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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 $621 USD
As of October 30, 2026
Save $2,439 USD (80%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,060 USD 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 $621 to $3,060, a $2,439 spread on the same certified stone. Brilliant Earth lists it at $3,060. 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
Color
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: $3,060 USD|Low: $694 USD|High: $3,190 USD|Avg: $1,591 USD|-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
October 30, 2026
Retailer 15$694 USD
Retailer 6$695 USD
Retailer 16$770 USD
Retailer 12$895 USD
Retailer 5$977 USD
Retailer 8$1,032 USD
Retailer 2$1,206 USD
Retailer 9$1,289 USD
Retailer 11$1,323 USD
Retailer 14$1,673 USD
Retailer 13$2,075 USD
Retailer 7$2,240 USD
Retailer 4$2,431 USD
Retailer 3$2,456 USD
Retailer 10$3,049 USD
Brilliant Earth$3,060 USD

42 data points across 16 retailers

25 retailers$621 USD to $3,060 USD

A
Cheapest Retailer
-
$621 USD
A
Retailer 2
-
$694 USD
View
Final sale: no returns
A
Retailer 3
-
$695 USD
View
A
Retailer 4
-
$770 USD
View
Retailer 5
-
$770 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$845 USD
HK$6,600 HKD
View
A
Retailer 7
-
$895 USD
View
A
Retailer 8
-
$977 USD
View
A
Retailer 9
-
$1,032 USD
View
A
Retailer 10
-
$1,127 USD
View
A
Retailer 11
-
$1,206 USD
£949 GBP
View
A
Retailer 12
-
$1,289 USD
€1,228 EUR
View
A
Retailer 13
-
$1,323 USD
ZAR 21,366 ZAR
View
B+
Retailer 14
-
$1,673 USD
View
B+
Retailer 15
-
$2,024 USD
View
Retailer 16
-
$2,075 USD
View
Price last confirmed 12 days ago
B+
Retailer 17
-
$2,240 USD
£1,764 GBP
View
B+
Retailer 18
-
$2,431 USD
SGD 3,285 SGD
View
B+
Retailer 19
-
$2,456 USD
View
B+
Retailer 20
-
$2,486 USD
View
B+
Retailer 21
-
$2,536 USD
View
B+
Retailer 22
-
$2,551 USD
View
B
Retailer 23
-
$2,781 USD
£2,190 GBP
View
B
Retailer 24
-
$3,049 USD
£2,401 GBP
View
Most Expensive
B
Brilliant Earth
15503724A · Oct 30
$3,060 USD
View
24 more retailers have this diamond
Prices start from $621 USDSave up to $2,439 USD

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
$621 USD