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Cushion|Lab Grown|IGI

1.50ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG523299010

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG523299010

Diamond specifications and retailer prices

From €185 EUR
As of November 6, 2026
Save €841 EUR (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,025 EUR at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG523299010 or 523299010. Listed at 15 retailers as of November 6, 2026, with prices from €185 to €1,025, a €841 spread on the same certified stone. Reve Diamonds lists it at €1,025. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523299010
Dimensions6.60 × 6.36 × 4.22 mm
L/W Ratio1.04
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
6.60 mm6.36 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523299010
Side View
Table 63.0%Crown 33.7°Girdle: MED-THKPavilion 36.9°Culet: NoneDepth 66.4%

Caratlytics Score

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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 6
Current: €471 EUR|Low: €185 EUR|High: €1,155 EUR|Avg: €485 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
November 7, 2026
Retailer 3€185 EUR
Retailer 12€205 EUR
Retailer 11€278 EUR
Retailer 7€336 EUR
Retailer 6€367 EUR
Retailer 4€408 EUR
Retailer 1€471 EUR
Retailer 9€488 EUR
Retailer 2€503 EUR
Retailer 5€761 EUR
Retailer 8€958 EUR
Retailer 10€994 EUR

44 data points across 12 retailers

15 retailers€185 EUR to €1,025 EUR

A
Cheapest Retailer
-
€185 EUR
Final sale: no returns
A
Retailer 2
-
€205 EUR
View
B+
Retailer 3
-
€278 EUR
View
A
Retailer 4
-
€336 EUR
View
A
Retailer 5
-
€367 EUR
View
A
Retailer 6
-
€399 EUR
View
A
Retailer 7
-
€408 EUR
View
A
Retailer 8
-
€471 EUR
View
A
Retailer 9
-
€488 EUR
View
B+
Retailer 10
-
€503 EUR
View
B
Retailer 11
-
€708 EUR
View
B+
Retailer 12
-
€761 EUR
View
B
Retailer 13
-
€958 EUR
View
B
Retailer 14
-
€994 EUR
View
Most Expensive
B
Reve Diamonds
CF8011C43 · Nov 6
€1,025 EUR
$1,145 USD
View
14 more retailers have this diamond
Prices start from €185 EURSave up to €841 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
1.50ct Cushion
€185 EUR