What does "free-form" mean?- Free-form pendants are also know as crazy cut or irregular cut pendants. There are no two exactly the same cut. Each pendant is unique with its own quirks and curves. What are the metaphysical properties of Opalite?-It is said in to help calm responses and stress, and avoid overreaction. It brings hope, enhances feminine energies, sensitivity, intuition, and psychic abilities. Is Opalite a birthstone?-Yes! It is the birthstone for October. How long is the chain that comes with it? How big are the pendants?- it is 45 cm or 17.5 inches. The chain is stainless steel and would not tarnish on normal conditions. - the pendant is around 0.5 inches. Around 10 to 12 mm. What is the metal part that holds the pendant?-it is made out of aluminum. I use aluminum to hand wrap all the pendants. Are you using real crystals?-Yes. It is real semi-precious crystals.