Vintage Signed Miracle Celtic Knot Brooch Pin Pendant Turquoise? Lapis?

This vintage brooch pin pendant by Miracle is a beautiful piece of jewelry with a Celtic knot design. The main stone is made of glass and is in the color turquoise, while the secondary stone is made of lapis? The brooch is signed and was made in the United Kingdom. The metal used in this piece is unknown, but it is said to be silver in color. The brooch is round in shape and would make a great addition to any vintage jewelry collection. Unsure if stones are real or not since not marked on card.

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