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Princess|Lab Grown|IGI

1.51ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG631444203

Shape and cutting style on the report: Princess cut

Certificate IGI LG631444203

Diamond specifications and retailer prices

From $303 AUD
$213 USD
As of October 27, 2026
Save $1,457 AUD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,760 AUD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

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 top-tier cut grade and certified by IGI LG631444203 or 631444203. Listed at 14 retailers as of October 27, 2026, with prices from $303 to $1,760, a $1,457 spread on the same certified stone. Reve Diamonds lists it at $1,760. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle42.4°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631444203
Dimensions6.37 × 6.23 × 4.55 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.37 mm6.23 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG631444203
Side View
Table 71.0%Crown 42.4°Girdle: THN-MEDPavilion 39.7°Culet: NoneDepth 73.0%

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: $695 AUD|Low: $201 AUD|High: $1,528 AUD|Avg: $640 AUD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 10$201 AUD
Retailer 9$339 AUD
Retailer 7$353 AUD
Retailer 5$377 AUD
Retailer 6$648 AUD
Retailer 2$655 AUD
Retailer 1$695 AUD
Retailer 8$845 AUD
Retailer 4$1,216 AUD
Retailer 3$1,517 AUD

41 data points across 10 retailers

14 retailers$303 AUD to $1,760 AUD

A
Cheapest Retailer
-
$303 AUD
$213 USD
A
Retailer 2
-
$339 AUD
$238 USD
View
Final sale: no returns
A
Retailer 3
-
$353 AUD
$248 USD
View
A
Retailer 4
-
$377 AUD
$265 USD
View
A
Retailer 5
-
$377 AUD
$265 USD
View
B+
Retailer 6
-
$648 AUD
$455 USD
View
B+
Retailer 7
-
$655 AUD
$460 USD
View
B+
Retailer 8
-
$695 AUD
£384 GBP
View
B+
Retailer 9
-
$845 AUD
$594 USD
View
B
Retailer 10
-
$1,211 AUD
$851 USD
View
B
Retailer 11
-
$1,216 AUD
$854 USD
View
B
Retailer 12
-
$1,286 AUD
$904 USD
View
B
Retailer 13
-
$1,517 AUD
£839 GBP
View
Most Expensive
B
Reve Diamonds
062840DEF · Oct 28
$1,760 AUD
$1,236 USD
View
13 more retailers have this diamond
Prices start from $303 AUDSave up to $1,457 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
$303 AUD