Could someone lead me in the right direction for some good information on Amber?

I just love it, and I am seeing colors of Amber that I have never seen before, like the lemon color.......?

I also recently purchased this pendant on Ebay...150192122035

I probably paid too much, I bought @ the "buy it now price", but it was only $6. higher than the opening bid.

I really wanted it, obviously........ :)

Can anyone explain to me how this was done?

Carved from the back, to make the stripes & other details?

Any imput would help me.

I plan to incorporate this piece into something nice, hopefully w/ more cherry Amber if possible.

Thanks so much and I really enjoy this forum!

Susan