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Cushion|Lab Grown|IGI

1.74ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG526288478

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG526288478

Diamond specifications and retailer prices

From HK$1,836 HKD
$234 USD
As of October 28, 2026
Save HK$15,502 HKD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$17,338 HKD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.74ct lab-grown cushion diamond

This 1.74ct 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 LG526288478 or 526288478. Listed at 15 retailers as of October 28, 2026, with prices from HK$1,836 to HK$17,338, a HK$15,502 spread on the same certified stone. Brilliant Earth lists it at HK$17,338. 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

1.74
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526288478
Dimensions7.05 × 6.86 × 4.23 mm
L/W Ratio1.03
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
7.05 mm6.86 mm1.74 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526288478
Side View
Table 62.0%Crown 35°Girdle: MED-STKPavilion 31.9°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: Oct 28
Current: HK$17,338 HKD|Low: HK$1,836 HKD|High: HK$17,338 HKD|Avg: HK$5,203 HKD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 3HK$1,836 HKD
Retailer 11HK$2,040 HKD
Retailer 5HK$2,746 HKD
Retailer 2HK$3,336 HKD
Retailer 6HK$3,749 HKD
Retailer 4HK$4,144 HKD
Retailer 9HK$4,273 HKD
Retailer 12HK$4,699 HKD
Retailer 10HK$5,248 HKD
Retailer 7HK$8,190 HKD
Retailer 8HK$8,277 HKD
Brilliant EarthHK$17,338 HKD

42 data points across 12 retailers

15 retailersHK$1,836 HKD to HK$17,338 HKD

A
Cheapest Retailer
-
HK$1,836 HKD
$234 USD
Final sale: no returns
A
Retailer 2
-
HK$2,040 HKD
$260 USD
View
B+
Retailer 3
-
HK$2,746 HKD
$350 USD
View
A
Retailer 4
-
HK$3,336 HKD
€405 EUR
View
A
Retailer 5
-
HK$3,749 HKD
£376 GBP
View
A
Retailer 6
-
HK$4,144 HKD
$528 USD
View
A
Retailer 7
-
HK$4,273 HKD
A$838 AUD
View
A
Retailer 8
-
HK$4,542 HKD
$579 USD
View
A
Retailer 9
-
HK$4,699 HKD
$599 USD
View
B+
Retailer 10
-
HK$5,248 HKD
$669 USD
View
B+
Retailer 11
-
HK$6,975 HKD
$889 USD
View
B+
Retailer 12
-
HK$8,190 HKD
£822 GBP
View
B+
Retailer 13
-
HK$8,277 HKD
$1,055 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
HK$9,607 HKD
$1,225 USD
View
Most Expensive
B
Brilliant Earth
10788643A · Oct 28
HK$17,338 HKD
$2,210 USD
View
14 more retailers have this diamond
Prices start from HK$1,836 HKDSave up to HK$15,502 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
1.74ct Cushion
HK$1,836 HKD