Vintage Gau Necklace Turquoise & Coral Mandala Pendant

So large in size and beautifully crafted, is this vintage Tibetan Mandala gau or ghau pendant necklace, set with vivid turquoise and coral gemstones 

The symbolic star shaped Buddhist amulet or pendant represents intersecting squares or “dorjes”, and is completely hand wrought.

It has a high dimensional or 3D design with hammered brass repousee design in back, and is set with genuine hand cut stones of bright blue turquoise, salmon colored coral, and four dark stone accents, possibly glass – bezel set into flower shapes and filigree scrollwork.

The pendant portion measures approximately 5&1/4 inches size, point to point, and is attached to a chain link necklace with early knobless spring ring clasp marked “MS” and which measures approximately 27&1/2 inches all around in total, and weighs 40.4 grams.