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Radiant|Lab Grown|IGI

1.72ct F IF Radiant Lab Grown Diamond

GD • F/IF • IGI LG729503380

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

Certificate IGI LG729503380

Diamond specifications and retailer prices

From £220 GBP
As of October 30, 2026
Save £1,801 GBP (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,021 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.72ct lab-grown radiant diamond

This 1.72ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG729503380 or 729503380. Listed at 22 retailers as of October 30, 2026, with prices from £220 to £2,021, a £1,801 spread on the same certified stone. Brilliant Earth lists it at £2,021. 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

1.72
Carat
F
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.2°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729503380
Dimensions8.52 × 5.81 × 3.93 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.52 mm5.81 mm1.72 ctF / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729503380
Side View
Table 65.0%Crown 41.2°Girdle: MediumPavilion 37.2°Culet: NoneDepth 67.6%

Caratlytics Score

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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 30
Current: £2,021 GBP|Low: £211 GBP|High: £2,883 GBP|Avg: £733 GBP|-29.9%
Brilliant Earth
Retailer 2
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Retailer 21
October 31, 2026
Retailer 4£220 GBP
Retailer 14£247 GBP
Retailer 12£256 GBP
Retailer 5£273 GBP
Retailer 10£273 GBP
Retailer 18£390 GBP
Retailer 2£437 GBP
Retailer 7£447 GBP
Retailer 17£469 GBP
Retailer 9£472 GBP
Retailer 13£484 GBP
Retailer 16£635 GBP
Retailer 20£703 GBP
Retailer 6£877 GBP
Retailer 11£913 GBP
Retailer 8£941 GBP
Retailer 21£974 GBP
Retailer 15£1,100 GBP
Retailer 3£1,163 GBP
Retailer 19£1,928 GBP
Brilliant Earth£2,021 GBP

36 data points across 21 retailers

22 retailers£220 GBP to £2,021 GBP

A
Cheapest Retailer
-
£220 GBP
Retailer 2
-
£256 GBP
View
Price last confirmed 8 days ago
Retailer 3
-
£273 GBP
View
Price last confirmed 11 days ago
A
Retailer 4
-
£273 GBP
View
A
Retailer 5
-
£390 GBP
View
A
Retailer 6
-
£437 GBP
View
B+
Retailer 7
-
£447 GBP
View
Retailer 8
-
£469 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£472 GBP
View
A
Retailer 10
-
£484 GBP
View
Retailer 11
-
£635 GBP
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£703 GBP
View
Retailer 13
-
£877 GBP
View
Price last confirmed 8 days ago
B
Retailer 14
-
£890 GBP
View
B
Retailer 15
-
£913 GBP
View
B+
Retailer 16
-
£941 GBP
View
B+
Retailer 17
-
£958 GBP
View
B+
Retailer 18
-
£974 GBP
View
Retailer 19
-
£1,100 GBP
View
Price last confirmed 7 days ago
B
Retailer 20
-
£1,163 GBP
View
Retailer 21
-
£1,928 GBP
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliant Earth
21417112A · Oct 31
£2,021 GBP
$2,720 USD
View
21 more retailers have this diamond
Prices start from £220 GBPSave up to £1,801 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
1.72ct Radiant
£220 GBP