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Cushion|Lab Grown|IGI

1.50ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG775629456

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

Certificate IGI LG775629456

Diamond specifications and retailer prices

From HK$1,561 HKD
$199 USD
As of November 1, 2026
Save HK$7,304 HKD (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$8,866 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG775629456 or 775629456. Listed at 12 retailers as of October 31, 2026, with prices from HK$1,561 to HK$8,866, a HK$7,304 spread on the same certified stone. Brilliant Earth lists it at HK$8,866. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.1°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG775629456
Dimensions6.71 × 6.60 × 4.07 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.71 mm6.60 mm1.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG775629456
Side View
Table 65.0%Crown 32.1°Girdle: MED-STKPavilion 34.6°Culet: NoneDepth 61.7%

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: HK$8,866 HKD|Low: HK$1,561 HKD|High: HK$9,886 HKD|Avg: HK$4,233 HKD|-9.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 10HK$1,561 HKD
Retailer 3HK$1,836 HKD
Retailer 11HK$3,068 HKD
Retailer 5HK$3,102 HKD
Retailer 6HK$3,205 HKD
Retailer 4HK$3,219 HKD
Retailer 8HK$3,750 HKD
Retailer 9HK$3,766 HKD
Retailer 7HK$4,339 HKD
Retailer 12HK$5,977 HKD
Retailer 2HK$8,071 HKD
Brilliant EarthHK$8,866 HKD

45 data points across 12 retailers

12 retailersHK$1,561 HKD to HK$8,866 HKD

A
Cheapest Retailer
-
HK$1,561 HKD
$199 USD
Final sale: no returns
Retailer 2
-
HK$1,836 HKD
$234 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
HK$3,068 HKD
$391 USD
View
A
Retailer 4
-
HK$3,102 HKD
£311 GBP
View
A
Retailer 5
-
HK$3,205 HKD
€389 EUR
View
Retailer 6
-
HK$3,219 HKD
£323 GBP
View
Price last confirmed 18 days ago
A
Retailer 7
-
HK$3,750 HKD
$478 USD
View
A
Retailer 8
-
HK$3,766 HKD
$480 USD
View
B+
Retailer 9
-
HK$4,339 HKD
$553 USD
View
B+
Retailer 10
-
HK$5,977 HKD
$762 USD
View
B
Retailer 11
-
HK$8,071 HKD
£810 GBP
View
Most Expensive
B
Brilliant Earth
17807477A · Oct 31
HK$8,866 HKD
$1,130 USD
View
11 more retailers have this diamond
Prices start from HK$1,561 HKDSave up to HK$7,304 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$1,561 HKD