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Cushion|Lab Grown|IGI

1.80ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG587384143

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG587384143

Diamond specifications and retailer prices

From HK$2,173 HKD
$277 USD
As of October 28, 2026
Save HK$19,012 HKD (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$21,185 HKD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG587384143 or 587384143. Listed at 17 retailers as of October 28, 2026, with prices from HK$2,173 to HK$21,185, a HK$19,012 spread on the same certified stone. Do Amore Diamonds lists it at HK$21,185. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG587384143
Dimensions7.22 × 6.92 × 4.64 mm
L/W Ratio1.04
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
7.22 mm6.92 mm1.80 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG587384143
Side View
Table 62.0%Crown 35°Girdle: MED-THKPavilion 38.7°Culet: NoneDepth 67.1%

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 28
Current: HK$21,185 HKD|Low: HK$2,173 HKD|High: HK$21,185 HKD|Avg: HK$7,193 HKD|+13.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 5HK$2,173 HKD
Retailer 9HK$2,950 HKD
Retailer 7HK$3,923 HKD
Retailer 10HK$3,923 HKD
Retailer 2HK$4,185 HKD
Retailer 11HK$4,316 HKD
Retailer 6HK$5,841 HKD
Retailer 4HK$7,810 HKD
Retailer 3HK$9,628 HKD
Retailer 12HK$11,737 HKD
Retailer 13HK$12,002 HKD
Retailer 8HK$13,084 HKD
Do Amore DiamondsHK$21,185 HKD

41 data points across 13 retailers

17 retailersHK$2,173 HKD to HK$21,185 HKD

A
Cheapest Retailer
-
HK$2,173 HKD
$277 USD
Final sale: no returns
A
Retailer 2
-
HK$2,950 HKD
$376 USD
View
Retailer 3
-
HK$3,405 HKD
£342 GBP
View
Price last confirmed 37 days ago
A
Retailer 4
-
HK$3,923 HKD
$500 USD
View
A
Retailer 5
-
HK$3,923 HKD
$500 USD
View
A
Retailer 6
-
HK$4,185 HKD
£420 GBP
View
A
Retailer 7
-
HK$4,316 HKD
$550 USD
View
B+
Retailer 8
-
HK$5,841 HKD
£586 GBP
View
B+
Retailer 9
-
HK$7,810 HKD
$995 USD
View
Retailer 10
-
HK$8,547 HKD
$1,089 USD
View
Price last confirmed 63 days ago
B
Retailer 11
-
HK$9,088 HKD
CA$1,609 CAD
View
B
Retailer 12
-
HK$9,628 HKD
$1,227 USD
View
B
Retailer 13
-
HK$11,737 HKD
$1,496 USD
View
B
Retailer 14
-
HK$12,002 HKD
SGD 2,067 SGD
View
B
Retailer 15
-
HK$13,084 HKD
£1,313 GBP
View
Retailer 16
-
HK$18,282 HKD
$2,330 USD
View
Price last confirmed 28 days ago
Most Expensive
B
Do Amore Diamonds
27-70838E392 · Oct 29
HK$21,185 HKD
$2,700 USD
View
16 more retailers have this diamond
Prices start from HK$2,173 HKDSave up to HK$19,012 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$2,173 HKD