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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 $411 AUD
$289 USD
As of October 30, 2026
Save $2,365 AUD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,776 AUD 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 $411 to $2,776, a $2,365 spread on the same certified stone. Brilliant Earth lists it at $2,776. 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: $2,776 AUD|Low: $396 AUD|High: $2,861 AUD|Avg: $1,285 AUD|-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 17$411 AUD
Retailer 6$461 AUD
Retailer 4$478 AUD
Retailer 18$511 AUD
Retailer 12$540 AUD
Retailer 3$565 AUD
Retailer 9$715 AUD
Retailer 15$733 AUD
Retailer 14$803 AUD
Retailer 13$903 AUD
Retailer 10$1,177 AUD
Retailer 8$1,639 AUD
Retailer 11$1,711 AUD
Retailer 5$1,863 AUD
Retailer 2$2,047 AUD
Retailer 19$2,105 AUD
Retailer 16$2,114 AUD
Retailer 7$2,508 AUD
Brilliant Earth$2,776 AUD

41 data points across 19 retailers

19 retailers$411 AUD to $2,776 AUD

A
Cheapest Retailer
-
$411 AUD
$289 USD
A
Retailer 2
-
$461 AUD
$324 USD
View
Final sale: no returns
A
Retailer 3
-
$478 AUD
$336 USD
View
A
Retailer 4
-
$511 AUD
$359 USD
View
A
Retailer 5
-
$540 AUD
£299 GBP
View
A
Retailer 6
-
$565 AUD
HK$3,100 HKD
View
A
Retailer 7
-
$715 AUD
$502 USD
View
A
Retailer 8
-
$733 AUD
$515 USD
View
A
Retailer 9
-
$803 AUD
€537 EUR
View
A
Retailer 10
-
$903 AUD
£500 GBP
View
B+
Retailer 11
-
$1,177 AUD
$827 USD
View
B+
Retailer 12
-
$1,639 AUD
SGD 1,556 SGD
View
B+
Retailer 13
-
$1,711 AUD
$1,202 USD
View
B
Retailer 14
-
$1,902 AUD
$1,336 USD
View
B+
Retailer 15
-
$2,047 AUD
£1,132 GBP
View
B
Retailer 16
-
$2,105 AUD
$1,479 USD
View
Retailer 17
-
$2,114 AUD
$1,485 USD
View
Price last confirmed 11 days ago
B
Retailer 18
-
$2,508 AUD
$1,762 USD
View
Most Expensive
B
Brilliant Earth
14347199A · Oct 31
$2,776 AUD
$1,950 USD
View
18 more retailers have this diamond
Prices start from $411 AUDSave up to $2,365 AUD

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
$411 AUD