The Paraiso Necklace is made of a natural seed which is called Tagua and leather. 
It has an easy slide clasp and is very adjustable, so you can wear it long or short, it depends on the occasion or season.
Slide clasp is adjustable:
Longest: 30 inches
Shortest: up to you
Tagua is a wild fruit, which grows in tropical forests in Colombia under the canopy of other trees which provide it with shade. It is almost impossible to reproduce the conditions and type of soil in which is able to grow, therefore, all tagua is harvested from wild sources. Due to its plant-based origin and its physical similarity to ivory, Tagua is a sustainable substitute for items traditionally made from the tusks and teeth of elephants and whales. This seed is collected from the soil, has a dye process, and after two weeks of drying it is ready for drilling and assembling the jewels.
-Because this product is made from Natural and unique seeds it may present some texture variations.