Silver chain necklace with a green stone charm. Used item. - Model Name: NS2-3 - Color: Silver - Stone Color: Green NS mark silver necklace, adjustable design. 46cm Material unknown - Model Name: NS mark silver chain - Type: Necklace With green charm Stone name unknown. I think it's good for necklaces to wear when traveling, etc. The following is an explanation from the internet: "NS mark" was mainly the old quality assurance mark given by the Japan Fire Equipment Inspection Association to fire equipment (especially residential fire alarms) that met the technical standards, but it has been changed to "**Inspection Mark (検)**" since April 2014. Also, the "SN" engraving seen on gold products, etc., indicates "Nakagawa Soshingu Kogyo Co., Ltd." (mainly plated accessories) Thank you for viewing.