For sale here is a rare and SUPERB vintage 1970s handmade sterling silver and rock crystal quartz sculptural modernist hinged bangle bracelet designed by Mirjam Salminen for Kaunis Koru of Finland. Kaunis Koru was founded in 1956 by Martta Ritvanen, and launched the careers of many talented designers including Bjorn Weckstrom, Mirjam Salminen, and Olavi Wehmersuo. An outstanding example of her design work, and not an easy item to find! Composed of a raised square platform centering a large square-cut faceted prong-set rock crystal quartz above a circular opening below which is the simple sculptural hinged band of the bracelet. Measures 1-1/2" square at top, the band is 1" wide, and interior circumference is 6-1/2". Weighs 72.3 grams total. Marked as shown with maker mark for Kaunis Koru, Finnish national silver mark, "925" for sterling silver, and date letter for 1976. Excellent vintage condition with just fine light wear as shown - please view the photos, read the description, and ask all questions prior to purchase. I am open to reasonable offers from serious buyers.