CaratHunter
Plans
Cushion|Lab Grown|IGI

1.72ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG425067665

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG425067665

Diamond specifications and retailer prices

From £716 GBP
$960 USD
As of October 31, 2026
Save £2,947 GBP (80%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,663 GBP at MOH London · As of November 1, 2026
View at MOH London

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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425067665 or 425067665. Listed at 6 retailers as of October 31, 2026, with prices from £716 to £3,663, a £2,947 spread on the same certified stone. MOH London lists it at £3,663. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067665
Dimensions7.30 × 7.03 × 4.64 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
7.30 mm7.03 mm1.72 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067665
Side View
Table 59.5%Crown 37.2°Girdle: THK-VTKPavilion 40.7°Culet: NoneDepth 66.0%

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 31
Current: £3,663 GBP|Low: £716 GBP|High: £3,713 GBP|Avg: £2,042 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2£716 GBP
Retailer 5£1,238 GBP
Retailer 3£1,283 GBP
Retailer 6£1,411 GBP
Retailer 7£1,745 GBP
Retailer 4£2,021 GBP
MOH London£3,663 GBP
Retailer 8£3,673 GBP

15 data points across 8 retailers

6 retailers£716 GBP to £3,663 GBP

A
Cheapest Retailer
-
£716 GBP
$960 USD
B
Retailer 2
-
£1,238 GBP
$1,659 USD
View
Final sale: no returns
Retailer 3
-
£1,283 GBP
$1,719 USD
View
Price last confirmed 20 days ago
B
Retailer 4
-
£1,411 GBP
$1,890 USD
View
B
Retailer 5
-
£2,021 GBP
$2,708 USD
View
Most Expensive
B
MOH London
LG425067665 · Nov 1
£3,663 GBP
View
5 more retailers have this diamond
Prices start from £716 GBPSave up to £2,947 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 Cushion
£716 GBP