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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 $369 SGD
$289 USD
As of October 30, 2026
Save $2,123 SGD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,493 SGD 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 $369 to $2,493, a $2,123 spread on the same certified stone. Brilliant Earth lists it at $2,493. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,493 SGD|Low: $355 SGD|High: $2,570 SGD|Avg: $1,159 SGD|-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$369 SGD
Retailer 6$414 SGD
Retailer 4$430 SGD
Retailer 18$459 SGD
Retailer 2$486 SGD
Retailer 3$507 SGD
Retailer 9$642 SGD
Retailer 13$658 SGD
Retailer 15$719 SGD
Retailer 12$811 SGD
Retailer 10$1,057 SGD
Retailer 8$1,472 SGD
Retailer 11$1,537 SGD
Retailer 5$1,673 SGD
Retailer 14$1,840 SGD
Retailer 19$1,890 SGD
Retailer 16$1,898 SGD
Retailer 7$2,253 SGD
Brilliant Earth$2,493 SGD

42 data points across 19 retailers

19 retailers$369 SGD to $2,493 SGD

A
Cheapest Retailer
-
$369 SGD
$289 USD
A
Retailer 2
-
$414 SGD
$324 USD
View
Final sale: no returns
A
Retailer 3
-
$430 SGD
$336 USD
View
A
Retailer 4
-
$459 SGD
$359 USD
View
A
Retailer 5
-
$486 SGD
£300 GBP
View
A
Retailer 6
-
$507 SGD
HK$3,100 HKD
View
A
Retailer 7
-
$642 SGD
$502 USD
View
A
Retailer 8
-
$658 SGD
$515 USD
View
Retailer 9
-
$719 SGD
€536 EUR
View
Price last confirmed 7 days ago
A
Retailer 10
-
$811 SGD
£500 GBP
View
B+
Retailer 11
-
$1,057 SGD
$827 USD
View
B+
Retailer 12
-
$1,472 SGD
View
B+
Retailer 13
-
$1,537 SGD
$1,202 USD
View
B
Retailer 14
-
$1,708 SGD
$1,336 USD
View
B+
Retailer 15
-
$1,840 SGD
£1,133 GBP
View
B
Retailer 16
-
$1,890 SGD
$1,479 USD
View
Retailer 17
-
$1,898 SGD
$1,485 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
$2,253 SGD
$1,762 USD
View
Most Expensive
B
Brilliant Earth
14347199A · Oct 29
$2,493 SGD
$1,950 USD
View
18 more retailers have this diamond
Prices start from $369 SGDSave up to $2,123 SGD

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
$369 SGD