8mm light blue Celestial crystals are used in this 18" long necklace with the crystals joined together into a silver-plated diamond connector in the center front of the necklace.  From the connector hangs the pendant of one dark blue 10mm crystal with another of the light blue Celestrial crystals. 
 
All metal used is hypoallergenic, nickel-free, and is sterling silver, silver or gold-plated, or stainless steel unless noted otherwise. Every item is handcrafted, custom-made, nothing mass-produced.