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 $289 USD
As of October 30, 2026
Save $1,661 USD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,950 USD at Brilliant Earth · As of October 29, 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 29, 2026, with prices from $289 to $1,950, a $1,661 spread on the same certified stone. Brilliant Earth lists it at $1,950. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,950 USD|Low: $278 USD|High: $2,010 USD|Avg: $907 USD|-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
October 30, 2026
Retailer 17$289 USD
Retailer 6$324 USD
Retailer 4$336 USD
Retailer 18$359 USD
Retailer 2$380 USD
Retailer 3$397 USD
Retailer 9$502 USD
Retailer 13$515 USD
Retailer 15$563 USD
Retailer 12$634 USD
Retailer 10$827 USD
Retailer 8$1,151 USD
Retailer 11$1,202 USD
Retailer 5$1,309 USD
Retailer 14$1,439 USD
Retailer 19$1,479 USD
Retailer 16$1,485 USD
Retailer 7$1,762 USD
Brilliant Earth$1,950 USD

42 data points across 19 retailers

19 retailers$289 USD to $1,950 USD

A
Cheapest Retailer
-
$289 USD
A
Retailer 2
-
$324 USD
View
Final sale: no returns
A
Retailer 3
-
$336 USD
View
A
Retailer 4
-
$359 USD
View
A
Retailer 5
-
$380 USD
£300 GBP
View
A
Retailer 6
-
$397 USD
HK$3,100 HKD
View
A
Retailer 7
-
$502 USD
View
A
Retailer 8
-
$515 USD
View
Retailer 9
-
$563 USD
€536 EUR
View
Price last confirmed 7 days ago
A
Retailer 10
-
$634 USD
£500 GBP
View
B+
Retailer 11
-
$827 USD
View
B+
Retailer 12
-
$1,151 USD
SGD 1,556 SGD
View
B+
Retailer 13
-
$1,202 USD
View
B
Retailer 14
-
$1,336 USD
View
B+
Retailer 15
-
$1,439 USD
£1,133 GBP
View
B
Retailer 16
-
$1,479 USD
View
Retailer 17
-
$1,485 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
$1,762 USD
View
Most Expensive
B
Brilliant Earth
14347199A · Oct 29
$1,950 USD
View
18 more retailers have this diamond
Prices start from $289 USDSave up to $1,661 USD

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
$289 USD