Cushion|Lab Grown|IGI

1.54ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG816673339

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG816673339

Diamond specifications and retailer prices

From €494 EUR
$552 USD
As of November 1, 2026
Save €1,802 EUR (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €4,126 EUR at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.54ct lab-grown cushion diamond

This 1.54ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816673339 or 816673339. Listed at 16 retailers as of October 29, 2026, with a 365% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816673339
Dimensions6.81 × 6.63 × 4.36 mm
L/W Ratio1.03
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
6.81 mm6.63 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816673339
Side View
Table 61.0%Crown 36.7°Girdle: STK-VTKPavilion 37.9°Culet: NoneDepth 65.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: €578 EUR|Low: €494 EUR|High: €2,311 EUR|Avg: €1,267 EUR|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 15€494 EUR
Retailer 1€578 EUR
Retailer 14€658 EUR
Retailer 7€734 EUR
Retailer 4€756 EUR
Retailer 9€820 EUR
Retailer 8€910 EUR
Retailer 13€940 EUR
Retailer 5€994 EUR
Retailer 11€1,274 EUR
Retailer 6€1,783 EUR
Retailer 3€1,905 EUR
Retailer 2€2,046 EUR
Retailer 10€2,214 EUR
Retailer 12€2,296 EUR

41 data points across 15 retailers

16 retailers€494 EUR to €2,296 EUR

A
Cheapest Retailer
-
€494 EUR
$552 USD
Final sale: no returns
A
Retailer 2
-
€578 EUR
£509 GBP
View
A
Retailer 3
-
€658 EUR
$735 USD
View
A
Retailer 4
-
€734 EUR
$820 USD
View
A
Retailer 5
-
€756 EUR
$845 USD
View
A
Retailer 6
-
€820 EUR
View
A
Retailer 7
-
€910 EUR
£800 GBP
View
A
Retailer 8
-
€940 EUR
ZAR 16,969 ZAR
View
A
Retailer 9
-
€994 EUR
$1,111 USD
View
A
Retailer 10
-
€1,274 EUR
A$2,190 AUD
View
B+
Retailer 11
-
€1,783 EUR
$1,992 USD
View
B+
Retailer 12
-
€1,905 EUR
$2,128 USD
View
B+
Retailer 13
-
€2,046 EUR
$2,286 USD
View
B+
Retailer 14
-
€2,214 EUR
A$3,806 AUD
View
B+
Retailer 15
-
€2,296 EUR
£2,020 GBP
View
Most Expensive
Brilliant Earth
20907181A · Sep 28
€4,126 EUR
$4,610 USD
View
Price last confirmed 34 days ago
15 more retailers have this diamond
Prices start from €494 EURSave up to €1,802 EUR

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
1.54ct Cushion
€494 EUR