Thank you for viewing. Item No. 07 ● Description ● Length: 40cm ● Black Spinel: Approximately 2.5mm ● Adjuster: 5cm ● Marukan (Ring): 6mm ● Material: SUS316L ● Inner Thread: 0.24mm wire finish Spinel is said to support self-realization, derived from the Latin word "Spina." Spinel is often confused with the corundum group, but energetically, it is a stone with wonderfully strong power, comparable to ruby and sapphire.