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Radiant|Lab Grown|IGI

1.73ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG468168401

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

Certificate IGI LG468168401

Diamond specifications and retailer prices

From £140 GBP
$186 USD
As of October 27, 2026
Save £1,207 GBP (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,347 GBP at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

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 top-tier cut grade and certified by IGI LG468168401 or 468168401. Listed at 12 retailers as of October 27, 2026, with prices from £140 to £1,347, a £1,207 spread on the same certified stone. Do Amore Diamonds lists it at £1,347. 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 angle45.9°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG468168401
Dimensions7.57 × 6.08 × 4.17 mm
L/W Ratio1.25
Culet sizeNone
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.57 mm6.08 mm1.73 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG468168401
Side View
Table 67.5%Crown 45.9°Girdle: Slightly ThickPavilion 31.9°Culet: NoneDepth 68.6%

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 27
Current: £1,347 GBP|Low: £138 GBP|High: £1,415 GBP|Avg: £565 GBP|-4.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 29, 2026
Retailer 12£140 GBP
Retailer 3£161 GBP
Retailer 11£163 GBP
Retailer 2£247 GBP
Retailer 10£306 GBP
Retailer 4£375 GBP
Retailer 7£476 GBP
Retailer 5£539 GBP
Retailer 9£561 GBP
Retailer 14£609 GBP
Retailer 13£617 GBP
Retailer 6£878 GBP
Retailer 8£898 GBP
Retailer 15£1,046 GBP
Do Amore Diamonds£1,347 GBP

37 data points across 15 retailers

12 retailers£140 GBP to £1,347 GBP

A
Cheapest Retailer
-
£140 GBP
$186 USD
A
Retailer 2
-
£161 GBP
$214 USD
View
Final sale: no returns
A
Retailer 3
-
£163 GBP
$216 USD
View
A
Retailer 4
-
£247 GBP
View
B+
Retailer 5
-
£306 GBP
$406 USD
View
B
Retailer 6
-
£561 GBP
$745 USD
View
B+
Retailer 7
-
£609 GBP
$809 USD
View
B+
Retailer 8
-
£617 GBP
$820 USD
View
B
Retailer 9
-
£667 GBP
View
B
Retailer 10
-
£898 GBP
View
B
Retailer 11
-
£1,046 GBP
$1,390 USD
View
Most Expensive
B
Do Amore Diamonds
27-E5EA7792C · Oct 28
£1,347 GBP
$1,790 USD
View
11 more retailers have this diamond
Prices start from £140 GBPSave up to £1,207 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 Radiant
£140 GBP