Necklace

Design:
Floral/Star Motif: The pendant and earrings are designed in the shape of a flower or a stylized star, with petals or points radiating outwards. 
Central Stone: Each piece features a prominent cabochon-cut blue stone at its center. 
Accent Stones: Smaller, clear stones, likely zircons or similar sparkling gems, encrust the petals or points of the design, adding brilliance. 
Pendant and Earrings: The set includes a pendant on a chain and matching dangle earrings. 
Finishing:
Polished Finish:
The metal components, likely sterling silver, have a polished finish, providing a smooth and reflective surface that enhances the shine of the metal and stones. 
Rhodium Plating:
To prevent tarnishing and enhance durability and shine, the sterling silver is likely rhodium-plated, giving it a bright, white appearance. 
Material:Metal:
The metal is identified as sterling silver, possibly with a platinum or rhodium overlay for enhanced durability and luster. 
Central Stone:
The vibrant blue central stone is suggested to be either Australian opal (possibly a doublet to enhance color) or Sleeping Beauty turquoise, known for its distinct blue hue. 
Accent Stones:
The surrounding clear stones are referred to as natural zircons or similar sparkling gems.