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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 £125 GBP
$166 USD
As of October 27, 2026
Save £689 GBP (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £814 GBP 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 £125 to £814, a £689 spread on the same certified stone. Reve Diamonds lists it at £814. 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
Colour
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

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £272 GBP|Low: £98 GBP|High: £814 GBP|Avg: £392 GBP|+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£125 GBP
Retailer 2£139 GBP
Retailer 6£209 GBP
Retailer 4£266 GBP
Retailer 1£272 GBP
Retailer 5£278 GBP
Retailer 11£352 GBP
Retailer 10£354 GBP
Retailer 8£523 GBP
Retailer 3£537 GBP
Retailer 7£721 GBP
Reve Diamonds£814 GBP

41 data points across 12 retailers

18 retailers£125 GBP to £814 GBP

A
Cheapest Retailer
-
£125 GBP
$166 USD
A
Retailer 2
-
£125 GBP
$166 USD
View
Price last confirmed 37 days ago
A
Retailer 3
-
£139 GBP
$185 USD
View
Final sale: no returns
A
Retailer 4
-
£144 GBP
$192 USD
View
Price last confirmed 35 days ago
A
Retailer 5
-
£144 GBP
$192 USD
View
A
Retailer 6
-
£152 GBP
$203 USD
View
Price last confirmed 34 days ago
A
Retailer 7
-
£154 GBP
$205 USD
View
A
Retailer 8
-
£154 GBP
$205 USD
View
B+
Retailer 9
-
£209 GBP
$278 USD
View
A
Retailer 10
-
£266 GBP
€337 EUR
View
A
Retailer 11
-
£272 GBP
View
A
Retailer 12
-
£278 GBP
View
B+
Retailer 13
-
£352 GBP
$469 USD
View
B+
Retailer 14
-
£354 GBP
$472 USD
View
B+
Retailer 15
-
£523 GBP
$697 USD
View
B+
Retailer 16
-
£537 GBP
$715 USD
View
B
Retailer 17
-
£721 GBP
View
Most Expensive
B
Reve Diamonds
D71178277 · Oct 28
£814 GBP
$1,084 USD
View
17 more retailers have this diamond
Prices start from £125 GBPSave up to £689 GBP

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
£125 GBP