CaratHunter
Plans
Cushion|Lab Grown|IGI

1.57ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG526288477

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG526288477

Diamond specifications and retailer prices

From HK$1,679 HKD
$214 USD
As of October 30, 2026
Save HK$7,485 HKD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$9,164 HKD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.57ct lab-grown cushion diamond

This 1.57ct 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 LG526288477 or 526288477. Listed at 14 retailers as of October 30, 2026, with prices from HK$1,679 to HK$9,164, a HK$7,485 spread on the same certified stone. Reve Diamonds lists it at HK$9,164. 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

1.57
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle31.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526288477
Dimensions6.82 × 6.39 × 4.03 mm
L/W Ratio1.07
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
6.82 mm6.39 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526288477
Side View
Table 67.0%Crown 36.5°Girdle: STK-THKPavilion 31.1°Culet: NoneDepth 63.1%

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$3,393 HKD|Low: HK$1,679 HKD|High: HK$9,023 HKD|Avg: HK$4,556 HKD|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2HK$1,679 HKD
Retailer 10HK$1,867 HKD
Retailer 5HK$2,511 HKD
Retailer 4HK$3,090 HKD
Retailer 1HK$3,393 HKD
Retailer 3HK$3,740 HKD
Retailer 11HK$4,496 HKD
Retailer 7HK$4,731 HKD
Retailer 8HK$6,748 HKD
Retailer 6HK$8,779 HKD
Retailer 9HK$8,788 HKD

43 data points across 11 retailers

14 retailersHK$1,679 HKD to HK$9,164 HKD

A
Cheapest Retailer
-
HK$1,679 HKD
$214 USD
Final sale: no returns
A
Retailer 2
-
HK$1,867 HKD
$238 USD
View
B+
Retailer 3
-
HK$2,511 HKD
$320 USD
View
A
Retailer 4
-
HK$3,090 HKD
€375 EUR
View
A
Retailer 5
-
HK$3,393 HKD
£341 GBP
View
A
Retailer 6
-
HK$3,740 HKD
$477 USD
View
A
Retailer 7
-
HK$3,774 HKD
$481 USD
View
B+
Retailer 8
-
HK$4,496 HKD
$573 USD
View
B+
Retailer 9
-
HK$4,731 HKD
$603 USD
View
B+
Retailer 10
-
HK$6,426 HKD
$819 USD
View
Retailer 11
-
HK$6,748 HKD
$860 USD
View
Price last confirmed 8 days ago
Retailer 12
-
HK$8,779 HKD
£881 GBP
View
Price last confirmed 9 days ago
B
Retailer 13
-
HK$8,788 HKD
$1,120 USD
View
Most Expensive
B
Reve Diamonds
8AED4C9E6 · Oct 30
HK$9,164 HKD
$1,168 USD
View
13 more retailers have this diamond
Prices start from HK$1,679 HKDSave up to HK$7,485 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
1.57ct Cushion
HK$1,679 HKD