Princess|Lab Grown|IGI

1.51ct E SI1 Princess Lab Grown Diamond

GD • E/SI1 • IGI LG737515680

Shape and cutting style on the report: Princess cut

Certificate IGI LG737515680

Diamond specifications and retailer prices

From $321 NZD

$181 USD

As of October 27, 2026

Save $1,595 NZD (83%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: $1,916 NZD at Brilliant Earth · As of October 29, 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 SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG737515680 or 737515680. Listed at 19 retailers as of October 27, 2026, with prices from $321 to $1,916, a $1,595 spread on the same certified stone. Brilliant Earth lists it at $1,916. 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

Colour

SI1

Clarity

Good

Cut

Specifications

CutGood

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle39.3°

Pavilion angle38.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG737515680

Dimensions6.29 × 6.21 × 4.44 mm

L/W Ratio1.01

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutGood

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG737515680

Side View

Caratlytics Score

How it works →

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 27

Current: $1,916 NZD|Low: $204 NZD|High: $1,987 NZD|Avg: $965 NZD|-3.6%

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

October 29, 2026

Retailer 5$204 NZD

Retailer 11$321 NZD

Retailer 4$355 NZD

Retailer 6$686 NZD

Retailer 13$704 NZD

Retailer 2$715 NZD

Retailer 8$718 NZD

Retailer 10$987 NZD

Retailer 12$990 NZD

Retailer 3$1,300 NZD

Retailer 9$1,588 NZD

Retailer 7$1,868 NZD

Brilliant Earth$1,916 NZD

43 data points across 13 retailers

19 retailers$321 NZD to $1,916 NZD

Cheapest Retailer

$321 NZD

$181 USD

B+

Retailer 2

$355 NZD

$200 USD

View

Final sale: no returns

B+

Retailer 3

$373 NZD

$210 USD

View

B+

Retailer 4

$397 NZD

$224 USD

View

B+

Retailer 5

$397 NZD

$224 USD

View

B+

Retailer 6

$686 NZD

€368 EUR

View

Retailer 7

$704 NZD

$397 USD

View

B+

Retailer 8

$715 NZD

£317 GBP

View

B+

Retailer 9

$718 NZD

£319 GBP

View

B+

Retailer 10

$793 NZD

$447 USD

View

Retailer 11

$987 NZD

$556 USD

View

Retailer 12

$990 NZD

$558 USD

View

Retailer 13

$1,277 NZD

$720 USD

View

Retailer 14

$1,300 NZD

SGD 990 SGD

View

Retailer 15

$1,588 NZD

$895 USD

View

Retailer 16

$1,597 NZD

$900 USD

View

Price last confirmed 9 days ago

Retailer 17

$1,616 NZD

$911 USD

View

Price last confirmed 81 days ago

Retailer 18

$1,868 NZD

£829 GBP

View

Most Expensive

Brilliant Earth

18694536A · Oct 29

$1,916 NZD

$1,080 USD

View

18 more retailers have this diamond

Prices start from $321 NZDSave up to $1,595 NZD

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.

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1.51ct Princess

$321 NZD