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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 $258 AUD
$181 USD
As of October 27, 2026
Save $1,280 AUD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,537 AUD 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 $258 to $1,537, a $1,280 spread on the same certified stone. Brilliant Earth lists it at $1,537. 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
E
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
Top View
6.29 mm6.21 mm1.51 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737515680
Side View
Table 70.0%Crown 39.3°Girdle: Slightly ThickPavilion 38.6°Culet: NoneDepth 71.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $1,537 AUD|Low: $164 AUD|High: $1,594 AUD|Avg: $774 AUD|-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$164 AUD
Retailer 11$258 AUD
Retailer 4$285 AUD
Retailer 6$550 AUD
Retailer 13$565 AUD
Retailer 2$573 AUD
Retailer 8$576 AUD
Retailer 10$791 AUD
Retailer 12$794 AUD
Retailer 3$1,043 AUD
Retailer 9$1,274 AUD
Retailer 7$1,499 AUD
Brilliant Earth$1,537 AUD

43 data points across 13 retailers

19 retailers$258 AUD to $1,537 AUD

A
Cheapest Retailer
-
$258 AUD
$181 USD
B+
Retailer 2
-
$285 AUD
$200 USD
View
Final sale: no returns
B+
Retailer 3
-
$299 AUD
$210 USD
View
B+
Retailer 4
-
$319 AUD
$224 USD
View
B+
Retailer 5
-
$319 AUD
$224 USD
View
B+
Retailer 6
-
$550 AUD
€368 EUR
View
B
Retailer 7
-
$565 AUD
$397 USD
View
B+
Retailer 8
-
$573 AUD
£317 GBP
View
B+
Retailer 9
-
$576 AUD
£319 GBP
View
B+
Retailer 10
-
$636 AUD
$447 USD
View
B
Retailer 11
-
$791 AUD
$556 USD
View
B
Retailer 12
-
$794 AUD
$558 USD
View
B
Retailer 13
-
$1,025 AUD
$720 USD
View
B
Retailer 14
-
$1,043 AUD
SGD 990 SGD
View
B
Retailer 15
-
$1,274 AUD
$895 USD
View
Retailer 16
-
$1,281 AUD
$900 USD
View
Price last confirmed 8 days ago
Retailer 17
-
$1,296 AUD
$911 USD
View
Price last confirmed 81 days ago
B
Retailer 18
-
$1,499 AUD
£829 GBP
View
Most Expensive
B
Brilliant Earth
18694536A · Oct 29
$1,537 AUD
$1,080 USD
View
18 more retailers have this diamond
Prices start from $258 AUDSave up to $1,280 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
$258 AUD