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Cushion|Lab Grown|IGI

1.51ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG529262735

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG529262735

Diamond specifications and retailer prices

From €188 EUR
As of November 6, 2026
Save €846 EUR (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,034 EUR at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG529262735 or 529262735. Listed at 16 retailers as of November 6, 2026, with prices from €188 to €1,034, a €846 spread on the same certified stone. Reve Diamonds lists it at €1,034. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529262735
Dimensions6.47 × 6.32 × 4.23 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
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
6.47 mm6.32 mm1.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529262735
Side View
Table 65.5%Crown 36.7°Girdle: THK-VTKPavilion 33.5°Culet: NoneDepth 66.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: €478 EUR|Low: €188 EUR|High: €1,120 EUR|Avg: €520 EUR
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
November 7, 2026
Retailer 4€188 EUR
Retailer 2€209 EUR
Retailer 12€282 EUR
Retailer 9€342 EUR
Retailer 8€373 EUR
Retailer 5€416 EUR
Retailer 1€478 EUR
Retailer 10€498 EUR
Retailer 3€507 EUR
Retailer 6€771 EUR
Retailer 13€900 EUR
Retailer 7€969 EUR
Retailer 11€1,021 EUR

43 data points across 13 retailers

16 retailers€188 EUR to €1,034 EUR

A
Cheapest Retailer
-
€188 EUR
Final sale: no returns
A
Retailer 2
-
€209 EUR
View
B+
Retailer 3
-
€282 EUR
View
A
Retailer 4
-
€342 EUR
View
A
Retailer 5
-
€373 EUR
View
B+
Retailer 6
-
€416 EUR
View
B+
Retailer 7
-
€437 EUR
View
B+
Retailer 8
-
€478 EUR
View
B+
Retailer 9
-
€498 EUR
View
B+
Retailer 10
-
€507 EUR
View
B
Retailer 11
-
€717 EUR
View
B
Retailer 12
-
€771 EUR
View
Retailer 13
-
€900 EUR
View
Price last confirmed 17 days ago
B
Retailer 14
-
€969 EUR
View
B
Retailer 15
-
€1,021 EUR
View
Most Expensive
B
Reve Diamonds
8D3494472 · Nov 6
€1,034 EUR
$1,154 USD
View
15 more retailers have this diamond
Prices start from €188 EURSave up to €846 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
1.51ct Cushion
€188 EUR