18k Yellow Gold / Rhodolite / Amethyst / 4mm x 22mm Available for immediate shipping in rhodolite size 7.5. The celestial collection, our largest collection of jewelry pieces today, tells a story about the cosmos; a journey through the heavens and through the history of art. The collection draws on Tony’s interests in artisan horology, early timekeeping, and the marvelous mechanisms of the Renaissance that combined art and science together. If time and astronomy were even more intimately connect History Of Art, Bespoke Engagement Ring, Art And Science, Stacked Bangles, Tourmaline Stone, The Heavens, House Gifts, Tourmaline Ring, The Cosmos