Black mourning brooch Victorian vintage very old oval

Beautiful black glass or onyx, this black mourning brooch is stunning it's set in a bronze or Russian gold setting with little lace looking filigree around the stone, This was from an estate find, I don't clean any of my vintage estate jewelry, this needs cleaned especially around the edges where the stone meets the setting, there is one tint tiny chip you can see it in a picture, it's next to the edge so it's hidden VERY well. I almost didn't notice it. The back has a little discoloration and the pin is slightly bent, this still works and is totally wearable and stunning! I'm not sure of it's age it looks very Victorian I'm sure it's a old vintage piece. The way the stone is cut in triangle cut makes it really shine and sparkle. 1.5" by 1.25" wide. Excellent condition other than the small chip. listing vintage and new jewelry daily, bundle and save, reasonable offers welcome.