TLC Vintage abalone shell minimalist necklace

TLC Vintage abalone shell minimalist necklace Quick list New vintage c. 1970s. Probably by Artistic Jewellery Canada and/or made in Mexico. Silver tone costume metal and chain Rectangular Pendant charm. Good weight Oval shaped inlay of abalone shell: muted shades of blue, green, aqua, silver grey, (gold or yellow?) Nice feeling curb chain Original tag on. Three different shapes, two tones of metal, many shades of abalone! Note: abalone seems to change colour as it reflects different lights. Note: a bit of tarnish or spots on top & bottom corner. I rubbed it with my fingers to see what it was and most of it came off! It’s been sealed for almost 50 years so it might just be old age. Matching earrings available on this page!