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Princess|Lab Grown|IGI

1.51ct E IF Princess Lab Grown Diamond

EX • E/IF • IGI LG720540148

Shape and cutting style on the report: Princess cut

Certificate IGI LG720540148

Diamond specifications and retailer prices

From $884 AUD
$621 USD
As of October 30, 2026
Save $3,472 AUD (80%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,356 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown princess diamond

This 1.51ct lab-grown princess sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG720540148 or 720540148. Listed at 25 retailers as of October 30, 2026, with prices from $884 to $4,356, a $3,472 spread on the same certified stone. Brilliant Earth lists it at $4,356. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.6°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720540148
Dimensions6.22 × 6.16 × 4.46 mm
L/W Ratio1.01
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
6.22 mm6.16 mm1.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG720540148
Side View
Table 71.0%Crown 47.6°Girdle: Slightly ThickPavilion 37.6°Culet: NoneDepth 72.4%

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: $4,356 AUD|Low: $848 AUD|High: $4,541 AUD|Avg: $2,265 AUD|-4.1%
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
October 31, 2026
Retailer 16$884 AUD
Retailer 17$988 AUD
Retailer 8$989 AUD
Retailer 3$1,096 AUD
Retailer 13$1,274 AUD
Retailer 7$1,391 AUD
Retailer 2$1,716 AUD
Retailer 10$1,836 AUD
Retailer 12$1,883 AUD
Retailer 15$2,382 AUD
Retailer 5$2,881 AUD
Retailer 14$2,954 AUD
Retailer 9$3,189 AUD
Retailer 6$3,461 AUD
Retailer 4$3,496 AUD
Retailer 11$4,341 AUD
Brilliant Earth$4,356 AUD

43 data points across 17 retailers

25 retailers$884 AUD to $4,356 AUD

A
Cheapest Retailer
-
$884 AUD
$621 USD
A
Retailer 2
-
$988 AUD
$694 USD
View
Final sale: no returns
A
Retailer 3
-
$989 AUD
$695 USD
View
A
Retailer 4
-
$1,096 AUD
$770 USD
View
Retailer 5
-
$1,096 AUD
$770 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$1,203 AUD
HK$6,600 HKD
View
A
Retailer 7
-
$1,274 AUD
$895 USD
View
A
Retailer 8
-
$1,391 AUD
$977 USD
View
A
Retailer 9
-
$1,469 AUD
$1,032 USD
View
A
Retailer 10
-
$1,604 AUD
$1,127 USD
View
A
Retailer 11
-
$1,716 AUD
£949 GBP
View
A
Retailer 12
-
$1,836 AUD
€1,228 EUR
View
A
Retailer 13
-
$1,883 AUD
ZAR 21,366 ZAR
View
B+
Retailer 14
-
$2,382 AUD
$1,673 USD
View
B+
Retailer 15
-
$2,881 AUD
$2,024 USD
View
Retailer 16
-
$2,954 AUD
$2,075 USD
View
Price last confirmed 13 days ago
B+
Retailer 17
-
$3,189 AUD
£1,764 GBP
View
B+
Retailer 18
-
$3,461 AUD
SGD 3,285 SGD
View
B+
Retailer 19
-
$3,496 AUD
$2,456 USD
View
B+
Retailer 20
-
$3,539 AUD
$2,486 USD
View
B+
Retailer 21
-
$3,610 AUD
$2,536 USD
View
B+
Retailer 22
-
$3,632 AUD
$2,551 USD
View
B
Retailer 23
-
$3,959 AUD
£2,190 GBP
View
B
Retailer 24
-
$4,341 AUD
£2,401 GBP
View
Most Expensive
B
Brilliant Earth
15503724A · Oct 30
$4,356 AUD
$3,060 USD
View
24 more retailers have this diamond
Prices start from $884 AUDSave up to $3,472 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 Princess
$884 AUD