NWOT Tridacna Bracelet or necklace

New without tag. Genuine tridacna. Vintage style.Package will come with a additional thread for your diy when it doesn't fit your size perfectly.Tridacna is a rare organic gemstone,only the glossy and delicate textured calm shell can be chosen to make tridacna jewelry.  Tridacna shell has healing properties.It is regarded as a powerful device to aid health care, boost metabolism, anti-aging and prevents osteoporosis, calm and soothe the nerves,help sentiment, remove annoyance.