This is a Rutilated Quartz necklace by Akiko Senryu of Mykonos Kobo. The large quartz has a strong presence. It was previously available at select shops like H.P. France. I had it custom-made when I visited the workshop. It cost around ¥78,000. Ms. Senryu has since moved her focus from accessories to art, so this item is now difficult to obtain. Dimensions: 25 x 50mm (pendant top) Please forgive any errors due to amateur measurements. The case's hinge is broken, so I will ship the pendant only. *I cannot respond to inquiries. Color: Gold