-It is the combination of Tourmaline and Clear Quartz. Tourmaline purifies ones own energies and protects from negativity, while Quartz amplifies energies focused through it. This combination a powerful shield-stone against all negativity.
How long is the chain that comes with it? How big are the pendants? - You can choose the necklace length by tapping on the dropdown list box that says "necklace length". The chain is stainless steel and would not tarnish on normal conditions.
- the pendant is about:
-heart: 14mm x 14mm
-cubic/key: 11mm x 16mm
-rectangle: 15mm x 20mm
What is the metal part that holds the pendant? -Stainless Steel
Are you using real crystals? -Yes. It is real crystals.