Take it to a jeweler. They can clean jewelry much better than you can at home. Any type of porous stone can get stains like this, such as opals, emeralds, etc, and they need cleaned and oiled periodically.
Hope this helps!
at home you can clean them by using soft cloth dipped in any oil( olive oil or cod-liver oil are best)
keep it away from dust and other hard stones.
polish it regularly with oil.
Agate can be found in several colours - white to dark grey, pale to mid blue, pale orange to vivid red, black. Agate is a form of silica with a micro-crystalline structure.
Agate can come in a variety of colors and patterns, including white, grey, blue, red, and brown. These colors often form distinctive bands or streaks within the stone, creating unique and beautiful patterns.
Blue ice agate can be found in Utah, California, and Oregon.
Crackled fire agate in French is called "agate de feu craquelée," and crab fire agate in French is called "agate de feu crabe."
A ROCK SHOP that sells minerals and crystals will often have agate in different forms,. One of the best in NYC is called ROCK STAR CRYSTALS in Manhattan. They have more AGATE in a variety of forms than any other store run NYC, including Agate Geodes, Agate Bookends, Agate Slices in various sizes, Agate Pyramids and Spheres, Agate Massage Wands, Agate Jewelry, and even Agate Windchimes. You might also find agate bookends and agate coasters at a home furnishing store, but it's uncommon.
Agate minerals can come in a variety of colors, including white, gray, blue, green, pink, and brown. They often exhibit banded patterns with different colors layered together.
Agate geodes can come in a variety of colors, including white, gray, blue, purple, pink, and black. These colors can be solid or patterned in bands or swirls, creating unique and beautiful natural designs.
Moss Agate and Turritella Agate
Agate is a form of silicon dioxide.
Mariano Agate was born in 1939.
Katrina Agate is 4' 3".
May Agate died in 1960.