Hello! Thank you for viewing my listing m(_ _)m Please read the self-introduction m(_ _)m ■ Item: Smoky Quartz □ Inner Diameter: Unknown ■ Origin: Unknown □ Purchase Date: Over 8 years ago ■ Appraisal: None Remarks: This is a smoky quartz bangle with a deep black color. If you are looking for one, please consider it ^^ Since I do not appraise each individual natural stone, the authenticity is a matter of trust. I have purchased items after confirming with the seller, but please refrain from purchasing if you have any concerns m(*_ _)m Thank you very much m(_ _)m