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Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG591369468

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG591369468

Diamond specifications and retailer prices

From HK$1,545 HKD
$197 USD
As of October 28, 2026
Save HK$11,713 HKD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$13,258 HKD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.55ct lab-grown cushion diamond

This 1.55ct 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 LG591369468 or 591369468. Listed at 14 retailers as of October 28, 2026, with prices from HK$1,545 to HK$13,258, a HK$11,713 spread on the same certified stone. Do Amore Diamonds lists it at HK$13,258. 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

1.55
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591369468
Dimensions7.37 × 6.35 × 4.35 mm
L/W Ratio1.16
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
7.37 mm6.35 mm1.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591369468
Side View
Table 63.0%Crown 36.5°Girdle: THN-STKPavilion 39.4°Culet: NoneDepth 68.5%

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$3,114 HKD|Low: HK$1,545 HKD|High: HK$14,278 HKD|Avg: HK$5,805 HKD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 7HK$1,545 HKD
Retailer 9HK$2,306 HKD
Retailer 1HK$3,114 HKD
Retailer 3HK$3,425 HKD
Retailer 8HK$4,354 HKD
Retailer 5HK$7,090 HKD
Retailer 2HK$8,877 HKD
Retailer 6HK$10,120 HKD
Retailer 4HK$10,826 HKD

41 data points across 9 retailers

14 retailersHK$1,545 HKD to HK$13,258 HKD

A
Cheapest Retailer
-
HK$1,545 HKD
$197 USD
Final sale: no returns
B+
Retailer 2
-
HK$2,306 HKD
$294 USD
View
A
Retailer 3
-
HK$2,856 HKD
$364 USD
View
A
Retailer 4
-
HK$3,114 HKD
€378 EUR
View
A
Retailer 5
-
HK$3,425 HKD
£344 GBP
View
B+
Retailer 6
-
HK$4,354 HKD
$555 USD
View
B+
Retailer 7
-
HK$6,460 HKD
$823 USD
View
B+
Retailer 8
-
HK$7,090 HKD
$904 USD
View
B
Retailer 9
-
HK$8,877 HKD
£891 GBP
View
B
Retailer 10
-
HK$9,963 HKD
$1,270 USD
View
B
Retailer 11
-
HK$9,963 HKD
$1,270 USD
View
B
Retailer 12
-
HK$10,120 HKD
$1,290 USD
View
B
Retailer 13
-
HK$10,826 HKD
$1,380 USD
View
Most Expensive
B
Do Amore Diamonds
27-7C1DA9D49 · Oct 29
HK$13,258 HKD
$1,690 USD
View
13 more retailers have this diamond
Prices start from HK$1,545 HKDSave up to HK$11,713 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
1.55ct Cushion
HK$1,545 HKD