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Cushion|Lab Grown|IGI

1.51ct F IF Cushion Lab Grown Diamond

ID • F/IF • IGI LG825633151

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

Certificate IGI LG825633151

Diamond specifications and retailer prices

From €345 EUR
£304 GBP
As of November 1, 2026
Save €1,626 EUR (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,970 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825633151 or 825633151. Listed at 12 retailers as of October 31, 2026, with prices from €345 to €1,970, a €1,626 spread on the same certified stone. Brilliant Earth lists it at €1,970. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825633151
Dimensions6.58 × 6.49 × 4.49 mm
L/W Ratio1.01
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
6.58 mm6.49 mm1.51 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825633151
Side View
Table 65.0%Crown 35.1°Girdle: STK-THKPavilion 42°Culet: NoneDepth 69.2%

Caratlytics Score

How it works →
A
Excellent
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 1
Current: €595 EUR|Low: €345 EUR|High: €1,623 EUR|Avg: €909 EUR|+3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6€345 EUR
Retailer 8€448 EUR
Retailer 7€473 EUR
Retailer 4€577 EUR
Retailer 1€595 EUR
Retailer 11€632 EUR
Retailer 2€897 EUR
Retailer 3€1,118 EUR
Retailer 9€1,287 EUR
Retailer 5€1,342 EUR
Retailer 10€1,618 EUR

40 data points across 11 retailers

12 retailers€345 EUR to €1,970 EUR

A
Cheapest Retailer
-
€345 EUR
£304 GBP
A
Retailer 2
-
€448 EUR
$502 USD
View
A
Retailer 3
-
€473 EUR
$530 USD
View
A
Retailer 4
-
€577 EUR
ZAR 10,459 ZAR
View
A
Retailer 5
-
€595 EUR
£525 GBP
View
A
Retailer 6
-
€632 EUR
$709 USD
View
A
Retailer 7
-
€897 EUR
$1,006 USD
View
A
Retailer 8
-
€1,118 EUR
$1,254 USD
View
B+
Retailer 9
-
€1,287 EUR
$1,443 USD
View
A
Retailer 10
-
€1,342 EUR
£1,185 GBP
View
Retailer 11
-
€1,618 EUR
$1,815 USD
View
Price last confirmed 12 days ago
Most Expensive
B+
Brilliant Earth
22411700A · Oct 31
€1,970 EUR
$2,210 USD
View
11 more retailers have this diamond
Prices start from €345 EURSave up to €1,626 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
€345 EUR