A little deeper. A little more curious.

Crystal Shapes: What Crystal Forms Can Tell You

Learn how crystal shapes form, what common habits may suggest, and why appearance alone cannot identify a mineral or verify its origin.

Crystal vs. Mineral: What’s the Difference?

Learn how crystals and minerals differ, what they share, and which visible clues can help identify a specimen without proving what it is.

Observation methods and lookalike materials4 MIN READ

Cubic Crystal Shape Minerals: How to Recognize Cubes and Their Lookalikes

Learn which minerals commonly form cubic crystals, what visible features can suggest, and when testing is needed to identify a specimen.

Gem varieties and visual phenomena5 MIN READ

Dalmatian Jasper Identification: Patterns, Lookalikes, and Testing

Learn the visual clues that suggest Dalmatian jasper, how to distinguish common lookalikes, and what gemological testing can—and cannot—confirm.

Diamond vs. Cubic Zirconia: Key Differences and How to Tell

Compare diamond and cubic zirconia by composition, appearance, durability, and the limits of visual identification.

Diamond vs. Moissanite: How to Tell Them Apart

Compare diamond and moissanite by appearance, durability, composition, and the limits of visual identification.

Observation methods and lookalike materials5 MIN READ

Double Refraction in Gemstones: What It Reveals and What It Doesn’t

Learn how double refraction appears in gemstones, which visible clues can help, and when professional gem testing is needed.

Emerald vs. Green Beryl: How to Tell the Difference

Learn how emerald and green beryl are related, which visible clues may help distinguish them, and when gemological testing is needed.

Gem varieties and visual phenomena5 MIN READ

Fire Agate Identification: Visible Clues and Reliable Testing

Learn the visible features of fire agate, how it differs from similar stones, and what professional testing can—and cannot—confirm.

Individual stone identification guides5 MIN READ

Fluorite Identification: Color, Cleavage, Hardness, and Common Lookalikes

Learn the visible clues that help identify fluorite, how it compares with common lookalikes, and which tests require a qualified gemologist.

Gemstone Color Chart: A Guide to Colors, Varieties, and Identification

Compare common gemstone colors, learn how color is described, and see why appearance alone cannot confirm a gem’s identity or authenticity.

Gemstone vs. Crystal: What’s the Difference?

Learn how gemstones and crystals differ, where the terms overlap, and which visible clues help distinguish them from what requires expert testing.

Observation methods and lookalike materials5 MIN READ

Geode vs. Crystal Cluster: How to Tell Them Apart

Learn how a geode differs from a crystal cluster using visible clues, with practical guidance on what appearance can—and cannot—confirm.

Gem varieties and visual phenomena5 MIN READ

Green Calcite Identification: Visual Clues and Reliable Tests

Learn the visible clues that can suggest green calcite, how it differs from similar stones, and which tests can confirm its identity.

Green Gemstones: How to Recognize and Compare Popular Green Gems

Explore emerald, jade, tourmaline, peridot, and other green gemstones, including visible clues, key differences, and when professional testing is needed.

Individual stone identification guides5 MIN READ

Hematite Identification: Color, Streak, Luster, and Key Clues

Learn how to recognize hematite by its appearance, streak, luster, and context—and understand what visual clues cannot confirm.

Hematite vs Magnetite: How to Tell These Iron Ores Apart

Compare hematite and magnetite by color, streak, luster, magnetism, and safe ways to identify each mineral.

Observation methods and lookalike materials5 MIN READ

Hexagonal Crystal Shape Minerals: How to Recognize Them

Learn which minerals commonly form hexagonal crystals, what their shapes can reveal, and how to distinguish visible clues from reliable identification.