Well, I have spent a minute trying to find your exact ring and it has proven to be very difficult. You are in possession of a fairly unique
specimen.
The most uncommon characteristic of your ring is that the face is all gold. Virtually all masonic rings I have been able to find have some sort of
coloring on the face. Additionally, while many masonic rings have symbols on the sides, an exact match to the symbols on the sides of your ring has
proven very difficult.
I have found two near matches.
This one, and
this one. On the first one I do not believe that the symbols on the sides
are identical to yours, and in the second one the scale and compass is silvered. Thousands of masonic rings are availible
here. I looked through hundreds trying to find yours, and I recommend that that is
where you start if you want to try to find an exact match.
I believe that your ring is solid 10 - 14 karat gold. The symbol on the front is the standard masonic scale and compass, and I believe that the
symbol on the sides is a known as a plumb and trowel.
Similar rings seem to retail for $300-500 USD. If you were to sell it - which I would recommend against - it would obviously sell for substantially
less than retail value.
Cool find though!