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⚲ Rock Identification

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31 posts

Pyrite in depth: crystal habit, and a real conservation problem

by CanyonCracker14 Novice · Posted Jul 12, 2026 · Active 4h ago

Rhodochrosite and rhodonite: similar names, similar color, different minerals

by GoldFinder12 Novice · Posted Jul 12, 2026 · Active 4h ago

Corundum: ruby, sapphire, and the second hardest natural mineral

by VeinQueen99 Novice · Posted Jul 12, 2026 · Active 4h ago

Amethyst and citrine: same mineral, different color, and a real trade secret

by CobaltScout46 Novice · Posted Jul 12, 2026 · Active 4h ago

Identifying quartz: the most common mineral you will find

by MineralHound86 Novice · Posted Jul 12, 2026 · Active 4h ago

Hematite and magnetite: both iron ores, only one is strongly magnetic

by CrystalKing27 Novice · Posted Jul 12, 2026 · Active 4h ago

Fluorite: the mineral that gave fluorescence its name

by CobaltSage48 Novice · Posted Jul 12, 2026 · Active 4h ago

Agate versus jasper: the translucency test

by GemQueen95 Novice · Posted Jul 12, 2026 · Active 4h ago

Beryl family: aquamarine, morganite, and emerald under one name

by BoulderDigger56 Novice · Posted Jul 12, 2026 · Active 4h ago

Garnet: more than one mineral hiding under one name

by CrystalKing26 Novice · Posted Jul 12, 2026 · Active 4h ago

Fossilized shark teeth: a beginner friendly, genuinely abundant fossil

by 506993 Novice · Posted Jul 12, 2026 · Active 4h ago

Opal: where the color actually comes from, and why it can crack

by ObsidianHawk11 Novice · Posted Jul 12, 2026 · Active 4h ago

Apatite: a hardness reference point that comes in surprising colors

by GemProspector15 Novice · Posted Jul 12, 2026 · Active 4h ago

Carnelian and onyx: two names that get misused constantly

by BoulderFox54 Novice · Posted Jul 12, 2026 · Active 4h ago

Galena and sphalerite: the classic ore pair

by SlateKing53 Novice · Posted Jul 12, 2026 · Active 4h ago

Jade: nephrite and jadeite are two different minerals

by VeinChaser66 Novice · Posted Jul 12, 2026 · Active 4h ago

Petrified wood: how a tree becomes stone

by BasaltNomad62 Novice · Posted Jul 12, 2026 · Active 4h ago

Topaz: a hard stone with one real weakness

by BasaltSmith67 Novice · Posted Jul 12, 2026 · Active 4h ago

Spinel: the great imitator that fooled royalty

by MicaNomad80 Novice · Posted Jul 12, 2026 · Active 4h ago

Tourmaline: one mineral group, an enormous range of colors

by VeinKing36 Novice · Posted Jul 12, 2026 · Active 4h ago

Diamond field identification: what actually works, and what does not

by RockNomad28 Novice · Posted Jul 12, 2026 · Active 4h ago

Calcite: soft, reactive, and sometimes double vision

by GraniteProspector41 Novice · Posted Jul 12, 2026 · Active 4h ago

Found this on my Arizona ranch — dense, heavy, reddish-brown. Iron meteorite?

by rockfan_jake Rock Hound · Posted Jun 09, 2026 · Active 18h ago

Ammonites: extinct cephalopods with a genuinely useful dating tool

by BasaltSage27 Novice · Posted Jul 12, 2026 · Active 18h ago

Sodalite and lapis lazuli: blue stones that are often mixed up

by BoulderNomad15 Novice · Posted Jul 12, 2026 · Active 18h ago

Page 1 of 2 — 31 posts total

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