1970s Chinese carved bone necklace, pendant is possibly ivory

Chinese carved vintage necklace from 1970s, todays flea market find. The material is smooth and cold to touch, dense. It has nice old smell, too. I thought it is carved bone, imagine my surprise when I googled identical one pendant sold as ivory.
http://www.laurelridgegonzales.com/Jewelry/estate/chinese-hand-carved-vintage-ivory-pendant-on-bone-necklace

That would be probably my first ivory find. Without my loupe I am not able to determine if this is ivory, or not - is there some smell test?
The seller was funny, he sold me the necklace for 1 EUR saying he cannot wear it so what he can do with the necklace - I told him that in todays times he can wear everything - he did not seem to appreciate the suggestion! :D :D

I would be thankful for your opinion on this, as usual :)