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Cushion|Lab Grown|IGI

1.57ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG425067660

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG425067660

Diamond specifications and retailer prices

From HK$6,904 HKD
$880 USD
As of October 31, 2026
Save HK$32,713 HKD (83%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$39,617 HKD at MOH London · As of November 1, 2026
View at MOH London

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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425067660 or 425067660. Listed at 6 retailers as of October 31, 2026, with prices from HK$6,904 to HK$39,617, a HK$32,713 spread on the same certified stone. MOH London lists it at HK$39,617. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle42.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067660
Dimensions7.18 × 6.73 × 4.55 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.18 mm6.73 mm1.57 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067660
Side View
Table 58.0%Crown 35°Girdle: STK-THKPavilion 42.5°Culet: NoneDepth 67.6%

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 31
Current: HK$39,617 HKD|Low: HK$6,904 HKD|High: HK$40,155 HKD|Avg: HK$19,560 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2HK$6,904 HKD
Retailer 5HK$11,894 HKD
Retailer 3HK$12,333 HKD
Retailer 6HK$13,691 HKD
Retailer 9HK$15,676 HKD
Retailer 7HK$16,923 HKD
Retailer 4HK$19,489 HKD
Retailer 8HK$35,313 HKD
MOH LondonHK$39,617 HKD

14 data points across 9 retailers

6 retailersHK$6,904 HKD to HK$39,617 HKD

A
Cheapest Retailer
-
HK$6,904 HKD
$880 USD
B
Retailer 2
-
HK$11,894 HKD
$1,516 USD
View
Final sale: no returns
Retailer 3
-
HK$12,333 HKD
$1,572 USD
View
Price last confirmed 20 days ago
B
Retailer 4
-
HK$13,691 HKD
$1,745 USD
View
B
Retailer 5
-
HK$19,489 HKD
$2,484 USD
View
Most Expensive
B
MOH London
LG425067660 · Nov 1
HK$39,617 HKD
£3,976 GBP
View
5 more retailers have this diamond
Prices start from HK$6,904 HKDSave up to HK$32,713 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$6,904 HKD