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Cushion|Lab Grown|IGI

1.72ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG555272235

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG555272235

Diamond specifications and retailer prices

From £623 GBP
$835 USD
As of October 27, 2026
Save £772 GBP (55%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,396 GBP at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

About this 1.72ct lab-grown cushion diamond

This 1.72ct lab-grown cushion 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 LG555272235 or 555272235. Listed at 5 retailers as of October 27, 2026, with prices from £623 to £1,396, a £772 spread on the same certified stone. Do Amore Diamonds lists it at £1,396. 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 angle34.3°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG555272235
Dimensions7.95 × 6.60 × 4.36 mm
L/W Ratio1.20
Girdle conditionFaceted
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
7.95 mm6.60 mm1.72 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG555272235
Side View
Table 60.0%Crown 34.3°Girdle: THN-STKPavilion 39.4°Culet: NoneDepth 66.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: £1,396 GBP|Low: £116 GBP|High: £1,515 GBP|Avg: £728 GBP|-7.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 25, 2026
Retailer 6£172 GBP
Retailer 3£315 GBP
Retailer 4£623 GBP
Retailer 2£798 GBP
Retailer 5£911 GBP
Do Amore Diamonds£1,396 GBP

17 data points across 6 retailers

5 retailers£623 GBP to £1,396 GBP

Retailer 1
-
£315 GBP
$422 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
£623 GBP
$835 USD
View
B+
Retailer 3
-
£798 GBP
View
B
Retailer 4
-
£911 GBP
$1,220 USD
View
Most Expensive
B
Do Amore Diamonds
27-B382248DA · Oct 27
£1,396 GBP
$1,870 USD
View
4 more retailers have this diamond
Prices start from £623 GBPSave up to £772 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.

B+
1.72ct Cushion
£623 GBP