Vintage Silver Tone Women's Lab Created Gemstone Necklace

Vintage Silver Tone Women's Lab Created Gemstone Necklace. Necklace is vintage (pre-2004) pre-owned. Please see all photos for visible condition. Brand unknown - no noticeable marking. Approximately 15-16 inches long. The stones appear to be lab created but overall it looks well made type of fashion costume jewelry. Not sure what the stone would resemble gem-wise. I just like how unique it looks. Stand not included.