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Cushion|Lab Grown|IGI

1.51ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • IGI LG774618688

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG774618688

Diamond specifications and retailer prices

From €287 EUR
$322 USD
As of November 1, 2026
Save €707 EUR (71%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,042 EUR at Reve Diamonds · As of October 25, 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG774618688 or 774618688. Listed at 14 retailers as of October 26, 2026, with a 246% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.2°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG774618688
Dimensions7.18 × 5.56 × 3.94 mm
L/W Ratio1.29
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.18 mm5.56 mm1.51 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG774618688
Side View
Table 64.0%Crown 44.2°Girdle: MED-THKPavilion 33.1°Culet: NoneDepth 70.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: €531 EUR|Low: €191 EUR|High: €1,094 EUR|Avg: €578 EUR|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 2, 2026
Retailer 2€191 EUR
Retailer 11€273 EUR
Retailer 3€287 EUR
Retailer 5€356 EUR
Retailer 8€385 EUR
Retailer 6€421 EUR
Retailer 12€509 EUR
Retailer 1€531 EUR
Retailer 4€731 EUR
Retailer 10€749 EUR
Retailer 7€820 EUR
Retailer 9€994 EUR
Reve Diamonds€1,042 EUR

39 data points across 13 retailers

14 retailers€287 EUR to €994 EUR

Retailer 1
-
€273 EUR
£241 GBP
Price last confirmed 16 days ago
B+
Retailer 2
-
€287 EUR
$322 USD
View
A
Retailer 3
-
€356 EUR
View
A
Retailer 4
-
€385 EUR
£340 GBP
View
B+
Retailer 5
-
€421 EUR
$472 USD
View
Retailer 6
-
€509 EUR
$571 USD
View
Price last confirmed 7 days ago
Retailer 7
-
€513 EUR
$575 USD
View
Price last confirmed 21 days ago
B+
Retailer 8
-
€531 EUR
$596 USD
View
B+
Retailer 9
-
€731 EUR
$820 USD
View
B+
Retailer 10
-
€749 EUR
$840 USD
View
Retailer 11
-
€767 EUR
$860 USD
View
Price last confirmed 39 days ago
B
Retailer 12
-
€820 EUR
$920 USD
View
B
Retailer 13
-
€994 EUR
£878 GBP
View
Most Expensive
Reve Diamonds
8532F276D · Oct 25
€1,042 EUR
$1,169 USD
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from €287 EURSave up to €707 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
€287 EUR