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Radiant|Lab Grown|IGI

1.72ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG627408379

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

Certificate IGI LG627408379

Diamond specifications and retailer prices

From £137 GBP
$183 USD
As of October 27, 2026
Save £1,177 GBP (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,314 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG627408379 or 627408379. Listed at 10 retailers as of October 27, 2026, with prices from £137 to £1,314, a £1,177 spread on the same certified stone. Do Amore Diamonds lists it at £1,314. 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

1.72
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627408379
Dimensions8.67 × 5.83 × 3.93 mm
L/W Ratio1.49
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
8.67 mm5.83 mm1.72 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627408379
Side View
Table 66.0%Crown 44.4°Girdle: MediumPavilion 35.5°Culet: NoneDepth 67.4%

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: £1,314 GBP|Low: £109 GBP|High: £1,358 GBP|Avg: £607 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 29, 2026
Retailer 6£137 GBP
Retailer 3£158 GBP
Retailer 10£159 GBP
Retailer 5£298 GBP
Retailer 4£575 GBP
Retailer 8£596 GBP
Retailer 7£601 GBP
Retailer 2£879 GBP
Retailer 9£948 GBP
Do Amore Diamonds£1,314 GBP

23 data points across 10 retailers

10 retailers£137 GBP to £1,314 GBP

A
Cheapest Retailer
-
£137 GBP
$183 USD
A
Retailer 2
-
£158 GBP
$212 USD
View
A
Retailer 3
-
£159 GBP
$213 USD
View
Final sale: no returns
B+
Retailer 4
-
£298 GBP
$399 USD
View
B+
Retailer 5
-
£575 GBP
$771 USD
View
B+
Retailer 6
-
£596 GBP
$799 USD
View
B+
Retailer 7
-
£601 GBP
$805 USD
View
B
Retailer 8
-
£879 GBP
View
B
Retailer 9
-
£948 GBP
$1,270 USD
View
Most Expensive
B
Do Amore Diamonds
27-9FA26D7BD · Oct 29
£1,314 GBP
$1,760 USD
View
9 more retailers have this diamond
Prices start from £137 GBPSave up to £1,177 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
£137 GBP