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Princess|Lab Grown|IGI

1.57ct E SI1 Princess Lab Grown Diamond

EX • E/SI1 • IGI LG602312535

Shape and cutting style on the report: Princess cut

Certificate IGI LG602312535

Diamond specifications and retailer prices

From $166 USD
As of October 27, 2026
Save $918 USD (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,084 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.57ct lab-grown princess diamond

This 1.57ct 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 LG602312535 or 602312535. Listed at 18 retailers as of October 27, 2026, with prices from $166 to $1,084, a $918 spread on the same certified stone. Reve Diamonds lists it at $1,084. 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

1.57
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602312535
Dimensions6.23 × 6.17 × 4.53 mm
L/W Ratio1.01
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
6.23 mm6.17 mm1.57 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602312535
Side View
Table 74.0%Crown 49°Girdle: MediumPavilion 38.6°Culet: NoneDepth 73.4%

Caratlytics Score

How it works →
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 27
Current: $363 USD|Low: $131 USD|High: $1,084 USD|Avg: $521 USD|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Reve Diamonds
October 29, 2026
Retailer 9$166 USD
Retailer 2$185 USD
Retailer 6$278 USD
Retailer 4$354 USD
Retailer 1$363 USD
Retailer 5$371 USD
Retailer 11$469 USD
Retailer 10$472 USD
Retailer 8$697 USD
Retailer 3$715 USD
Retailer 7$960 USD
Reve Diamonds$1,084 USD

41 data points across 12 retailers

18 retailers$166 USD to $1,084 USD

A
Cheapest Retailer
-
$166 USD
Retailer 2
-
$166 USD
View
Price last confirmed 37 days ago
A
Retailer 3
-
$185 USD
View
Final sale: no returns
Retailer 4
-
$192 USD
View
Price last confirmed 36 days ago
A
Retailer 5
-
$192 USD
View
Retailer 6
-
$203 USD
View
Price last confirmed 34 days ago
A
Retailer 7
-
$205 USD
View
A
Retailer 8
-
$205 USD
View
B+
Retailer 9
-
$278 USD
View
A
Retailer 10
-
$354 USD
€337 EUR
View
A
Retailer 11
-
$363 USD
£286 GBP
View
A
Retailer 12
-
$371 USD
£292 GBP
View
B+
Retailer 13
-
$469 USD
View
B+
Retailer 14
-
$472 USD
View
B+
Retailer 15
-
$697 USD
View
B+
Retailer 16
-
$715 USD
View
B
Retailer 17
-
$960 USD
£756 GBP
View
Most Expensive
B
Reve Diamonds
D71178277 · Oct 28
$1,084 USD
View
17 more retailers have this diamond
Prices start from $166 USDSave up to $918 USD

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
1.57ct Princess
$166 USD