Hallmarked 925 sterling silver marcasite amp blue topaz celtic style broocha beautifully crafted celtic style brooch made from sterling silver the centrpiece of the brooch is a round brilliant cut blue topaz gemstone surrounded by sterling silver celtic knots decorated in gleaming marcasite stonesthis brooch attaches using a standard brooch pinsky blue topaz informationstone shape cut roundstone size 600mmnumber of stones 1carat weight per stone 0909birthstone novemberzodiac sagit