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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 HK$2,189 HKD
$279 USD
As of November 2, 2026
Save HK$24,409 HKD (92%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$26,598 HKD 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 HK$2,189 to HK$26,598, a HK$24,409 spread on the same certified stone. Brilliant Earth lists it at HK$26,598. 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: HK$26,598 HKD|Low: HK$2,189 HKD|High: HK$29,972 HKD|Avg: HK$10,407 HKD|-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 15HK$2,189 HKD
Retailer 6HK$2,534 HKD
Retailer 2HK$3,165 HKD
Retailer 12HK$3,962 HKD
Retailer 16HK$4,104 HKD
Retailer 3HK$4,480 HKD
Retailer 11HK$4,968 HKD
Retailer 14HK$6,977 HKD
Retailer 8HK$7,422 HKD
Retailer 18HK$8,333 HKD
Retailer 5HK$8,576 HKD
Retailer 4HK$9,619 HKD
Retailer 10HK$11,220 HKD
Retailer 13HK$12,057 HKD
Retailer 17HK$19,458 HKD
Retailer 9HK$22,558 HKD
Retailer 7HK$24,527 HKD
Brilliant EarthHK$26,598 HKD

18 data points across 18 retailers

18 retailersHK$2,189 HKD to HK$26,598 HKD

A+
Cheapest Retailer
-
HK$2,189 HKD
$279 USD
A
Retailer 2
-
HK$2,534 HKD
$323 USD
View
A
Retailer 3
-
HK$3,165 HKD
£318 GBP
View
A
Retailer 4
-
HK$3,962 HKD
$505 USD
View
A
Retailer 5
-
HK$4,104 HKD
$523 USD
View
A
Retailer 6
-
HK$4,480 HKD
$571 USD
View
A
Retailer 7
-
HK$4,968 HKD
€603 EUR
View
A
Retailer 8
-
HK$6,977 HKD
A$1,368 AUD
View
A
Retailer 9
-
HK$7,422 HKD
$946 USD
View
A
Retailer 10
-
HK$8,333 HKD
$1,062 USD
View
A
Retailer 11
-
HK$8,576 HKD
$1,093 USD
View
B+
Retailer 12
-
HK$9,619 HKD
$1,226 USD
View
Retailer 13
-
HK$11,220 HKD
$1,430 USD
View
Price last confirmed 17 days ago
B+
Retailer 14
-
HK$12,057 HKD
£1,210 GBP
View
B
Retailer 15
-
HK$19,458 HKD
$2,480 USD
View
B
Retailer 16
-
HK$22,558 HKD
$2,875 USD
View
B
Retailer 17
-
HK$24,527 HKD
$3,126 USD
View
Most Expensive
B
Brilliant Earth
22166202Y · Nov 2
HK$26,598 HKD
$3,390 USD
View
17 more retailers have this diamond
Prices start from HK$2,189 HKDSave up to HK$24,409 HKD

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
HK$2,189 HKD