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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 $514 NZD
$289 USD
As of October 30, 2026
Save $2,952 NZD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,466 NZD 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 $514 to $3,466, a $2,952 spread on the same certified stone. Brilliant Earth lists it at $3,466. 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

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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: $3,466 NZD|Low: $494 NZD|High: $3,572 NZD|Avg: $1,605 NZD|-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$514 NZD
Retailer 6$576 NZD
Retailer 4$597 NZD
Retailer 18$638 NZD
Retailer 12$674 NZD
Retailer 3$705 NZD
Retailer 9$892 NZD
Retailer 15$915 NZD
Retailer 14$1,002 NZD
Retailer 13$1,128 NZD
Retailer 10$1,470 NZD
Retailer 8$2,046 NZD
Retailer 11$2,136 NZD
Retailer 5$2,326 NZD
Retailer 2$2,555 NZD
Retailer 19$2,628 NZD
Retailer 16$2,639 NZD
Retailer 7$3,132 NZD
Brilliant Earth$3,466 NZD

41 data points across 19 retailers

19 retailers$514 NZD to $3,466 NZD

A
Cheapest Retailer
-
$514 NZD
$289 USD
A
Retailer 2
-
$576 NZD
$324 USD
View
Final sale: no returns
A
Retailer 3
-
$597 NZD
$336 USD
View
A
Retailer 4
-
$638 NZD
$359 USD
View
A
Retailer 5
-
$674 NZD
£299 GBP
View
A
Retailer 6
-
$705 NZD
HK$3,100 HKD
View
A
Retailer 7
-
$892 NZD
$502 USD
View
A
Retailer 8
-
$915 NZD
$515 USD
View
A
Retailer 9
-
$1,002 NZD
€537 EUR
View
A
Retailer 10
-
$1,128 NZD
£500 GBP
View
B+
Retailer 11
-
$1,470 NZD
$827 USD
View
B+
Retailer 12
-
$2,046 NZD
SGD 1,556 SGD
View
B+
Retailer 13
-
$2,136 NZD
$1,202 USD
View
B
Retailer 14
-
$2,374 NZD
$1,336 USD
View
B+
Retailer 15
-
$2,555 NZD
£1,132 GBP
View
B
Retailer 16
-
$2,628 NZD
$1,479 USD
View
Retailer 17
-
$2,639 NZD
$1,485 USD
View
Price last confirmed 12 days ago
B
Retailer 18
-
$3,132 NZD
$1,762 USD
View
Most Expensive
B
Brilliant Earth
14347199A · Oct 31
$3,466 NZD
$1,950 USD
View
18 more retailers have this diamond
Prices start from $514 NZDSave up to $2,952 NZD

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
$514 NZD