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Cushion|Lab Grown|IGI

1.59ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG455010380

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG455010380

Diamond specifications and retailer prices

From HK$3,146 HKD
$401 USD
As of October 29, 2026
Save HK$15,606 HKD (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$18,753 HKD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.59ct lab-grown cushion diamond

This 1.59ct 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 LG455010380 or 455010380. Listed at 9 retailers as of October 29, 2026, with prices from HK$3,146 to HK$18,753, a HK$15,606 spread on the same certified stone. Do Amore Diamonds lists it at HK$18,753. 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

1.59
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG455010380
Dimensions6.76 × 6.74 × 4.60 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa.
Top View
6.76 mm6.74 mm1.59 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG455010380
Side View
Table 60.0%Crown 35.3°Girdle: STK-VTKPavilion 40.8°Culet: NoneDepth 68.2%

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 29
Current: HK$18,753 HKD|Low: HK$3,146 HKD|High: HK$18,753 HKD|Avg: HK$7,739 HKD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4HK$3,146 HKD
Retailer 5HK$4,339 HKD
Retailer 2HK$5,120 HKD
Retailer 7HK$6,978 HKD
Retailer 8HK$9,384 HKD
Retailer 6HK$10,577 HKD
Retailer 3HK$11,639 HKD
Do Amore DiamondsHK$18,753 HKD

35 data points across 8 retailers

9 retailersHK$3,146 HKD to HK$18,753 HKD

A
Cheapest Retailer
-
HK$3,146 HKD
$401 USD
A
Retailer 2
-
HK$3,845 HKD
$490 USD
View
B+
Retailer 3
-
HK$4,339 HKD
$553 USD
View
B+
Retailer 4
-
HK$5,120 HKD
£514 GBP
View
B+
Retailer 5
-
HK$6,978 HKD
$889 USD
View
B
Retailer 6
-
HK$9,384 HKD
$1,196 USD
View
B
Retailer 7
-
HK$10,577 HKD
$1,348 USD
View
B
Retailer 8
-
HK$11,639 HKD
£1,168 GBP
View
Most Expensive
B
Do Amore Diamonds
27-363F4265B · Oct 29
HK$18,753 HKD
$2,390 USD
View
8 more retailers have this diamond
Prices start from HK$3,146 HKDSave up to HK$15,606 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
1.59ct Cushion
HK$3,146 HKD