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Cushion|Lab Grown|IGI

1.73ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG804650251

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG804650251

Diamond specifications and retailer prices

From £558 GBP
As of November 2, 2026
Save £2,862 GBP (84%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,420 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 LG804650251 or 804650251. Listed at 9 retailers as of November 2, 2026, with prices from £558 to £3,420, a £2,862 spread on the same certified stone. Do Amore Diamonds lists it at £3,420. 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 angle34.4°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804650251
Dimensions8.92 × 6.07 × 3.87 mm
L/W Ratio1.47
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
8.92 mm6.07 mm1.73 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804650251
Side View
Table 64.0%Crown 34.4°Girdle: MED-THKPavilion 33.6°Culet: NoneDepth 63.8%

Caratlytics Score

How it works →
A+
Exceptional
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: Nov 2
Current: £3,420 GBP|Low: £461 GBP|High: £3,704 GBP|Avg: £1,598 GBP|-7.6%
Do Amore Diamonds
Retailer 2
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November 2, 2026
Retailer 6£461 GBP
Retailer 5£499 GBP
Retailer 2£558 GBP
Retailer 12£741 GBP
Retailer 16£741 GBP
Retailer 18£864 GBP
Retailer 4£1,096 GBP
Retailer 17£1,109 GBP
Retailer 13£1,187 GBP
Retailer 9£1,259 GBP
Retailer 15£1,534 GBP
Retailer 3£1,862 GBP
Retailer 8£1,997 GBP
Retailer 11£2,291 GBP
Retailer 7£2,510 GBP
Retailer 14£2,668 GBP
Retailer 10£2,818 GBP
Do Amore Diamonds£3,420 GBP

22 data points across 18 retailers

9 retailers£558 GBP to £3,420 GBP

A+
Cheapest Retailer
-
£558 GBP
A
Retailer 2
-
£741 GBP
$995 USD
View
A
Retailer 3
-
£741 GBP
$995 USD
View
A
Retailer 4
-
£1,187 GBP
$1,593 USD
View
B+
Retailer 5
-
£1,534 GBP
$2,059 USD
View
Retailer 6
-
£1,997 GBP
$2,680 USD
View
Price last confirmed 54 days ago
B+
Retailer 7
-
£2,291 GBP
View
B+
Retailer 8
-
£2,668 GBP
$3,580 USD
View
Most Expensive
B
Do Amore Diamonds
27-68201D62D · Nov 2
£3,420 GBP
$4,590 USD
View
8 more retailers have this diamond
Prices start from £558 GBPSave up to £2,862 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
£558 GBP