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Cushion|Lab Grown|IGI

4.51ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG726562220

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

Certificate IGI LG726562220

Diamond specifications and retailer prices

From €1,276 EUR
$1,425 USD
As of October 31, 2026
Save €8,060 EUR (86%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €9,336 EUR at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.51ct lab-grown cushion diamond

This 4.51ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG726562220 or 726562220. Listed at 14 retailers as of October 29, 2026, with prices from €1,276 to €9,336, a €8,060 spread on the same certified stone. Brilliant Earth lists it at €9,336. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.51
Carat
D
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle42.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG726562220
Dimensions9.73 × 9.49 × 6.46 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.73 mm9.49 mm4.51 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG726562220
Side View
Table 54.0%Crown 37.7°Girdle: THK-VTKPavilion 42.5°Culet: LargeDepth 68.1%

Caratlytics Score

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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 31
Current: €9,336 EUR|Low: €1,276 EUR|High: €9,622 EUR|Avg: €3,273 EUR|-3.0%
Brilliant Earth
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
October 31, 2026
Retailer 10€1,276 EUR
Retailer 14€1,322 EUR
Retailer 9€1,477 EUR
Retailer 3€1,650 EUR
Retailer 2€1,864 EUR
Retailer 13€2,094 EUR
Retailer 4€2,349 EUR
Retailer 7€2,815 EUR
Retailer 5€3,192 EUR
Retailer 12€3,794 EUR
Retailer 11€3,943 EUR
Retailer 8€4,272 EUR
Retailer 6€4,641 EUR
Brilliant Earth€9,336 EUR

36 data points across 14 retailers

14 retailers€1,276 EUR to €9,336 EUR

A
Cheapest Retailer
-
€1,276 EUR
$1,425 USD
Final sale: no returns
Retailer 2
-
€1,322 EUR
$1,477 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
€1,477 EUR
$1,650 USD
View
B+
Retailer 4
-
€1,650 EUR
$1,843 USD
View
A
Retailer 5
-
€1,864 EUR
£1,639 GBP
View
B+
Retailer 6
-
€2,094 EUR
$2,339 USD
View
B+
Retailer 7
-
€2,349 EUR
$2,624 USD
View
B+
Retailer 8
-
€2,815 EUR
ZAR 50,804 ZAR
View
B
Retailer 9
-
€3,192 EUR
£2,808 GBP
View
B
Retailer 10
-
€3,794 EUR
$4,239 USD
View
B
Retailer 11
-
€3,943 EUR
$4,405 USD
View
B
Retailer 12
-
€4,272 EUR
£3,758 GBP
View
B
Retailer 13
-
€4,641 EUR
$5,185 USD
View
Most Expensive
B
Brilliant Earth
20359331A · Oct 29
€9,336 EUR
$10,430 USD
View
13 more retailers have this diamond
Prices start from €1,276 EURSave up to €8,060 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
4.51ct Cushion
€1,276 EUR