Mineral Guide

Natural crystal and glass beads compared with the title Natural Crystal vs Glass Beads: How to Tell the Difference
Natural Crystal vs Glass Beads: How to Tell the Difference
Learn how to compare natural crystal and glass beads by observing inclusions, bubbles, light behavior, variation, surface polish, and seller disclosure. Read more...
Crystal bracelets on limestone with the title How to Choose a Crystal Bracelet by Crystal Type
How to Choose a Crystal Bracelet by Crystal Type
Learn how to choose a crystal bracelet by crystal type, from clear quartz and rose quartz to amethyst, moonstone, smoky quartz, green stones, and black tourmaline. Read more...
Natural stone jewelry on limestone with the title How to Care for Natural Stone Jewelry
How to Care for Natural Stone Jewelry
Keep natural stone jewelry dry, clean it gently with a soft cloth, and store each piece separately. Avoid water, perfume, lotion, heat, harsh chemicals, and impact. Read more...
High-quality crystal bracelets on limestone with the title How to Tell If a Crystal Bracelet Looks Expensive
How to Tell If a Crystal Bracelet Looks Expensive
Learn what makes a crystal bracelet look expensive, from stone quality and bead polish to drill holes, proportion, color restraint, and finishing. Read more...
Moonstone bracelets with blue flash on limestone, titled Moonstone Bracelet Guide
Moonstone Bracelet Guide: Flash, Clarity, and Quality
Learn how to choose a moonstone bracelet by flash, adularescence, clarity, polish, bead consistency, and overall strand quality. Read more...
Crystal bracelet size guide comparing 6mm, 8mm, and 10mm natural stone bead bracelets
Crystal Bracelet Size Guide: 6mm vs 8mm vs 10mm
A practical guide to choosing between 6mm, 8mm, and 10mm crystal bracelets by wrist size, visual weight, comfort, stacking, and stone character. Read more...
Natural stone beaded bracelets on limestone with the title Why Beaded Jewelry Is Back
Why Beaded Jewelry Is Back: The Return of Stones You Can Feel
Why beaded jewelry is returning through natural stone, touch, weight, texture, and the quiet presence of bracelets made to be felt. Read more...
How to Choose Your First Investment-Worthy Crystal Bracelet title over curated natural stone bracelets on limestone
How to Choose Your First Investment-Worthy Crystal Bracelet
A SITU guide to choosing your first serious crystal bracelet by material quality, natural character, bead finish, durability, size, and wearability. Read more...
Not Every Black Crystal Is Obsidian title over black obsidian, black tourmaline, onyx, hematite, and dark mineral bracelets on limestone
Not Every Black Crystal Is Obsidian
A SITU material guide to black stones: how to tell obsidian, black tourmaline, onyx, hematite, shungite, and jet apart by structure and surface. Read more...
Six summer mineral bracelets in turquoise, citrine, aquamarine, peridot, carnelian, and moonstone on pale limestone
The Six Stones Defining Summer 2026
A SITU guide to the six stones that feel most relevant for summer 2026: turquoise, aquamarine, citrine, carnelian, peridot, and moonstone. Read more...
Why no two mineral stones are the same — SITU Mineral Guide
Why No Two Stones Are the Same
The geology behind individual character — and why variation is the point. Inclusions, labradorescence, rutilated quartz, and what makes every stone a one-of-a-kind geological record. Read more...
What crystals are good for anxiety — SITU Mineral Guide
What Crystals Are Good for Anxiety?
The honest answer — and why it's more interesting than you'd expect. Science, psychology, and the SITU view on wearing mineral with intention. Read more...
Why people wear crystal jewelry — SITU Mineral Guide
Why Do People Wear Crystal Jewelry?
Not the spiritual answer. The human one. From ancient ritual to modern intention — the real reasons people reach for stone. Read more...
What Is Onyx? The Stone That Absorbs Light
What Is Onyx? The Stone That Absorbs Light
Quick Answer Onyx is a variety of chalcedony — microcrystalline quartz — characterized by flat, parallel banding. The solid black material sold as black onyx in jewelry is typically agate... Read more...
What Is Pearl? The Only Gem That Grows Inside a Living Thing
What Is Pearl? The Only Gem That Grows Inside a Living Thing
Quick Answer Pearl is not a mineral. It’s a biogenic gem — produced inside a living mollusk as a defensive response to an irritant. The mollusk coats the foreign object... Read more...
How to Store Stone Bracelets: Keeping Each Stone in Its Best Condition
How to Store Stone Bracelets: Keeping Each Stone in Its Best Condition
Quick Answer Store each stone bracelet separately — in individual soft pouches or compartments — so that harder stones don't scratch softer ones. Keep away from direct sunlight (amethyst fades;... Read more...
What Is Tourmaline? The Mineral That Comes in Every Color
What Is Tourmaline? The Mineral That Comes in Every Color
Quick Answer Tourmaline is a boron silicate mineral with the widest natural color range of any single mineral group — it occurs in red, pink, orange, yellow, green, blue, violet,... Read more...
What Is Prehnite? The Apple-Green Stone With Fog Inside
What Is Prehnite? The Apple-Green Stone With Fog Inside
Quick Answer Prehnite is a calcium aluminum phyllosilicate — Ca₂Al(AlSi₃O₁₀)(OH)₂ — with a distinctive pale apple-green to mint color and a semi-translucent, slightly foggy visual quality. Many specimens contain dark... Read more...
What Is Jade? The Two Minerals That Share One Name
What Is Jade? The Two Minerals That Share One Name
Quick Answer “Jade” is not a single mineral. It refers to two completely different minerals — nephrite (calcium magnesium iron silicate) and jadeite (sodium aluminum silicate) — that happen to... Read more...
Labradorite vs Tiger's Eye: Two Stones That Move Differently
Labradorite vs Tiger's Eye: Two Stones That Move Differently
Quick Answer Labradorite is a feldspar with a cold electric flash (labradorescence) — a structural optical effect that produces blue, green, or gold color from thin-film interference. Tiger's eye is... Read more...
What Is Garnet? The Mineral Family That Comes in Every Color
What Is Garnet? The Mineral Family That Comes in Every Color
Quick Answer Garnet is not a single mineral — it's a group of six related silicate minerals (almandine, pyrope, spessartine, grossular, andradite, uvarovite) that share the same cubic crystal structure... Read more...
What Is Carnelian? The Orange Chalcedony With Iron at Its Core
What Is Carnelian? The Orange Chalcedony With Iron at Its Core
Quick Answer Carnelian is chalcedony — a microcrystalline variety of quartz — colored by iron oxide, specifically hematite and goethite distributed through the stone's fine-grained crystal matrix. The orange color... Read more...
How to Clean Stone Bracelets: A Stone-by-Stone Guide
How to Clean Stone Bracelets: A Stone-by-Stone Guide
Quick Answer For most stone bracelets: wipe with a soft dry cloth after wearing, and occasionally clean with a slightly damp cloth and plain water. No soap, no ultrasonic cleaners,... Read more...
What Is Fluorite? The Mineral That Invented Fluorescence
What Is Fluorite? The Mineral That Invented Fluorescence
Quick Answer Fluorite is calcium fluoride — CaF₂ — a halide mineral, not a silicate. Its color bands form in alternating growth zones as different trace elements incorporate into the... Read more...
Amethyst vs Smoky Quartz: Same Mineral, Opposite Temperatures
Amethyst vs Smoky Quartz: Same Mineral, Opposite Temperatures
Quick Answer Amethyst and smoky quartz are both silicon dioxide — the same mineral, different color mechanisms. Amethyst's purple comes from iron and aluminum impurities altered by natural radiation; smoky... Read more...
What Is Lapis Lazuli? The Rock That Looks Like a Night Sky
What Is Lapis Lazuli? The Rock That Looks Like a Night Sky
Quick Answer Lapis lazuli is a metamorphic rock — not a mineral. It's composed primarily of lazurite (which gives the blue), pyrite (the gold flecks), and calcite (the white patches),... Read more...
What Is Sunstone? The Feldspar That Glitters From the Inside
What Is Sunstone? The Feldspar That Glitters From the Inside
Quick Answer Sunstone is a plagioclase or orthoclase feldspar containing tiny reflective platelets — usually copper or hematite — that are suspended inside the crystal. As light strikes these platelets... Read more...
How to Build a Stone Bracelet Collection: A Systematic Approach
How to Build a Stone Bracelet Collection: A Systematic Approach
Quick Answer Start with one stone that you'll actually wear. Wear it long enough to understand what it does and doesn't give you — then choose the next stone to... Read more...
What Is Rhodonite? The Pink Stone With Black Veins
What Is Rhodonite? The Pink Stone With Black Veins
Quick Answer Rhodonite is a manganese inosilicate mineral — MnSiO₃ — whose pink color comes from manganese in its crystal structure. The black veins characteristic of most rhodonite are manganese... Read more...
Smoky Quartz vs Black Tourmaline: Two Dark Stones, Two Completely Different Experiences
Smoky Quartz vs Black Tourmaline: Two Dark Stones, Two Completely Different Experiences
Quick Answer Smoky quartz is transparent brown-grey quartz — it lets light through and has visible depth. Black tourmaline is opaque black mineral — it absorbs light and presents a... Read more...
Stone Bracelet Size Guide: How to Measure and Choose the Right Fit
Stone Bracelet Size Guide: How to Measure and Choose the Right Fit
Quick Answer Measure your wrist circumference with a soft tape measure or strip of paper. Add 1–2cm for a standard fit — snug enough to stay in place, loose enough... Read more...
What Is Black Tourmaline? The Most Practical of the Dark Stones
What Is Black Tourmaline? The Most Practical of the Dark Stones
Quick Answer Black tourmaline — mineralogically called schorl — is a sodium iron boron silicate with one of the most complex chemical structures of any common gemstone mineral. At Mohs... Read more...
Natural Stone vs Synthetic Crystal: What You're Actually Buying
Natural Stone vs Synthetic Crystal: What You're Actually Buying
Quick Answer "Real" and "fake" are imprecise terms that obscure more than they reveal. Stone bracelets fall into four categories: natural (mined from the earth), synthetic (same chemistry as the... Read more...
What Is Citrine? The Yellow Quartz That's Rarely What It Seems
What Is Citrine? The Yellow Quartz That's Rarely What It Seems
Quick Answer Citrine is yellow quartz. Natural citrine gets its color from ferric iron impurities in the crystal lattice. Most commercial citrine, however, is heat-treated amethyst or smoky quartz —... Read more...
What Is Malachite? The Copper Mineral With Banded Green
What Is Malachite? The Copper Mineral With Banded Green
Quick Answer Malachite is a copper carbonate hydroxide mineral — Cu₂(CO₃)(OH)₂ — formed where copper ore deposits have been altered by water and carbon dioxide. Its vivid green comes entirely... Read more...
How to Choose a Stone Bracelet as a Gift: A Practical Guide
How to Choose a Stone Bracelet as a Gift: A Practical Guide
Quick Answer Choosing a stone bracelet as a gift comes down to two things: the stone (which reflects something true about the recipient) and the size (which determines whether it... Read more...
What Is Hematite? The Iron Stone That Feels Like Metal
What Is Hematite? The Iron Stone That Feels Like Metal
Quick Answer Hematite is iron oxide — Fe₂O₃ — one of the most abundant iron minerals on Earth and a major iron ore. As a bracelet stone, it's notable for... Read more...
Amethyst vs Rose Quartz: Same Family, Completely Different Stones
Amethyst vs Rose Quartz: Same Family, Completely Different Stones
Quick Answer Amethyst is transparent purple quartz colored by iron impurities and radiation. Rose quartz is milky pink quartz colored by microscopic mineral fiber inclusions. Amethyst is glassy and see-through;... Read more...
What Is Green Aventurine? The Quartz With a Sparkle Inside
What Is Green Aventurine? The Quartz With a Sparkle Inside
Quick Answer Green aventurine is a variety of quartz containing small platelets of fuchsite — a chromium-rich mica — that produce a sparkling optical effect called aventurescence. The green color... Read more...
What Is Aquamarine? The Blue-Green Beryl of Deep Water
What Is Aquamarine? The Blue-Green Beryl of Deep Water
Quick Answer Aquamarine is a variety of beryl — the mineral family that also includes emerald and morganite — colored blue-green by iron impurities. Its color ranges from pale sky... Read more...
Labradorite vs Moonstone: Two Stones That Glow Differently
Labradorite vs Moonstone: Two Stones That Glow Differently
Quick Answer Labradorite flashes — its light is directional, sharp, and appears only at certain angles. Moonstone glows — its light is diffused, soft, and always present. Labradorite has a... Read more...
How to Care for a Natural Stone Bracelet: A Practical Guide
How to Care for a Natural Stone Bracelet: A Practical Guide
Quick Answer A stone bracelet has two components with different lifespans: the stone (which lasts indefinitely with basic care) and the elastic cord (which degrades over time regardless). Clean the... Read more...
What Is Moss Agate? The Stone That Grows a Landscape Inside
What Is Moss Agate? The Stone That Grows a Landscape Inside
Quick Answer Moss agate is a translucent chalcedony quartz containing green, brown, or black mineral inclusions — typically hornblende or chlorite — that form branching, dendritic patterns resembling moss, ferns,... Read more...
What Is Smoky Quartz? The Dark Transparency of Deep Earth
What Is Smoky Quartz? The Dark Transparency of Deep Earth
Quick Answer Smoky quartz is quartz — the same mineral as clear quartz, amethyst, and rose quartz — colored grey-brown by aluminum impurities that have been altered by natural radiation.... Read more...
What Stone Is Right for Me? Three Questions That Actually Help
What Stone Is Right for Me? Three Questions That Actually Help
Quick Answer The right stone is the one you'll actually notice on your wrist. That means choosing by what you want to look at (optical behavior), how much weight you... Read more...
Obsidian vs Black Tourmaline: How to Choose Between the Two Dark Stones
Obsidian vs Black Tourmaline: How to Choose Between the Two Dark Stones
Quick Answer Obsidian is volcanic glass — mirror-gloss surface, reflects light back at you. Black tourmaline is a crystalline mineral — semi-lustrous, absorbs light, holds it. Obsidian is visually confrontational;... Read more...
What Is Rose Quartz? The Pink Stone With an Unexplained Color
What Is Rose Quartz? The Pink Stone With an Unexplained Color
Quick Answer Rose quartz is pink quartz, but its color mechanism is unusual. Unlike amethyst (iron + radiation) or smoky quartz (aluminum + radiation), rose quartz gets its color primarily... Read more...
What Is Amethyst? The Purple Quartz and What Makes Its Color Real
What Is Amethyst? The Purple Quartz and What Makes Its Color Real
Quick Answer Amethyst is quartz — the same mineral as clear quartz, smoky quartz, and rose quartz — colored purple by iron impurities that have been altered by natural gamma... Read more...
What Is Obsidian? The Volcanic Glass That Reflects Everything
What Is Obsidian? The Volcanic Glass That Reflects Everything
Quick Answer Obsidian is not a mineral. It's a naturally occurring volcanic glass — formed when silica-rich lava cools so rapidly that atoms don't have time to arrange themselves into... Read more...
What Is Moonstone? The Stone That Glows From Within
What Is Moonstone? The Stone That Glows From Within
Quick Answer Moonstone is an orthoclase feldspar mineral known for adularescence — a soft, billowing glow that appears to float beneath the stone's surface. Unlike labradorite's sharp directional flash, moonstone's... Read more...