In the world of fine gems, few stones remain truly under the radar for long. Cobalt spinel is one of them. While collectors and investors have long been familiar with the prestige of sapphire, ruby, and emerald (the Big Three), cobalt-bearing spinel is gaining quiet momentum as one of the most desirable, naturally occurring blue gems in today’s market. Its vivid, velvety blue color rivals that of fine Kashmir sapphires, but unlike most sapphire, cobalt spinel is untreated, rare, and often sourced from politically sensitive areas in extremely small quantities.
Sanctuary Blog / gemstone collecting
-
June 13, 2025
-
June 05, 2025
Jeremejevite: Exploring the Value, Properties and Metaphysics of One of Earth's Rarest Gemstones
Jeremejevite is one of the rarest minerals on Earth. In this blog post, I'll take you on a journey to explore Jeremejevite's physical properties, geological formation, and its role in personal transformation, stone medicine, and energetic work. You'll also learn its value on the market, how rarity affects price, and which locations the best specimens come from.
-
March 17, 2025
What Makes Benitoite a Rare and High Vibrational Cosmic Connector
Benitoite is a rare stone that even seasoned collectors may never encounter firsthand. Coveted by gemologists, mineral collectors, and energy healers who are in the know, benitoite occupies a unique position in the mineral kingdom: it is both an ultra-rare stone anomaly of the Earth and one that speaks to deeper domains of consciousness.
-
January 12, 2025
Kornerupine: A Rare Gemstone Bridging Worlds of Beauty and Power
Few gemstones evoke the sense of wonder and mystery as kornerupine, a rare and exquisite mineral that straddles the domains of gemological rarity and metaphysical potency. This is more than a rare gemstone - it is a bridge to a deeper understanding of yourself and the universe.