Celtic Triskele Druidic .925 Sterling Silver Ring. Gorgeous Triple Goddess Triscele Trinity Ring in .925 Sterling Silver with genuine Black Onyx gemstone. Handcrafted in Sterling Silver in the USA. This item ships in 3 - 4 days. The triskele is a common motif in ancient Celtic design throughout Northern Europe and is associated with the Isle of Man where the ancient College of Druids was centered. The emphasis is on the numeral three which for the Celts symbolized the principles of creation.