,998 SGD
$3,126 USD
View
Most Expensive
B
Brilliant Earth
22166202Y · Nov 2
$4,335 SGD
$3,390 USD
View
17 more retailers have this diamond
Prices start from $357 SGDSave up to $3,979 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
$357 SGD