Moonrocy Women's Fashion Necklace.  Delicate pink opal flower pendant, with small micro pave clear CZ crystal on leaves.  Squared box link chain. These are usually a lobster clasp.  Short, about 17.75in, no mention of an extender.

Item Type: Necklaces
Fine or Fashion: Fashion
Brand Name: MOONROCY
Necklace Type: Pendant Necklaces
Gender: Women
Shape\pattern: Plant
Chain Type: Link Chain
Metals Type: Copper Alloy
Model Number: A1408
Pendant Size: 2.4cm
Material: Opal
Chain Length: 45cm