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Radiant|Lab Grown|IGI

1.73ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG542232747

Shape and cutting style on the report: Radiant cut

Certificate IGI LG542232747

Diamond specifications and retailer prices

From £137 GBP
$184 USD
As of October 27, 2026
Save £1,184 GBP (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,321 GBP at Do Amore Diamonds · As of October 29, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG542232747 or 542232747. Listed at 10 retailers as of October 27, 2026, with prices from £137 to £1,321, a £1,184 spread on the same certified stone. Do Amore Diamonds lists it at £1,321. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG542232747
Dimensions8.25 × 5.78 × 4.10 mm
L/W Ratio1.43
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
8.25 mm5.78 mm1.73 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG542232747
Side View
Table 63.0%Crown 42.7°Girdle: Slightly ThickPavilion 33.1°Culet: NoneDepth 70.9%

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 27
Current: £1,321 GBP|Low: £137 GBP|High: £1,366 GBP|Avg: £608 GBP|-3.3%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 25, 2026
Retailer 5£137 GBP
Retailer 3£159 GBP
Retailer 10£160 GBP
Retailer 7£300 GBP
Retailer 4£578 GBP
Retailer 8£598 GBP
Retailer 6£604 GBP
Retailer 2£880 GBP
Retailer 9£948 GBP
Do Amore Diamonds£1,321 GBP

18 data points across 10 retailers

10 retailers£137 GBP to £1,321 GBP

A
Cheapest Retailer
-
£137 GBP
$184 USD
A
Retailer 2
-
£159 GBP
$213 USD
View
A
Retailer 3
-
£160 GBP
$214 USD
View
Final sale: no returns
B+
Retailer 4
-
£300 GBP
$402 USD
View
B+
Retailer 5
-
£578 GBP
$774 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£598 GBP
$802 USD
View
B+
Retailer 7
-
£604 GBP
$809 USD
View
B
Retailer 8
-
£880 GBP
View
B
Retailer 9
-
£948 GBP
$1,270 USD
View
Most Expensive
B
Do Amore Diamonds
27-E5D6A24DB · Oct 29
£1,321 GBP
$1,770 USD
View
9 more retailers have this diamond
Prices start from £137 GBPSave up to £1,184 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
£137 GBP