Hi April thank you for writing in with the following question:
"I have my Great Grandfather's Ruby Freemasons ring. It is approximately 50 - 75 years old, set in 10K white gold. Any ideas on the value. It's in wonderful condition and the Freemason's symbol is clearly visible in the ruby. Thank you"
We do not do valuations on Antique Jewelry Investor. You might like to try What It's Worth 2 You they do online valuations and their prices are quite reasonable.