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Cushion|Lab Grown|IGI

1.73ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846662373

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846662373

Diamond specifications and retailer prices

From £559 GBP
As of October 30, 2026
Save £2,331 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,890 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.73ct lab-grown cushion diamond

This 1.73ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846662373 or 846662373. Listed at 10 retailers as of October 29, 2026, with prices from £559 to £2,890, a £2,331 spread on the same certified stone. MOH London lists it at £2,890. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662373
Dimensions9.04 × 6.04 × 4.03 mm
L/W Ratio1.50
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 Type II
Top View
9.04 mm6.04 mm1.73 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662373
Side View
Table 60.0%Crown 34.8°Girdle: MED-VTKPavilion 33.4°Culet: NoneDepth 66.7%

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 30
Current: £2,890 GBP|Low: £559 GBP|High: £5,567 GBP|Avg: £2,085 GBP|+4.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 9£559 GBP
Retailer 4£627 GBP
Retailer 8£811 GBP
Retailer 6£1,062 GBP
Retailer 3£1,443 GBP
Retailer 2£1,753 GBP
Retailer 5£1,929 GBP
Retailer 10£2,202 GBP
Retailer 7£2,694 GBP
MOH London£2,890 GBP

15 data points across 10 retailers

10 retailers£559 GBP to £2,890 GBP

A
Cheapest Retailer
-
£559 GBP
A
Retailer 2
-
£627 GBP
$840 USD
View
A
Retailer 3
-
£811 GBP
$1,086 USD
View
A
Retailer 4
-
£1,062 GBP
$1,423 USD
View
B+
Retailer 5
-
£1,443 GBP
€1,841 EUR
View
B+
Retailer 6
-
£1,753 GBP
$2,349 USD
View
B+
Retailer 7
-
£1,929 GBP
$2,585 USD
View
Retailer 8
-
£2,202 GBP
$2,950 USD
View
Price last confirmed 11 days ago
B
Retailer 9
-
£2,694 GBP
$3,610 USD
View
Most Expensive
B
MOH London
LG846662373 · Oct 29
£2,890 GBP
View
9 more retailers have this diamond
Prices start from £559 GBPSave up to £2,331 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
1.73ct Cushion
£559 GBP