CaratHunter
Plans
Cushion|Lab Grown|IGI

1.73ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG541275348

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG541275348

Diamond specifications and retailer prices

From HK$1,773 HKD
$226 USD
As of October 30, 2026
Save HK$9,917 HKD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$11,690 HKD at Brilliant Earth · As of October 31, 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 LG541275348 or 541275348. Listed at 12 retailers as of October 30, 2026, with prices from HK$1,773 to HK$11,690, a HK$9,917 spread on the same certified stone. Brilliant Earth lists it at HK$11,690. 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 angle34.8°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG541275348
Dimensions7.25 × 6.65 × 4.27 mm
L/W Ratio1.09
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
7.25 mm6.65 mm1.73 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG541275348
Side View
Table 60.0%Crown 34.8°Girdle: MED-THKPavilion 35.6°Culet: NoneDepth 64.2%

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: Oct 30
Current: HK$11,690 HKD|Low: HK$1,773 HKD|High: HK$12,004 HKD|Avg: HK$5,192 HKD|-2.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 10HK$1,773 HKD
Retailer 5HK$1,938 HKD
Retailer 2HK$3,295 HKD
Retailer 8HK$3,381 HKD
Retailer 3HK$3,554 HKD
Retailer 6HK$4,025 HKD
Retailer 7HK$4,856 HKD
Retailer 9HK$6,340 HKD
Retailer 4HK$9,117 HKD
Brilliant EarthHK$11,690 HKD

41 data points across 10 retailers

12 retailersHK$1,773 HKD to HK$11,690 HKD

A
Cheapest Retailer
-
HK$1,773 HKD
$226 USD
Final sale: no returns
A
Retailer 2
-
HK$1,938 HKD
$247 USD
View
A
Retailer 3
-
HK$2,209 HKD
View
A
Retailer 4
-
HK$3,295 HKD
€400 EUR
View
B+
Retailer 5
-
HK$3,381 HKD
$431 USD
View
A
Retailer 6
-
HK$3,554 HKD
£357 GBP
View
A
Retailer 7
-
HK$4,025 HKD
$513 USD
View
A
Retailer 8
-
HK$4,856 HKD
$619 USD
View
B+
Retailer 9
-
HK$6,340 HKD
SGD 1,092 SGD
View
B
Retailer 10
-
HK$9,117 HKD
£915 GBP
View
Retailer 11
-
HK$9,435 HKD
$1,203 USD
View
Price last confirmed 83 days ago
Most Expensive
B
Brilliant Earth
19055824A · Oct 31
HK$11,690 HKD
$1,490 USD
View
11 more retailers have this diamond
Prices start from HK$1,773 HKDSave up to HK$9,917 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$1,773 HKD