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Princess|Lab Grown|IGI

1.23ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG600343176

Shape and cutting style on the report: Princess cut

Certificate IGI LG600343176

Diamond specifications and retailer prices

From £125 GBP
$168 USD
As of October 30, 2026
Save £1,084 GBP (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,209 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.23ct lab-grown princess diamond

This 1.23ct lab-grown princess sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG600343176 or 600343176. Listed at 9 retailers as of October 30, 2026, with prices from £125 to £1,209, a £1,084 spread on the same certified stone. Do Amore Diamonds lists it at £1,209. 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

1.23
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600343176
Dimensions5.81 × 5.79 × 4.21 mm
L/W Ratio1.00
Culet sizeNone
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
5.81 mm5.79 mm1.23 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600343176
Side View
Table 70.0%Crown 44.1°Girdle: MediumPavilion 38.7°Culet: NoneDepth 72.7%

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 30
Current: £1,209 GBP|Low: £125 GBP|High: £1,209 GBP|Avg: £661 GBP|+2.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 5£125 GBP
Retailer 6£280 GBP
Retailer 4£529 GBP
Retailer 2£560 GBP
Retailer 7£563 GBP
Retailer 3£809 GBP
Do Amore Diamonds£1,209 GBP

16 data points across 7 retailers

9 retailers£125 GBP to £1,209 GBP

A
Cheapest Retailer
-
£125 GBP
$168 USD
A
Retailer 2
-
£146 GBP
$195 USD
View
B+
Retailer 3
-
£280 GBP
$375 USD
View
B
Retailer 4
-
£529 GBP
$709 USD
View
B
Retailer 5
-
£553 GBP
$741 USD
View
B
Retailer 6
-
£560 GBP
$750 USD
View
B
Retailer 7
-
£563 GBP
$754 USD
View
B
Retailer 8
-
£809 GBP
View
Most Expensive
B
Do Amore Diamonds
27-A4A512184 · Oct 31
£1,209 GBP
$1,620 USD
View
8 more retailers have this diamond
Prices start from £125 GBPSave up to £1,084 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
1.23ct Princess
£125 GBP