The sparkling part is set in sterling silver; the chain is 14k gold-filled.
The wavy line is about 0.9 mm wide.
Materials & care
Metals
14k gold-filled
A thick layer of real 14k gold bonded over a core metal. It looks and wears like gold and lasts for years with care.
Sterling silver
Solid .925 silver all the way through.
Gold chain + silver sparkle
On the gold chains, the sparkling part (the wave or the wavy line) is set in sterling silver, because tiny stones are set in silver. The chain itself is gold-filled.
Stones
Clear stones
Cubic zirconia (CZ): a lab-made crystal that sparkles like diamond.
Sky blue stones
Light blue CZ.
Clear-to-blue stones
Clear stones that fade into sky blue along the piece ("Mista").
Lab-grown diamonds
Real diamonds, grown in a lab instead of mined.
Plain (no stones)
Smooth, polished metal.
Pavé
A jeweller’s word for small stones set close together.
Put jewelry on after perfume and lotion. Take it off to swim or shower. Wipe it with a soft dry cloth, and keep each piece separate so chains don't tangle.