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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 $281 SGD
$220 USD
As of October 30, 2026
Save $1,151 SGD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,432 SGD at Brilliant Earth · As of October 31, 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 30, 2026, with prices from $281 to $1,432, a $1,151 spread on the same certified stone. Brilliant Earth lists it at $1,432. 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
Colour
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: $1,432 SGD|Low: $281 SGD|High: $1,649 SGD|Avg: $872 SGD|-13.2%
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 31, 2026
Retailer 5$281 SGD
Retailer 3$326 SGD
Retailer 7$331 SGD
Retailer 11$348 SGD
Retailer 12$348 SGD
Retailer 9$579 SGD
Retailer 10$596 SGD
Retailer 15$638 SGD
Retailer 2$641 SGD
Retailer 8$904 SGD
Retailer 14$1,119 SGD
Retailer 4$1,186 SGD
Retailer 6$1,317 SGD
Retailer 13$1,396 SGD
Brilliant Earth$1,432 SGD

40 data points across 15 retailers

19 retailers$281 SGD to $1,432 SGD

A
Cheapest Retailer
-
$281 SGD
$220 USD
Retailer 2
-
$295 SGD
$231 USD
View
Price last confirmed 39 days ago
A
Retailer 3
-
$326 SGD
$255 USD
View
B+
Retailer 4
-
$331 SGD
$259 USD
View
Final sale: no returns
Retailer 5
-
$343 SGD
$268 USD
View
Price last confirmed 38 days ago
B+
Retailer 6
-
$348 SGD
$272 USD
View
B+
Retailer 7
-
$348 SGD
$272 USD
View
Retailer 8
-
$362 SGD
$283 USD
View
Price last confirmed 36 days ago
B+
Retailer 9
-
$579 SGD
€431 EUR
View
B+
Retailer 10
-
$596 SGD
$466 USD
View
B+
Retailer 11
-
$638 SGD
$499 USD
View
B+
Retailer 12
-
$641 SGD
£395 GBP
View
B
Retailer 13
-
$904 SGD
$707 USD
View
B
Retailer 14
-
$1,119 SGD
$875 USD
View
Retailer 15
-
$1,181 SGD
$924 USD
View
Price last confirmed 12 days ago
B
Retailer 16
-
$1,186 SGD
$928 USD
View
Retailer 17
-
$1,317 SGD
$1,030 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
$1,396 SGD
£860 GBP
View
Most Expensive
B
Brilliant Earth
14251613A · Oct 31
$1,432 SGD
$1,120 USD
View
18 more retailers have this diamond
Prices start from $281 SGDSave up to $1,151 SGD

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
$281 SGD