|
|
|
|
|
|
|
|
|
|
|
|
Discover what fossils are, how ammonites form, and why some shine with iridescent colors. Featuring specimens from Madagascar.
Read more
Discover the geometric bismuth made with heat, time and pure physics.
Read more
Not a meteorite, not a mineral: discover what moldavite really is and why none has formed in 15 million years.
Read more
Why amethyst is violet and opal shimmers: the colour of minerals, explained.
Read more
Learn to read a mineral by its outer shape: what crystal habit tells you about how, where and how fast each stone formed.
Read more
Pink, green, blue, black, watermelon... each color is the result of a different chemical composition. The same mineral, endless possibilities.
Read moreRockShop - CrystalShop in the heart of Barcelona
Minerals from all over the world for all over the world. More than 40 years in the purchase and sale of minerals, retail and wholesale.
From the center of Barcelona shipments to Spain and the rest of the world.
In the center of Barcelona, between Plaza Sant Jaime and Vía Layetana. Yellow Metro L4 (Jaume I est.).
In our physical store in the center of Barcelona we have much more variety than what is added on the web.
You can contact us without obligation at our email cmd@cristalljoia.com or whatsapp +34-670-61-16-63.
At Cristalljoia Barcelona we have a wide variety of minerals in a multitude of forms.
Do not hesitate to contact us if you have any questions or want us to show you the minerals that we have.
One of the most surprising properties of black tourmaline is its pyroelectricity, which means it generates electricity when heated.
Read more
In this video, we explain how to make a pendant with a sliding knot so you can wear your minerals.
Read more
In this video, Jessica explains to us how to make a bracelet with elastic thread and mineral beads.
Read moreWhy does amethyst have that deep purple color?
Amethyst's purple comes from trace iron impurities in the quartz lattice, altered by natural irradiation that creates color centers which absorb light and reflect violet.
What is that thing that gleams in some fossilized ammonites?
That gleam isn't true opal (which is amorphous silica), even though many people call it "opalized ammonite" for the visual resemblance. It's actually layered aragonite or calcite that diffracts light the same way opal does, but mineralogically they're completely different species.
Quartz and glass are both silicon dioxide, right? So why does one grow those sharp faces and the other doesnt?
Quartz grows slowly, so its atoms lock into an ordered lattice — the flat faces are that internal geometry showing on the surface. Glass cools too fast for the atoms to order themselves.
Looking for a mineral? Write us
670-61-16-63 cmd@cristalljoia.com In the heart of Barcelona and online