Black Eye Agate 4mm Round - 15-16 Inch Stone Type_Opalite who was a great admirer

who was a great admirer and collector of gemstones

Zachery-processed turquoise has similar gemological properties to untreated turquoise

check out The Identification of Zachery Treated Turquoise

Tourmaline occurs in nearly every color in the rainbow and its name derives from “turmali

It is composed of silicon dioxide

Black Eye Agate 4mm Round - 15-16 Inch Stone Type_Opalite who was a great admirerBlack Eye Agate is a variety of Sardonyx which has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of Carnelian. Sardonyx is sometimes treated to bring out its reddish tones. It is believed by some to improve memory and increase analytical skills.