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Cushion|Lab Grown|IGI

1.80ct J SI1 Cushion Lab Grown Diamond

ID • J/SI1 • IGI LG436045153

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG436045153

Diamond specifications and retailer prices

From HK$7,924 HKD
$1,010 USD
As of October 31, 2026
Save HK$31,235 HKD (80%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$39,159 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 1.8ct lab-grown cushion diamond

This 1.8ct lab-grown cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436045153 or 436045153. Listed at 6 retailers as of October 29, 2026, with prices from HK$7,924 to HK$39,159, a HK$31,235 spread on the same certified stone. MOH London lists it at HK$39,159. 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

1.80
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045153
Dimensions7.61 × 7.29 × 4.55 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.61 mm7.29 mm1.80 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436045153
Side View
Table 64.0%Crown 36.7°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 62.4%

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$39,159 HKD|Low: HK$7,924 HKD|High: HK$39,418 HKD|Avg: HK$19,542 HKD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2HK$7,924 HKD
Retailer 5HK$11,698 HKD
Retailer 4HK$12,122 HKD
Retailer 6HK$13,455 HKD
Retailer 7HK$16,743 HKD
Retailer 3HK$19,175 HKD
Retailer 8HK$34,715 HKD
MOH LondonHK$39,159 HKD

12 data points across 8 retailers

6 retailersHK$7,924 HKD to HK$39,159 HKD

A
Cheapest Retailer
-
HK$7,924 HKD
$1,010 USD
A
Retailer 2
-
HK$11,698 HKD
$1,491 USD
View
Final sale: no returns
Retailer 3
-
HK$12,122 HKD
$1,545 USD
View
Price last confirmed 20 days ago
A
Retailer 4
-
HK$13,455 HKD
$1,715 USD
View
B+
Retailer 5
-
HK$19,175 HKD
$2,444 USD
View
Most Expensive
B
MOH London
LG436045153 · Oct 29
HK$39,159 HKD
£3,930 GBP
View
5 more retailers have this diamond
Prices start from HK$7,924 HKDSave up to HK$31,235 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
1.80ct Cushion
HK$7,924 HKD