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Cushion|Lab Grown|IGI

0.73ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG468186992

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG468186992

Diamond specifications and retailer prices

From £210 GBP
$282 USD
As of November 1, 2026
Save £75 GBP (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £908 GBP at MOH London · As of October 15, 2026
View at MOH London

About this 0.73ct lab-grown cushion diamond

This 0.73ct lab-grown cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG468186992 or 468186992. Listed at 4 retailers as of November 1, 2026, with a 35% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.73
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG468186992
Dimensions5.26 × 5.14 × 3.59 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process.
Top View
5.26 mm5.14 mm0.73 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG468186992
Side View
Table 59.5%Crown 35.5°Girdle: STK-VTKPavilion 41°Culet: NoneDepth 69.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £908 GBP|Low: £146 GBP|High: £909 GBP|Avg: £490 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 3£210 GBP
Retailer 2£219 GBP
Retailer 4£285 GBP
Retailer 5£508 GBP
Retailer 6£657 GBP
Retailer 7£657 GBP
MOH London£908 GBP

36 data points across 7 retailers

4 retailers£210 GBP to £285 GBP

A
Cheapest Retailer
-
£210 GBP
$282 USD
A
Retailer 2
-
£219 GBP
View
B+
Retailer 3
-
£285 GBP
$382 USD
View
Most Expensive
MOH London
LG468186992 · Oct 15
£908 GBP
View
Price last confirmed 17 days ago
3 more retailers have this diamond
Prices start from £210 GBPSave up to £75 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
0.73ct Cushion
£210 GBP