Be Very Cool Friendship Bracelet in 18 carat gold vermeil on sterling silver by Astley Clarke Biography. This charming friendship bracelet features alternating faceted turquoise, apatite and amazonite beads intersected with gold vermeil with a 7 inch fine gold vermeil chain. Turqouise and apatite are believed to be stones that encourage peace and strength, calling the wearer to 'be cool' and be empowered.