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Radiant|Lab Grown|IGI

1.30ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG623421879

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

Certificate IGI LG623421879

Diamond specifications and retailer prices

From $376 AUD
$264 USD
As of October 30, 2026
Save $2,799 AUD (88%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,175 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.3ct lab-grown radiant diamond

This 1.3ct 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 LG623421879 or 623421879. Listed at 24 retailers as of October 30, 2026, with prices from $376 to $3,175, a $2,799 spread on the same certified stone. Brilliant Earth lists it at $3,175. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.30
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle51.7°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623421879
Dimensions7.43 × 5.47 × 3.60 mm
L/W Ratio1.36
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
7.43 mm5.47 mm1.30 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623421879
Side View
Table 61.0%Crown 51.7°Girdle: MED-STKPavilion 33.4°Culet: NoneDepth 65.8%

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: $3,175 AUD|Low: $360 AUD|High: $3,175 AUD|Avg: $1,147 AUD|+0.5%
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
November 1, 2026
Retailer 4$376 AUD
Retailer 5$466 AUD
Retailer 8$466 AUD
Retailer 11$492 AUD
Retailer 7$626 AUD
Retailer 17$690 AUD
Retailer 13$737 AUD
Retailer 16$799 AUD
Retailer 9$827 AUD
Retailer 12$890 AUD
Retailer 15$1,132 AUD
Retailer 3$1,184 AUD
Retailer 10$1,277 AUD
Retailer 6$1,495 AUD
Retailer 14$1,629 AUD
Retailer 2$1,864 AUD
Retailer 18$2,605 AUD
Brilliant Earth$3,175 AUD

38 data points across 18 retailers

24 retailers$376 AUD to $3,175 AUD

A
Cheapest Retailer
-
$376 AUD
$264 USD
A
Retailer 2
-
$419 AUD
$294 USD
View
Final sale: no returns
A
Retailer 3
-
$436 AUD
$306 USD
View
Retailer 4
-
$466 AUD
$327 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$466 AUD
$327 USD
View
A
Retailer 6
-
$492 AUD
£272 GBP
View
A
Retailer 7
-
$626 AUD
$440 USD
View
A
Retailer 8
-
$690 AUD
$485 USD
View
A
Retailer 9
-
$737 AUD
€493 EUR
View
A
Retailer 10
-
$799 AUD
ZAR 9,070 ZAR
View
A
Retailer 11
-
$827 AUD
$581 USD
View
A
Retailer 12
-
$890 AUD
£493 GBP
View
A
Retailer 13
-
$1,132 AUD
View
B+
Retailer 14
-
$1,184 AUD
$832 USD
View
B+
Retailer 15
-
$1,277 AUD
$897 USD
View
Retailer 16
-
$1,305 AUD
$917 USD
View
Price last confirmed 24 days ago
B+
Retailer 17
-
$1,495 AUD
$1,050 USD
View
B+
Retailer 18
-
$1,568 AUD
$1,102 USD
View
B+
Retailer 19
-
$1,629 AUD
View
B+
Retailer 20
-
$1,639 AUD
$1,151 USD
View
B+
Retailer 21
-
$1,864 AUD
£1,031 GBP
View
B
Retailer 22
-
$1,988 AUD
$1,396 USD
View
Retailer 23
-
$2,605 AUD
$1,830 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
9399402A · Oct 31
$3,175 AUD
$2,230 USD
View
23 more retailers have this diamond
Prices start from $376 AUDSave up to $2,799 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
1.30ct Radiant
$376 AUD