Hi,

Yes, shiny object due to the reflectness are more dificult to track. Also a good object should have enough distinc features to be able to track it. In this case tracking the object seems to be difficult however I encourage you to try it out. In regards to best practices we have 2 articles going over them for 3d models and optimizing tracking.

https://library.vuforia.com/articles/Solution/model-targets-supported-objects.html

https://library.vuforia.com/features/objects/model-targets/tracking-modes.html

Also I believe the size of the object might work with the Object Tracker: https://library.vuforia.com/features/objects/object-reco.html it it worth exploring.

Hope this helps.

Vuforia Engine Support