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Radiant|Lab Grown|IGI

1.73ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • IGI LG681556100

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG681556100

Diamond specifications and retailer prices

From £428 GBP
$570 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £428 GBP at B2C Jewels
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at B2C Jewels

About this 1.73ct lab-grown radiant diamond

This 1.73ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG681556100 or 681556100. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.73
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681556100
Dimensions8.64 × 5.74 mm
L/W Ratio1.51
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.64 mm5.74 mm1.73 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681556100
Side View
Table 61.0%Crown 39.9°Girdle: Slightly ThickPavilion 35.5°Culet: NoneDepth 70.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £428 GBP|Low: £418 GBP|High: £633 GBP|Avg: £491 GBP|-32.4%
September 23, 2026
B2C Jewels£428 GBP

4 data points across 1 retailer

1 retailer

B
B2C Jewels
27360745 · Oct 29
£428 GBP
$570 USD
View

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B
1.73ct Radiant
£428 GBP