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1.73ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG847655692

Shape and cutting style on the report: Round brilliant

Certificate IGI LG847655692

Diamond specifications and retailer prices

From £352 GBP
€447 EUR
As of October 27, 2026
Save £484 GBP (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £836 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1.73ct lab-grown round diamond

This 1.73ct lab-grown round 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 LG847655692 or 847655692. Listed at 7 retailers as of October 25, 2026, with prices from £352 to £836, a £484 spread on the same certified stone. MOH London lists it at £836. 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 angle33.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847655692
Dimensions7.80 × 7.75 × 4.70 mm
L/W Ratio1.01
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.80 mm7.75 mm1.73 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847655692
Side View
Table 56.0%Crown 33.3°Girdle: MediumPavilion 40.4°Culet: NoneDepth 60.4%

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: £836 GBP|Low: £349 GBP|High: £840 GBP|Avg: £500 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 28, 2026
Retailer 3£352 GBP
Retailer 6£355 GBP
Retailer 4£368 GBP
Retailer 2£414 GBP
Retailer 5£462 GBP
Retailer 7£631 GBP
MOH London£836 GBP

8 data points across 7 retailers

7 retailers£352 GBP to £836 GBP

A
Cheapest Retailer
-
£352 GBP
€447 EUR
B+
Retailer 2
-
£355 GBP
$473 USD
View
A
Retailer 3
-
£368 GBP
View
A
Retailer 4
-
£414 GBP
$551 USD
View
B+
Retailer 5
-
£462 GBP
$615 USD
View
Retailer 6
-
£631 GBP
$840 USD
View
Price last confirmed 8 days ago
Most Expensive
B
MOH London
LG847655692 · Oct 25
£836 GBP
View
6 more retailers have this diamond
Prices start from £352 GBPSave up to £484 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 Round
£352 GBP