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Radiant|Lab Grown|IGI

1.66ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG825660150

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

Certificate IGI LG825660150

Diamond specifications and retailer prices

From HK$3,570 HKD
$455 USD
As of November 2, 2026
Save HK$20,203 HKD (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$29,892 HKD at Rare Carat · As of October 18, 2026
View at Rare Carat

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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825660150 or 825660150. Listed at 22 retailers as of October 31, 2026, with a 566% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.5°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660150
Dimensions7.97 × 5.88 × 4.05 mm
L/W Ratio1.36
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
7.97 mm5.88 mm1.66 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660150
Side View
Table 65.0%Crown 46.5°Girdle: MediumPavilion 36.4°Culet: NoneDepth 68.9%

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: HK$29,892 HKD|Low: HK$3,570 HKD|High: HK$30,245 HKD|Avg: HK$12,783 HKD|-1.2%
Rare Carat
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
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 2, 2026
Retailer 2HK$3,570 HKD
Retailer 3HK$4,660 HKD
Retailer 11HK$4,660 HKD
Retailer 5HK$5,162 HKD
Retailer 7HK$5,162 HKD
Retailer 20HK$6,237 HKD
Retailer 10HK$6,928 HKD
Retailer 17HK$7,843 HKD
Retailer 4HK$7,995 HKD
Retailer 13HK$8,011 HKD
Retailer 19HK$8,874 HKD
Retailer 9HK$10,058 HKD
Retailer 22HK$11,557 HKD
Retailer 8HK$13,581 HKD
Retailer 12HK$15,066 HKD
Retailer 14HK$16,291 HKD
Retailer 15HK$16,776 HKD
Retailer 21HK$18,022 HKD
Retailer 16HK$21,552 HKD
Retailer 6HK$22,564 HKD
Retailer 18HK$23,772 HKD
Rare CaratHK$29,892 HKD

33 data points across 22 retailers

22 retailersHK$3,570 HKD to HK$23,772 HKD

A
Cheapest Retailer
-
HK$3,570 HKD
$455 USD
A
Retailer 2
-
HK$4,660 HKD
$594 USD
View
Final sale: no returns
A
Retailer 3
-
HK$4,660 HKD
$594 USD
View
Retailer 4
-
HK$5,162 HKD
$658 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
HK$5,162 HKD
$658 USD
View
A
Retailer 6
-
HK$6,237 HKD
$795 USD
View
A
Retailer 7
-
HK$6,928 HKD
$883 USD
View
A
Retailer 8
-
HK$7,843 HKD
€952 EUR
View
A
Retailer 9
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HK$7,995 HKD
$1,019 USD
View
A
Retailer 10
-
HK$8,011 HKD
£804 GBP
View
A
Retailer 11
-
HK$8,874 HKD
ZAR 18,272 ZAR
View
B+
Retailer 12
-
HK$10,058 HKD
$1,282 USD
View
B+
Retailer 13
-
HK$11,557 HKD
$1,473 USD
View
B+
Retailer 14
-
HK$13,581 HKD
$1,731 USD
View
B+
Retailer 15
-
HK$15,066 HKD
£1,512 GBP
View
B+
Retailer 16
-
HK$16,291 HKD
SGD 2,806 SGD
View
B+
Retailer 17
-
HK$16,776 HKD
$2,138 USD
View
B+
Retailer 18
-
HK$18,022 HKD
$2,297 USD
View
B
Retailer 19
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HK$21,552 HKD
£2,163 GBP
View
B
Retailer 20
-
HK$22,564 HKD
$2,876 USD
View
B
Retailer 21
-
HK$23,772 HKD
$3,030 USD
View
Most Expensive
Rare Carat
PE-239738 · Oct 18
HK$29,892 HKD
$3,810 USD
View
Price last confirmed 14 days ago
21 more retailers have this diamond
Prices start from HK$3,570 HKDSave up to HK$20,203 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$3,570 HKD