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Princess|Lab Grown|IGI

1.73ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG553222677

Shape and cutting style on the report: Princess cut

Certificate IGI LG553222677

Diamond specifications and retailer prices

From £164 GBP
$219 USD
As of October 28, 2026
Save £1,420 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,584 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.73ct lab-grown princess diamond

This 1.73ct 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 LG553222677 or 553222677. Listed at 11 retailers as of October 28, 2026, with prices from £164 to £1,584, a £1,420 spread on the same certified stone. Do Amore Diamonds lists it at £1,584. 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

1.73
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.4°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG553222677
Dimensions6.60 × 6.52 × 4.50 mm
L/W Ratio1.01
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
6.60 mm6.52 mm1.73 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG553222677
Side View
Table 68.0%Crown 42.4°Girdle: MediumPavilion 37.7°Culet: NoneDepth 69.0%

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 28
Current: £1,584 GBP|Low: £161 GBP|High: £1,614 GBP|Avg: £617 GBP|-0.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 7£164 GBP
Retailer 3£188 GBP
Retailer 5£191 GBP
Retailer 4£290 GBP
Retailer 8£350 GBP
Retailer 6£659 GBP
Retailer 9£684 GBP
Retailer 10£725 GBP
Retailer 2£909 GBP
Retailer 11£1,021 GBP
Do Amore Diamonds£1,584 GBP

36 data points across 11 retailers

11 retailers£164 GBP to £1,584 GBP

A
Cheapest Retailer
-
£164 GBP
$219 USD
A
Retailer 2
-
£188 GBP
$251 USD
View
Final sale: no returns
A
Retailer 3
-
£191 GBP
$255 USD
View
A
Retailer 4
-
£290 GBP
View
B+
Retailer 5
-
£350 GBP
$466 USD
View
B
Retailer 6
-
£659 GBP
$878 USD
View
B+
Retailer 7
-
£684 GBP
$911 USD
View
B+
Retailer 8
-
£725 GBP
$965 USD
View
B
Retailer 9
-
£909 GBP
View
B
Retailer 10
-
£1,021 GBP
$1,360 USD
View
Most Expensive
B
Do Amore Diamonds
27-F7AA09D01 · Oct 29
£1,584 GBP
$2,110 USD
View
10 more retailers have this diamond
Prices start from £164 GBPSave up to £1,420 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
1.73ct Princess
£164 GBP