Large Unusual Pair of Vintage Designer Amethyst And 9K Gold Earrings By GS - London The beautiful amethyst gemstones are set into a wonderfully designed 9k gold setting. They weigh 4.1 grams and measure approx 3.2 cm in length. They are fully hallmarked on the stems with the makers mark "Gs", the London import mark, 375 and the date letter "Q" for 1990. They are in excellent condition with one replacement butterfly. All jewellery is cleaned and sterilised.