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Round|Lab Grown|IGI

1.73ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG652478204

Shape and cutting style on the report: Round brilliant

Certificate IGI LG652478204

Diamond specifications and retailer prices

From £330 GBP
$439 USD
As of October 28, 2026
Save £569 GBP (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £898 GBP at MOH London · As of October 29, 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 LG652478204 or 652478204. Listed at 15 retailers as of October 28, 2026, with prices from £330 to £898, a £569 spread on the same certified stone. MOH London lists it at £898. 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 angle34.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG652478204
Dimensions7.71 × 7.66 × 4.75 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.71 mm7.66 mm1.73 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG652478204
Side View
Table 58.0%Crown 34.7°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.9%

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: £898 GBP|Low: £191 GBP|High: £905 GBP|Avg: £494 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8£191 GBP
Retailer 9£330 GBP
Retailer 7£332 GBP
Retailer 4£341 GBP
Retailer 2£351 GBP
Retailer 3£399 GBP
Retailer 11£446 GBP
Retailer 5£617 GBP
Retailer 6£627 GBP
Retailer 10£834 GBP
MOH London£898 GBP

37 data points across 11 retailers

15 retailers£330 GBP to £898 GBP

Retailer 1
-
£154 GBP
$205 USD
Price last confirmed 33 days ago
Retailer 2
-
£179 GBP
$238 USD
View
Price last confirmed 37 days ago
Retailer 3
-
£188 GBP
$251 USD
View
Price last confirmed 31 days ago
Retailer 4
-
£191 GBP
$255 USD
View
Price last confirmed 17 days ago
B+
Retailer 5
-
£330 GBP
$439 USD
View
Retailer 6
-
£332 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
£341 GBP
€432 EUR
View
A
Retailer 8
-
£351 GBP
View
A
Retailer 9
-
£399 GBP
$531 USD
View
B+
Retailer 10
-
£446 GBP
$594 USD
View
Retailer 11
-
£615 GBP
$819 USD
View
Price last confirmed 32 days ago
B
Retailer 12
-
£617 GBP
$822 USD
View
Retailer 13
-
£627 GBP
$835 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
£834 GBP
$1,110 USD
View
Most Expensive
B
MOH London
LG652478204 · Oct 29
£898 GBP
View
14 more retailers have this diamond
Prices start from £330 GBPSave up to £569 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
£330 GBP