Celestite

Celestite From Sakoany Distct Beony Madagascar 

Celestite (also known as celestine) from the Sakoany deposit in the Mitsinjo District of the Boeny Region, Madagascar, is world-renowned. These magnificent, sky-blue mineral specimens—mined near the northwest coast since the 1960s—are prized by collectors for their incredible glassy luster, transparency, and sharp, euhedral crystal formations. 

Key Characteristics of Sakoany Celestite

• Color: Famous for a rich, "heavenly" or sky-blue hue that can range from pale icy blue to deep translucent, glassy blue.
• Crystal Habit: Typically forms blocky, bladed, or elongated and tapered crystals growing inside hollow limestone geodes.
• Mineral Composition: Native strontium sulfate (SrSO₄). It is a relatively soft mineral, rating only 3 to 3.5 on the Mohs hardness scale, making it strictly a display specimen rather than one suitable for daily-wear jewelry.
• Matrix: The crystals often form on a naturally contrasting white or earthy limestone matrix, highlighting the vibrant blue coloration. 

Sakoany Deposit Details

• Location: Katsepy Commune, Mitsinjo District, Boeny Region, Mahajanga Province. 
• Mining & Culture: Artisanal mining has been a crucial economic activity for the local Sakalava population since 1967. The extraction process is deeply intertwined with local religious traditions, with designated resting days where no mining is permitted. 
• Rarity: While plentiful historically, finding undamaged, high-quality specimens with perfectly terminated crystals remains highly sought-after.