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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 €258 EUR
$289 USD
As of November 2, 2026
Save €1,481 EUR (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €1,739 EUR at Brilliant Earth · As of November 2, 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 November 2, 2026, with prices from €258 to €1,739, a €1,481 spread on the same certified stone. Brilliant Earth lists it at €1,739. 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: Nov 2
Current: €1,739 EUR|Low: €248 EUR|High: €1,792 EUR|Avg: €787 EUR|-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
November 3, 2026
Retailer 15€258 EUR
Retailer 6€289 EUR
Retailer 4€300 EUR
Retailer 16€320 EUR
Retailer 10€338 EUR
Retailer 3€354 EUR
Retailer 9€448 EUR
Retailer 13€459 EUR
Retailer 12€503 EUR
Retailer 2€566 EUR
Retailer 8€1,027 EUR
Retailer 5€1,167 EUR
Retailer 11€1,282 EUR
Retailer 17€1,318 EUR
Retailer 14€1,324 EUR
Retailer 7€1,571 EUR
Brilliant Earth€1,739 EUR

42 data points across 17 retailers

19 retailers€258 EUR to €1,739 EUR

A
Cheapest Retailer
-
€258 EUR
$289 USD
A
Retailer 2
-
€289 EUR
$324 USD
View
Final sale: no returns
A
Retailer 3
-
€300 EUR
$336 USD
View
A
Retailer 4
-
€320 EUR
$359 USD
View
A
Retailer 5
-
€338 EUR
£299 GBP
View
A
Retailer 6
-
€354 EUR
HK$3,100 HKD
View
A
Retailer 7
-
€448 EUR
$502 USD
View
A
Retailer 8
-
€459 EUR
$515 USD
View
A
Retailer 9
-
€503 EUR
View
A
Retailer 10
-
€566 EUR
£500 GBP
View
B+
Retailer 11
-
€737 EUR
$827 USD
View
B+
Retailer 12
-
€1,027 EUR
SGD 1,556 SGD
View
B+
Retailer 13
-
€1,072 EUR
$1,202 USD
View
B
Retailer 14
-
€1,191 EUR
$1,336 USD
View
B+
Retailer 15
-
€1,282 EUR
£1,132 GBP
View
B
Retailer 16
-
€1,318 EUR
$1,479 USD
View
Retailer 17
-
€1,324 EUR
$1,485 USD
View
Price last confirmed 12 days ago
B
Retailer 18
-
€1,571 EUR
$1,762 USD
View
Most Expensive
B
Brilliant Earth
14347199A · Nov 2
€1,739 EUR
$1,950 USD
View
18 more retailers have this diamond
Prices start from €258 EURSave up to €1,481 EUR

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
€258 EUR