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Cushion|Lab Grown|IGI

1.73ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG522239300

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG522239300

Diamond specifications and retailer prices

From HK$1,844 HKD
$235 USD
As of October 30, 2026
Save HK$10,631 HKD (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$12,475 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.73ct lab-grown cushion diamond

This 1.73ct 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 LG522239300 or 522239300. Listed at 13 retailers as of October 29, 2026, with prices from HK$1,844 to HK$12,475, a HK$10,631 spread on the same certified stone. Brilliant Earth lists it at HK$12,475. 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

1.73
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522239300
Dimensions7.06 × 6.69 × 4.24 mm
L/W Ratio1.06
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
7.06 mm6.69 mm1.73 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522239300
Side View
Table 62.5%Crown 33.2°Girdle: STK-VTKPavilion 32°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
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: Oct 30
Current: HK$12,475 HKD|Low: HK$1,844 HKD|High: HK$13,102 HKD|Avg: HK$5,529 HKD|-4.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 9HK$1,844 HKD
Retailer 5HK$2,762 HKD
Retailer 2HK$3,336 HKD
Retailer 3HK$3,790 HKD
Retailer 10HK$4,181 HKD
Retailer 8HK$4,707 HKD
Retailer 4HK$4,998 HKD
Retailer 6HK$8,260 HKD
Retailer 7HK$8,944 HKD
Brilliant EarthHK$12,475 HKD

45 data points across 10 retailers

13 retailersHK$1,844 HKD to HK$12,475 HKD

A
Cheapest Retailer
-
HK$1,844 HKD
$235 USD
Final sale: no returns
B+
Retailer 2
-
HK$2,762 HKD
$352 USD
View
A
Retailer 3
-
HK$3,336 HKD
€405 EUR
View
A
Retailer 4
-
HK$3,790 HKD
£380 GBP
View
A
Retailer 5
-
HK$4,181 HKD
$533 USD
View
A
Retailer 6
-
HK$4,707 HKD
$600 USD
View
B+
Retailer 7
-
HK$4,888 HKD
$623 USD
View
A
Retailer 8
-
HK$4,998 HKD
$637 USD
View
B
Retailer 9
-
HK$7,011 HKD
$894 USD
View
B+
Retailer 10
-
HK$8,260 HKD
£829 GBP
View
Retailer 11
-
HK$8,944 HKD
$1,140 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
HK$9,636 HKD
$1,228 USD
View
Most Expensive
B
Brilliant Earth
10788459A · Oct 29
HK$12,475 HKD
$1,590 USD
View
12 more retailers have this diamond
Prices start from HK$1,844 HKDSave up to HK$10,631 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
1.73ct Cushion
HK$1,844 HKD