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Radiant|Lab Grown|IGI

1.22ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG660420878

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

Certificate IGI LG660420878

Diamond specifications and retailer prices

From HK$2,267 HKD
$289 USD
As of October 30, 2026
Save HK$13,032 HKD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$15,299 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.22ct lab-grown radiant diamond

This 1.22ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG660420878 or 660420878. Listed at 19 retailers as of October 30, 2026, with prices from HK$2,267 to HK$15,299, a HK$13,032 spread on the same certified stone. Brilliant Earth lists it at HK$15,299. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.22
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.8°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660420878
Dimensions7.62 × 5.20 × 3.39 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.62 mm5.20 mm1.22 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660420878
Side View
Table 64.0%Crown 47.8°Girdle: Slightly ThickPavilion 33.3°Culet: NoneDepth 65.2%

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: Oct 30
Current: HK$15,299 HKD|Low: HK$2,181 HKD|High: HK$15,770 HKD|Avg: HK$7,083 HKD|-3.0%
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
Retailer 19
November 1, 2026
Retailer 17HK$2,267 HKD
Retailer 6HK$2,542 HKD
Retailer 4HK$2,636 HKD
Retailer 18HK$2,817 HKD
Retailer 12HK$2,976 HKD
Retailer 3HK$3,113 HKD
Retailer 9HK$3,939 HKD
Retailer 15HK$4,041 HKD
Retailer 14HK$4,424 HKD
Retailer 13HK$4,978 HKD
Retailer 10HK$6,488 HKD
Retailer 8HK$9,034 HKD
Retailer 11HK$9,430 HKD
Retailer 5HK$10,270 HKD
Retailer 2HK$11,279 HKD
Retailer 19HK$11,600 HKD
Retailer 16HK$11,651 HKD
Retailer 7HK$13,824 HKD
Brilliant EarthHK$15,299 HKD

41 data points across 19 retailers

19 retailersHK$2,267 HKD to HK$15,299 HKD

A
Cheapest Retailer
-
HK$2,267 HKD
$289 USD
A
Retailer 2
-
HK$2,542 HKD
$324 USD
View
Final sale: no returns
A
Retailer 3
-
HK$2,636 HKD
$336 USD
View
A
Retailer 4
-
HK$2,817 HKD
$359 USD
View
A
Retailer 5
-
HK$2,976 HKD
£299 GBP
View
A
Retailer 6
-
HK$3,113 HKD
View
A
Retailer 7
-
HK$3,939 HKD
$502 USD
View
A
Retailer 8
-
HK$4,041 HKD
$515 USD
View
A
Retailer 9
-
HK$4,424 HKD
€537 EUR
View
A
Retailer 10
-
HK$4,978 HKD
£500 GBP
View
B+
Retailer 11
-
HK$6,488 HKD
$827 USD
View
B+
Retailer 12
-
HK$9,034 HKD
SGD 1,556 SGD
View
B+
Retailer 13
-
HK$9,430 HKD
$1,202 USD
View
B
Retailer 14
-
HK$10,482 HKD
$1,336 USD
View
B+
Retailer 15
-
HK$11,279 HKD
£1,132 GBP
View
B
Retailer 16
-
HK$11,600 HKD
$1,479 USD
View
Retailer 17
-
HK$11,651 HKD
$1,485 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
HK$13,824 HKD
$1,762 USD
View
Most Expensive
B
Brilliant Earth
14347199A · Oct 31
HK$15,299 HKD
$1,950 USD
View
18 more retailers have this diamond
Prices start from HK$2,267 HKDSave up to HK$13,032 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
1.22ct Radiant
HK$2,267 HKD