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Princess|Lab Grown|IGI

1.51ct D SI1 Princess Lab Grown Diamond

GD • D/SI1 • IGI LG510159147

Shape and cutting style on the report: Princess cut

Certificate IGI LG510159147

Diamond specifications and retailer prices

From $307 CAD
$220 USD
As of October 30, 2026
Save $1,439 CAD (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,746 CAD at Brilliant Earth · As of October 28, 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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG510159147 or 510159147. Listed at 19 retailers as of October 28, 2026, with prices from $307 to $1,746, a $1,439 spread on the same certified stone. Brilliant Earth lists it at $1,746. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG510159147
Dimensions6.29 × 6.09 × 4.42 mm
L/W Ratio1.03
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
6.29 mm6.09 mm1.51 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG510159147
Side View
Table 69.0%Crown 41.3°Girdle: Slightly ThickPavilion 38.3°Culet: NoneDepth 72.6%

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: $1,746 CAD|Low: $258 CAD|High: $1,900 CAD|Avg: $951 CAD|-8.1%
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
October 30, 2026
Retailer 4$307 CAD
Retailer 15$356 CAD
Retailer 7$362 CAD
Retailer 10$380 CAD
Retailer 11$380 CAD
Retailer 8$632 CAD
Retailer 9$651 CAD
Retailer 14$697 CAD
Retailer 2$707 CAD
Retailer 13$1,222 CAD
Retailer 5$1,291 CAD
Retailer 3$1,296 CAD
Retailer 6$1,439 CAD
Retailer 12$1,526 CAD
Brilliant Earth$1,746 CAD

41 data points across 15 retailers

19 retailers$307 CAD to $1,746 CAD

A
Cheapest Retailer
-
$307 CAD
$220 USD
Retailer 2
-
$323 CAD
$231 USD
View
Price last confirmed 38 days ago
A
Retailer 3
-
$356 CAD
$255 USD
View
B+
Retailer 4
-
$362 CAD
$259 USD
View
Final sale: no returns
Retailer 5
-
$374 CAD
$268 USD
View
Price last confirmed 36 days ago
A
Retailer 6
-
$380 CAD
$272 USD
View
B+
Retailer 7
-
$380 CAD
$272 USD
View
Retailer 8
-
$395 CAD
$283 USD
View
Price last confirmed 35 days ago
B+
Retailer 9
-
$632 CAD
€431 EUR
View
B+
Retailer 10
-
$651 CAD
$466 USD
View
B+
Retailer 11
-
$697 CAD
$499 USD
View
B+
Retailer 12
-
$707 CAD
£398 GBP
View
B
Retailer 13
-
$1,055 CAD
$755 USD
View
B
Retailer 14
-
$1,222 CAD
$875 USD
View
Retailer 15
-
$1,291 CAD
$924 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
$1,296 CAD
$928 USD
View
Retailer 17
-
$1,439 CAD
$1,030 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
$1,526 CAD
£860 GBP
View
Most Expensive
B
Brilliant Earth
14251613A · Oct 28
$1,746 CAD
$1,250 USD
View
18 more retailers have this diamond
Prices start from $307 CADSave up to $1,439 CAD

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
$307 CAD