I tried to find out what the marking on this means so that I could better describe for you what you are considering buying.  But the mark is 6RK (with the "R" printed backward.  I was able to get only limited information but I will share what little I have.  The backward R is probably the last letter of the Russian alphabet and the whole 6RK probably has something to do with amber.  That's it.  Sorry it could not have been better.
The part that may be amber measures about 1.5" x .5" x .5".
The whole clip, overall, is about 2 inches long.
I have shipping charges on all of my jewelry set so that you pay a reasonable shipping charge, according to the shipping method you choose, and then for every additional piece of jewelry you purchase from my shop and pay for all at the same time, you pay only an additional $.20 for shipping.  Save some money and get everything you want at one time, or get your friends together and get everything all of you want for very little shipping charges.