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Cushion|Lab Grown|IGI

1.64ct E SI1 Cushion Lab Grown Diamond

GD • E/SI1 • IGI LG611385678

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG611385678

Diamond specifications and retailer prices

From HK$1,859 HKD
$237 USD
As of October 28, 2026
Save HK$13,910 HKD (88%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$15,770 HKD at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

About this 1.64ct lab-grown cushion diamond

This 1.64ct 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 standard cut grade and certified by IGI LG611385678 or 611385678. Listed at 7 retailers as of October 27, 2026, with prices from HK$1,859 to HK$15,770, a HK$13,910 spread on the same certified stone. Do Amore Diamonds lists it at HK$15,770. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.64
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG611385678
Dimensions6.90 × 6.85 × 4.54 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.90 mm6.85 mm1.64 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG611385678
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 66.3%

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$15,770 HKD|Low: HK$1,177 HKD|High: HK$15,927 HKD|Avg: HK$6,570 HKD|+6.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 27, 2026
Retailer 7HK$1,859 HKD
Retailer 2HK$2,886 HKD
Retailer 5HK$3,499 HKD
Retailer 10HK$3,657 HKD
Retailer 8HK$4,299 HKD
Retailer 11HK$4,386 HKD
Retailer 3HK$5,699 HKD
Retailer 4HK$9,017 HKD
Retailer 6HK$10,042 HKD
Retailer 9HK$11,298 HKD
Do Amore DiamondsHK$15,770 HKD

30 data points across 11 retailers

7 retailersHK$1,859 HKD to HK$15,770 HKD

A
Cheapest Retailer
-
HK$1,859 HKD
$237 USD
Final sale: no returns
A
Retailer 2
-
HK$2,886 HKD
£290 GBP
View
B
Retailer 3
-
HK$3,499 HKD
$446 USD
View
B
Retailer 4
-
HK$9,017 HKD
£905 GBP
View
B
Retailer 5
-
HK$10,042 HKD
$1,280 USD
View
B
Retailer 6
-
HK$11,298 HKD
$1,440 USD
View
Most Expensive
C
Do Amore Diamonds
27-974BF901B · Oct 27
HK$15,770 HKD
$2,010 USD
View
6 more retailers have this diamond
Prices start from HK$1,859 HKDSave up to HK$13,910 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
1.64ct Cushion
HK$1,859 HKD