Jenn's crystal guide

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Rainbow iridescence from interference and diffraction of light in the fine, closely packed nacre layers. Haliotis species produce the highest degree of iridescence among shells.

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The ambient-stable silver sulfide. Essential for Ag-suite collectors. Argentite excluded as separate ambient species (paramorph of acanthite).

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Long prisms with a triangular cross-section, rounded sides and strong striations parallel to the main axis; vitreous lustre. Quite rare.

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Actinolite is A calcium-magnesium-iron amphibole in the tremolite-actinolite-ferroactinolite series. Traditionally associated with grounding, resilience, balance, patience, and renewal. Collectors and practitioners may keep Actinolite for study, display, meditation, journaling, or as a personal symbolic reminder — not as medical care.

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Adamite is Zinc arsenate hydroxide. Traditionally associated with motivation, joy, confidence, creativity, and emotional expression. Collectors and practitioners may keep Adamite for study, display, meditation, journaling, or as a personal symbolic reminder — not as medical care.

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Aegirine is A sodium-iron pyroxene. Traditionally associated with focus, boundaries, confidence, grounding, and clear direction. Collectors and practitioners may keep Aegirine for study, display, meditation, journaling, or as a personal symbolic reminder — not as medical care.

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Signature black Ti-silicate of peralkaline complexes. Complements aegerine, eudialyte, and other alkaline-complex minerals. Greenland and Pantelleria specimens classic.

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Name derives from the Achates (Dirillo) River in southwestern Sicily, the originally reported locality. Slightly porous, so it dyes easily; horizontally banded material has long been cut for cameos and engravings.

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Used in crystal collections and jewelry for its unique fossil patterning and earthy colors. Popular among collectors who appreciate geological history in gemstone form.

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Ag–Se–S species completing the naumannite–aguilarite selenium-silver suite.

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Pb–Cu–Bi sulfosalt completing the cosalite–aikinite–bismuthinite suite.

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Hydrated copper aluminum silicate with a zeolite-like layered structure alternating with octahedral copper-oxide sheets. Traditionally associated with: gentle communication and emotional clarity, echoing its soft turquoise-blue-green color. Collectors and practitioners may keep this specimen for study, display, meditation, journaling, or as a personal symbolic reminder — not as medical care.

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Archaeologists and the stone industry also apply 'alabaster' to a fine-grained banded calcite; buyers should be told which of the two a given piece is.

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Albite is The sodium-rich end member of the plagioclase feldspar series. Traditionally associated with clarity, adaptability, perspective, organization, and calm. Collectors and practitioners may keep Albite for study, display, meditation, journaling, or as a personal symbolic reminder — not as medical care.

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Alexandrite is A color-change variety of chrysoberyl. Traditionally associated with adaptability, confidence, emotional balance, renewal, and thoughtful judgment. Collectors and practitioners may keep Alexandrite for study, display, meditation, journaling, or as a personal symbolic reminder — not as medical care.

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Mn humite-group member for Franklin and North Carolina Mn-deposit collectors. Complements humite (already cataloged) as a distinct Mn-dominant species.

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Completes the glaucodot–alloclasite dimorph pair. collector mineral for Co suites.

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Isometric, typically dodecahedral to trapezohedral crystals in deep red to brownish-red, forming in metamorphic rocks. Star garnet — almandine with a rutile-inclusion star — is the Idaho state gemstone.

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Pb telluride anchor for Au–Te suites. Complements hessite and nagyagite.

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Mineralogically and historically interesting — mined for alum production since the 15th century. Found in volcanic fumarole environments. More commonly a scientific study specimen than a decorative crystal.

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A turquoise green stone with white streaks and a calming matte finish. Traditionally associated with truth and harmony. Many people use it in personal practice for soothing tense situations and finding balance.

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A warm golden fossilized resin with ancient inclusions and a gentle glow. Traditionally associated with warmth and ancestral connection. Many people use it in personal practice for comfort during difficult times and connecting with ancient wisdom.

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Amblygonite is A lithium-aluminum phosphate fluoride in the amblygonite group. Traditionally associated with quieting mental overload, approaching change steadily, and making decisions without unnecessary pressure. Collectors and practitioners may keep Amblygonite for study, display, meditation, journaling, or as a personal symbolic reminder — not as medical care.

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A purple quartz with translucent to opaque coloring and pointed formations. Traditionally associated with spiritual awareness and inner peace. Many people use it in personal practice for meditation and quiet reflection.

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A quartz with both purple amethyst and yellow citrine in one crystal. Traditionally associated with balance and the union of spiritual and material worlds. Many people use it in personal practice for finding balance between intuition and action.

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Iridescent reds, oranges, greens and blues; occurs as either 'fractured' material resembling stained glass or continuous 'sheet' material.

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Chambered, coiled, ribbed spiral shells, each chamber sealed by a septum as the animal grew; often cut and polished to show the spiral cross-section.

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Popular with zeolite and volcanic mineral collectors for its beautiful trapezohedron crystal form. Found alongside other zeolites and makes distinctive specimens. Used in crystal collections for its orderly cubic appearance.

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Andalusite is Aluminum silicate, Al2SiO5, often pink, brown, yellow, green, white, or gray. Traditionally associated with staying grounded while considering different viewpoints, making thoughtful choices, and remaining steady during change. Collectors and practitioners may keep Andalusite for study, display, meditation, journaling, or as a personal symbolic reminder — not as medical care.

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Sodium-calcium plagioclase feldspar with an albite:anorthite molar ratio of roughly 70:30 to 50:50, triclinic. Traditionally associated with: warmth, courage, and confident self-expression, echoing its sunlit orange-red coloration in gem-quality material. Collectors and practitioners may keep this specimen for study, display, meditation, journaling, or as a personal symbolic reminder — not as medical care.