ROGER LUCAS Canadian Cubist Geometric Ring from the 1970's, weighing 25.75 grams and crafted in 18K yellow gold with white gold accents and cubism patterns. Features 1 cubic-cut natural blue lapis lazuli (approximately 15 carats, 15x15x15mm) in center with 20 European round diamonds (approximately 0.40 carats, G/H color, VS/SI clarity) in flush settings, size 6.5 (resizable), measuring 24mm x 21mm with 17mm rise. Hallmarked "18KT" with palm-leaf maker's mark, showcasing exceptional sculptural craftsmanship and rare Canadian designer heritage for discerning collectors. Very good conditions. All our diamonds and colored gemstones are naturally earth-mined. Any synthetic (lab-grown) stones will be clearly indicated in the description. Upon Request, Auction House may provide Ring resizing or/and appraisal. This will carry an additional cost. Appraisals are made by our in house GIA certified Gemologist.