The necklaces are all handmade from natural crystals and gemstones.
Necklaces have been an integral part of jewelry since the time of ancient civilizations and pre-date the invention of writing.
Necklaces are believed to be as old as 40,000 years, during the Stone Age. The oldest necklaces were made of purely natural materials - before weaving and the invention of string, durable vines or pieces of animal sinew left over from hunts were tied together and adorned with shells, bones or teeth or colourful skins of human prey animals, bird feathers, corals, carved pieces of wood, colorful seeds, stones or naturally occurring gems, or other beautiful or artful natural elements found nearby.
In the modern era, a variety of new metals are available for necklaces that earlier generations could not properly melt until high-temperature crucibles and blowtorches were developed, such as stainless steel and titanium; electroplating has enabled mass ownership of gold (or at least gold-veneer) jewelry.