Radiant|Lab Grown|IGI

1.42ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG621400286

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG621400286

Diamond specifications and retailer prices

From $357 AUD
$251 USD
As of October 30, 2026
Save $2,917 AUD (89%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $3,274 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.42ct lab-grown radiant diamond

This 1.42ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG621400286 or 621400286. Listed at 29 retailers as of October 30, 2026, with prices from $357 to $3,274, a $2,917 spread on the same certified stone. Brilliant Earth lists it at $3,274. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.42
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621400286
Dimensions5.67 × 5.67 × 3.78 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.67 mm5.67 mm1.42 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621400286
Side View
Table 64.0%Crown 43.6°Girdle: MediumPavilion 34.8°Culet: NoneDepth 66.7%

Caratlytics Score

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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: $3,274 AUD|Low: $357 AUD|High: $3,274 AUD|Avg: $1,101 AUD
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
November 1, 2026
Retailer 3$357 AUD
Retailer 10$400 AUD
Retailer 5$510 AUD
Retailer 4$626 AUD
Retailer 11$669 AUD
Retailer 9$738 AUD
Retailer 13$762 AUD
Retailer 7$813 AUD
Retailer 8$845 AUD
Retailer 14$1,080 AUD
Retailer 15$1,362 AUD
Retailer 6$1,498 AUD
Retailer 2$1,777 AUD
Retailer 12$1,791 AUD
Brilliant Earth$3,274 AUD

41 data points across 15 retailers

29 retailers$357 AUD to $3,274 AUD

A
Cheapest Retailer
-
$357 AUD
$251 USD
Retailer 2
-
$357 AUD
$251 USD
View
Price last confirmed 24 days ago
Retailer 3
-
$357 AUD
$251 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
$400 AUD
$281 USD
View
Final sale: no returns
Retailer 5
-
$414 AUD
$291 USD
View
Price last confirmed 35 days ago
Retailer 6
-
$438 AUD
$308 USD
View
Price last confirmed 34 days ago
Retailer 7
-
$444 AUD
$312 USD
View
Price last confirmed 29 days ago
A
Retailer 8
-
$510 AUD
HK$2,800 HKD
View
A
Retailer 9
-
$626 AUD
$440 USD
View
A
Retailer 10
-
$669 AUD
$470 USD
View
A
Retailer 11
-
$738 AUD
€494 EUR
View
A
Retailer 12
-
$762 AUD
ZAR 8,648 ZAR
View
A
Retailer 13
-
$813 AUD
$571 USD
View
A
Retailer 14
-
$845 AUD
£467 GBP
View
A
Retailer 15
-
$978 AUD
$687 USD
View
A
Retailer 16
-
$1,080 AUD
View
B+
Retailer 17
-
$1,362 AUD
$957 USD
View
Retailer 18
-
$1,426 AUD
$1,002 USD
View
Price last confirmed 22 days ago
B+
Retailer 19
-
$1,426 AUD
$1,002 USD
View
Retailer 20
-
$1,426 AUD
$1,002 USD
View
Price last confirmed 32 days ago
B+
Retailer 21
-
$1,486 AUD
$1,044 USD
View
B+
Retailer 22
-
$1,498 AUD
SGD 1,422 SGD
View
B+
Retailer 23
-
$1,499 AUD
$1,053 USD
View
B+
Retailer 24
-
$1,641 AUD
$1,153 USD
View
B+
Retailer 25
-
$1,777 AUD
£983 GBP
View
B+
Retailer 26
-
$1,791 AUD
View
B+
Retailer 27
-
$1,932 AUD
$1,357 USD
View
B
Retailer 28
-
$2,999 AUD
£1,659 GBP
View
Most Expensive
B
Brilliant Earth
9219881A · Oct 31
$3,274 AUD
$2,300 USD
View
28 more retailers have this diamond
Prices start from $357 AUDSave up to $2,917 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
1.42ct Radiant
$357 AUD