CalderCrystals

24/06/2026

Rare Vivianite Crystal on Matrix from Brazil - Deep Blue-Green Prismatic Blades

Now available on our website CalderCrystals.com and Etsy shop CalderCrystals

Locality: Cabeça do Cachorro claim, São Gabriel da Cachoeira, Amazonas, Brazil

exceptional, collector-grade specimens of natural Vivianite from the remote São Gabriel da Cachoeira region in Amazonas, Brazil. Known to mineralogists for producing some of the world’s finest modern Vivianite, they feature high-luster, prismatic blades showcasing the mineral's classic dichroic shifts from a rich bottle-green to a deep indigo-blue depending on the light angle.
The sharp, elongated crystal structures stand in beautiful, dramatic contrast against a rugged, earthy, iron-rich matrix. This is a must-have, display-ready investment piece for serious mineral collectors, aesthetic enthusiasts, or high-end interior curation.

15/06/2026

Seraphinite, a rare mineral found exclusively in the Lake Baikal region of Siberia, Russia. It gets its name from the Seraphim—the highest order of angels—because of the glowing, silvery-green chlorite fibers that look exactly like delicate wings catching the light.
Looking at these natural chatoyant patterns is like staring into a frozen, enchanted forest. 🌲💚

13/06/2026

Absolutely mesmerising crystal growth on these specimens! Creedite is a rare calcium aluminium sulfate fluorohydroxide mineral, but it’s the intense, fiery orange coloration from this specific Mexican locality that truly steals the show.

​Look closely at those sharply formed, prismatic crystal clusters and the incredible, gemmy luster. A standout addition to any mineral collection.

08/06/2026

Here’s a closer look at different pieces from the historic Greenlaws Mine in St John's Chapel, County Durham. From the intense deep purples, to beautifully pale, glassy purple cubes with intricate, smoky color zoning.
The razor-sharp geometry and fantastic clarity perfectly highlight the unique character of North Pennines minerals. Classic British fluorite at its finest! ✨
Do you prefer the deep, intense purples or the softer, zoned pastel tones? Let us know below!

07/06/2026

Under normal light, this is a beautiful, classic smoky quartz crystal from the famous Erongo Mountain in Namibia. But hit it with a shortwave UV light, and the coating of hyalite opal absolutely erupts into this electric, radioactive-green fluorescence!
The glow is caused by trace amounts of uranyl ions trapped within the silica structure of the opal as it formed. It never gets old seeing that contrast.
🌍 Locality: Erongo Mountain, Erongo Region, Namibia
💎 Minerals: Hyalite Opal on Smoky Quartz

01/06/2026

Watch this incredible raw Alexandrite specimen from Brazil completely shift from a vibrant, deep green under daylight to a rich, glowing raspberry red under incandescent light!

Alexandrite is famously known as 'emerald by day, ruby by night,' and this new batch does not disappoint. Perfect for collectors who love high-quality, dramatic color-change minerals.

Each piece has been individually listed with detailed photos on our website and Etsy shop. Excellent additions to any serious mineral or gemstone collection.

🛒 Shop link in bio.

29/05/2026

26/05/2026

What you are looking at in this video is a classic mineralogical "identity theft" called a pseudomorph (literally meaning "false form").
These incredible clusters from the famous Daoping Mine in China started their lives as bright hexagonal prisms of Pyromorphite. Over millennia, chemical-rich fluids slowly washed over the crystals, replacing the original chemistry with Plumbogummite—all while preserving the exact original crystal shape.
In some of these pieces, you can still catch glimpses of the vibrant green or yellow pyromorphite peeking out from beneath a sky-blue coat of plumbogummite! It’s like a fossil, but made entirely of minerals.
Drop a 💎 if you love unique geology anomalies like this!

Available now in our latest shop update. DM for details or check out the link in our bio to claim one for your collection.

23/05/2026

Fresh from the Daoping Mine! 💎✨ We’ve just listed some incredible, vibrant green Pyromorphite specimens on our website and Etsy shop. Known for their iconic apple-green to lime-green hues and beautiful crystal habits, these classic Daoping pieces are an absolute must-have for any serious mineral collector.
Head over to the link in our bio to browse the new arrivals and find the perfect centerpiece for your collection!

18/05/2026

We’re bringing you the ultimate pink palette today! We are obsessed with the soft, heart-healing energy of Peruvian Pink Opal, and we love seeing it in all its forms.
Whether you love the rugged, natural magic of raw mineral specimens or the polished, creative possibilities of high-quality gemstone beads, we’ve got you covered.
🌸 – Sourcing breathtaking, raw Peruvian Pink Opal specimens to bring peaceful vibes and natural beauty into your space.
📿 – Supplying premium Pink Opal beads to elevate your jewelry designs and jewelry-making projects.
Which side are you on? Let us know in the comments! 👇
Where to shop:
🛍️ Snag the raw specimens at CalderCrystals.com
💎 Grab the craft beads at OrientalDirect.co.uk