Stone Encyclopedia
Natural stones with the color and character only raw stone can show — presented alongside the pieces TROZO makes from them.
Opal
Light and water woven into living color — October’s birthstone, the gem that holds a rainbow.
Fluorite
Purple, blue, green, gold — color layered into a story, the way only raw stone tells it.
Quartz
Clarity and the six-sided crystal. April’s birthstone — the stone the Earth grew most abundantly.
Amethyst
Purple born from a color center. February’s birthstone — a natural stone of quiet nobility.
Rose Quartz
The pink dedicated to Aphrodite — a generous stone, symbol of love and beauty.
Moonstone
A blue-white sheen that holds moonlight. June’s birthstone — a stone of mystery.
Labradorite
A stone that changes face with the angle of view — the play of color called labradorescence.
Aquamarine
A blue like seawater held in stone. March’s birthstone, a beryl-family gem.
Emerald
The green of beryl that captivated Cleopatra. May’s birthstone, a stone that holds a “jardin”.
Ruby
King of gems, the red of pigeon’s blood. July’s birthstone, a corundum-family stone.
Sapphire
The royal blue of the British Crown. September’s birthstone, a corundum-family stone.
Topaz
The sunlight of imperial topaz. November’s birthstone, a stone of many colors.
Citrine
The sun stone, the merchant’s stone. November’s birthstone, a stone that calls prosperity.
Garnet
A deep red like pomegranate seeds. January’s birthstone, a stone of life.
Peridot
The sun stone that shines even in the dark. August’s birthstone, a young-grass green.
Spinel
The truth of the Black Prince’s Ruby — a modern August birthstone.
Morganite
The pink flower of the beryl family, named for J.P. Morgan — an April birthstone.
Turquoise
A gradation of blue and green. December’s birthstone, a guardian of travelers.
Tanzanite
A blue-violet found only in Tanzania. December’s birthstone, named by Tiffany.
Lapis Lazuli
A blue of 6,000 years, the source of ultramarine. December’s birthstone, one of humankind’s oldest stones.
Sphene
A “fire” beyond diamond — a July birthstone.
Zircon
The oldest mineral on Earth — a December birthstone.
Tourmaline
The stone of a hundred colors, the glow of Paraíba. October’s birthstone, a many-colored gem.
Iolite
The Viking compass — a March birthstone.
Malachite
Concentric bands of deep green, drawn by chemical oscillation.
Azurite
The same root as lapis lazuli — the blue mineral that colored medieval European painting.
Dioptase
An emerald green colored by copper — sharing the Si₆O₁₈ ring with beryl.
Rhodochrosite
Rose-colored banding, held sacred by the Inca.
Sunstone
A solar flash thrown by flakes of copper — the counterpart to moonstone.
Ametrine
Purple and gold within one crystal — found only at the Anahí mine in Bolivia.
Cavansite
A deep-blue rose drawn by vanadium, blooming in the geodes of Deccan basalt.
Pink Amethyst
A pale pink quartz variety, asleep in the evaporite geodes of Patagonia, Argentina.
Coral
A red the sea grew. March’s birthstone.
Pearl
The one organic gem a shellfish makes. June’s birthstone.
Staurolite
The fairy cross — a natural stone carved into a cross by nature.
Pyrite
A perfect cube nature makes — a raw mineral whose name means “fire”.