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Radiant|Lab Grown|IGI

1.72ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG547255810

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

Certificate IGI LG547255810

Diamond specifications and retailer prices

From £139 GBP
$185 USD
As of October 27, 2026
Save £1,198 GBP (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,337 GBP at Do Amore Diamonds · As of October 28, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG547255810 or 547255810. Listed at 10 retailers as of October 27, 2026, with prices from £139 to £1,337, a £1,198 spread on the same certified stone. Do Amore Diamonds lists it at £1,337. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.7°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG547255810
Dimensions8.29 × 5.90 × 4.05 mm
L/W Ratio1.41
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
8.29 mm5.90 mm1.72 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG547255810
Side View
Table 63.5%Crown 43.7°Girdle: MED-STKPavilion 35.7°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: £1,337 GBP|Low: £137 GBP|High: £1,404 GBP|Avg: £575 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
October 18, 2026
Retailer 9£139 GBP
Retailer 13£160 GBP
Retailer 8£161 GBP
Retailer 7£303 GBP
Retailer 5£331 GBP
Retailer 4£413 GBP
Retailer 3£436 GBP
Retailer 6£586 GBP
Retailer 11£605 GBP
Retailer 10£613 GBP
Retailer 2£896 GBP
Retailer 12£1,029 GBP
Do Amore Diamonds£1,337 GBP

17 data points across 13 retailers

10 retailers£139 GBP to £1,337 GBP

A
Cheapest Retailer
-
£139 GBP
$185 USD
A
Retailer 2
-
£160 GBP
$213 USD
View
Final sale: no returns
A
Retailer 3
-
£161 GBP
$215 USD
View
B+
Retailer 4
-
£303 GBP
$404 USD
View
B+
Retailer 5
-
£586 GBP
$780 USD
View
B+
Retailer 6
-
£605 GBP
$806 USD
View
B+
Retailer 7
-
£613 GBP
$816 USD
View
B
Retailer 8
-
£896 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£1,029 GBP
$1,370 USD
View
Most Expensive
B
Do Amore Diamonds
27-2FE244DD5 · Oct 28
£1,337 GBP
$1,780 USD
View
9 more retailers have this diamond
Prices start from £139 GBPSave up to £1,198 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
£139 GBP