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Princess|Lab Grown|IGI

1.56ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG687538154

Shape and cutting style on the report: Princess cut

Certificate IGI LG687538154

Diamond specifications and retailer prices

From £182 GBP
$242 USD
As of October 27, 2026
Save £815 GBP (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £997 GBP at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.56ct lab-grown princess diamond

This 1.56ct 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 LG687538154 or 687538154. Listed at 18 retailers as of October 27, 2026, with prices from £182 to £997, a £815 spread on the same certified stone. Reve Diamonds lists it at £997. 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

1.56
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.3°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687538154
Dimensions6.31 × 6.24 × 4.52 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
6.31 mm6.24 mm1.56 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687538154
Side View
Table 70.0%Crown 45.3°Girdle: MediumPavilion 38.5°Culet: NoneDepth 72.4%

Caratlytics Score

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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: £426 GBP|Low: £143 GBP|High: £997 GBP|Avg: £504 GBP|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Reve Diamonds
October 29, 2026
Retailer 4£182 GBP
Retailer 9£203 GBP
Retailer 12£211 GBP
Retailer 6£225 GBP
Retailer 16£225 GBP
Retailer 8£371 GBP
Retailer 2£380 GBP
Retailer 14£415 GBP
Retailer 10£423 GBP
Retailer 1£426 GBP
Retailer 15£592 GBP
Retailer 13£691 GBP
Retailer 3£725 GBP
Retailer 5£764 GBP
Retailer 7£834 GBP
Retailer 11£908 GBP
Reve Diamonds£997 GBP

43 data points across 17 retailers

18 retailers£182 GBP to £997 GBP

A
Cheapest Retailer
-
£182 GBP
$242 USD
A
Retailer 2
-
£203 GBP
$270 USD
View
Final sale: no returns
A
Retailer 3
-
£211 GBP
$281 USD
View
A
Retailer 4
-
£221 GBP
$294 USD
View
Price last confirmed 37 days ago
A
Retailer 5
-
£225 GBP
$300 USD
View
A
Retailer 6
-
£225 GBP
$300 USD
View
B+
Retailer 7
-
£371 GBP
$494 USD
View
B+
Retailer 8
-
£380 GBP
$506 USD
View
B+
Retailer 9
-
£415 GBP
$553 USD
View
B+
Retailer 10
-
£423 GBP
€537 EUR
View
B+
Retailer 11
-
£426 GBP
View
B
Retailer 12
-
£592 GBP
$788 USD
View
B
Retailer 13
-
£691 GBP
$920 USD
View
B
Retailer 14
-
£725 GBP
$965 USD
View
B
Retailer 15
-
£764 GBP
$1,017 USD
View
B
Retailer 16
-
£834 GBP
$1,110 USD
View
B
Retailer 17
-
£908 GBP
View
Most Expensive
B
Reve Diamonds
51455529F · Oct 28
£997 GBP
$1,328 USD
View
17 more retailers have this diamond
Prices start from £182 GBPSave up to £815 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
1.56ct Princess
£182 GBP