Hello All Back On My BS This Is The First Of My Beaded Series Thats Fancy, I Will Be Doing More Colours Styles Necklaces Etc So Stay Tuned Or Join My Mailing List I Am So Happy With How This Turned Out Originally I Wanted To Start With This Kind But Didnt Go That Way, The Black Is Onyx And The White Is A White Bead Nothing Fancy There, As The Black Bead Is Onyx Avoid Hard Or Abrasive Water As This Many Damage It Over Time. It Is An Elastic/Cord So It Has Some Give. Any Questions Throw a Dm My Way And I Will Get Back To You ASAP