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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 HK$1,615 HKD
As of November 6, 2026
Save HK$7,356 HKD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$8,971 HKD 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 HK$1,615 to HK$8,971, a HK$7,356 spread on the same certified stone. Reve Diamonds lists it at HK$8,971. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$4,122 HKD|Low: HK$1,615 HKD|High: HK$10,110 HKD|Avg: HK$4,246 HKD
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 3HK$1,615 HKD
Retailer 12HK$1,795 HKD
Retailer 11HK$2,430 HKD
Retailer 7HK$2,939 HKD
Retailer 6HK$3,213 HKD
Retailer 4HK$3,566 HKD
Retailer 1HK$4,122 HKD
Retailer 9HK$4,271 HKD
Retailer 2HK$4,405 HKD
Retailer 5HK$6,662 HKD
Retailer 8HK$8,386 HKD
Retailer 10HK$8,700 HKD

44 data points across 12 retailers

15 retailersHK$1,615 HKD to HK$8,971 HKD

A
Cheapest Retailer
-
HK$1,615 HKD
Final sale: no returns
A
Retailer 2
-
HK$1,795 HKD
View
B+
Retailer 3
-
HK$2,430 HKD
View
A
Retailer 4
-
HK$2,939 HKD
View
A
Retailer 5
-
HK$3,213 HKD
View
A
Retailer 6
-
HK$3,488 HKD
View
A
Retailer 7
-
HK$3,566 HKD
View
A
Retailer 8
-
HK$4,122 HKD
View
A
Retailer 9
-
HK$4,271 HKD
View
B+
Retailer 10
-
HK$4,405 HKD
View
B
Retailer 11
-
HK$6,192 HKD
View
B+
Retailer 12
-
HK$6,662 HKD
View
B
Retailer 13
-
HK$8,386 HKD
View
B
Retailer 14
-
HK$8,700 HKD
View
Most Expensive
B
Reve Diamonds
CF8011C43 · Nov 6
HK$8,971 HKD
$1,145 USD
View
14 more retailers have this diamond
Prices start from HK$1,615 HKDSave up to HK$7,356 HKD

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
HK$1,615 HKD