This is a serious question, so please no jokes. Thank you.
I am a catholic and do not believe in that! I think it is wrong!
In Thailand or Singapore, the gold shop sells a gold container with a screw on cap. You can wear it with a gold chain. It can contain a little amount of your loves one ashes. The tube container is normally used by Buddhist to store in miniature script blessed by the monk or high priest. It cost around less than a hundred dollars or more depends on the weight of the gold.