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Radiant|Lab Grown|IGI

1.51ct E FL Radiant Lab Grown Diamond

EX • E/FL • IGI LG800679081

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

Certificate IGI LG800679081

Diamond specifications and retailer prices

From $929 AUD
HK$5,100 HKD
As of October 30, 2026
Save $3,156 AUD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,086 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800679081 or 800679081. Listed at 10 retailers as of October 30, 2026, with prices from $929 to $4,086, a $3,156 spread on the same certified stone. Brilliant Earth lists it at $4,086. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.7°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800679081
Dimensions8.12 × 5.86 × 3.72 mm
L/W Ratio1.39
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
8.12 mm5.86 mm1.51 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800679081
Side View
Table 59.0%Crown 45.7°Girdle: Slightly ThickPavilion 33.4°Culet: NoneDepth 63.5%

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: $4,086 AUD|Low: $929 AUD|High: $5,623 AUD|Avg: $2,569 AUD|-27.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5$929 AUD
Retailer 9$1,146 AUD
Retailer 4$1,244 AUD
Retailer 2$1,343 AUD
Retailer 8$1,526 AUD
Retailer 7$1,892 AUD
Retailer 6$2,650 AUD
Retailer 10$2,795 AUD
Retailer 3$2,981 AUD
Brilliant Earth$4,086 AUD

42 data points across 10 retailers

10 retailers$929 AUD to $4,086 AUD

A
Cheapest Retailer
-
$929 AUD
HK$5,100 HKD
A
Retailer 2
-
$1,146 AUD
$805 USD
View
Retailer 3
-
$1,244 AUD
€832 EUR
View
Price last confirmed 7 days ago
A
Retailer 4
-
$1,343 AUD
£743 GBP
View
B+
Retailer 5
-
$1,526 AUD
$1,072 USD
View
B+
Retailer 6
-
$1,892 AUD
$1,329 USD
View
B
Retailer 7
-
$2,650 AUD
$1,862 USD
View
B
Retailer 8
-
$2,795 AUD
$1,963 USD
View
B
Retailer 9
-
$2,981 AUD
£1,649 GBP
View
Most Expensive
B
Brilliant Earth
20788319A · Oct 30
$4,086 AUD
$2,870 USD
View
9 more retailers have this diamond
Prices start from $929 AUDSave up to $3,156 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
1.51ct Radiant
$929 AUD