{"product_id":"large-amethyst-geode-calcite-5kg-cathedral-brazil","title":"Large Amethyst Geode with Calcite | 5kg Cathedral Specimen | Crystal Décor \u0026 Gift","description":"\u003ch2\u003eLarge Amethyst Geode with Calcite — 5kg Cathedral Specimen, Brazil\u003c\/h2\u003e\n\n\u003cp\u003eA truly extraordinary natural amethyst geode, hand-selected for its exceptional depth of colour, rich calcite inclusions, and commanding cathedral formation. At over 5kg and nearly 30cm tall, this is a statement piece in every sense — equally at home in a serious mineral collection, a luxury interior, or a meditation space.\u003c\/p\u003e\n\n\u003ch3\u003eSpecimen Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 29 × 19.5 × 11 cm (approx. 11.4 × 7.7 × 4.3 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 5.068 kg (approx. 11.2 lb)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFormation type:\u003c\/strong\u003e Cathedral geode with calcite inclusions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Ethically sourced from Brazil\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Deep violet-purple amethyst with white\/cream calcite\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e Natural and untreated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExact piece guarantee:\u003c\/strong\u003e You receive the piece shown — no substitutions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGeology of Amethyst\u003c\/h3\u003e\n\u003cp\u003eAmethyst is the purple variety of quartz (SiO₂), coloured by trace amounts of iron and natural irradiation within the crystal lattice. It forms inside volcanic rock cavities — known as geodes — where silica-rich hydrothermal fluids slowly crystallise over millions of years. The result is the iconic hollow cavity lined with inward-pointing crystals that defines a geode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCathedral amethyst\u003c\/strong\u003e refers to geodes with tall, spire-like crystal formations that resemble the vaulted architecture of a cathedral — one of the most prized geode forms among collectors. The presence of \u003cstrong\u003ecalcite\u003c\/strong\u003e in this specimen adds a secondary mineral layer, formed when calcium carbonate-rich fluids later permeated the cavity, creating the white to cream crystalline deposits visible alongside the amethyst.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMineral:\u003c\/strong\u003e Amethyst (variety of quartz, SiO₂)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrystal system:\u003c\/strong\u003e Trigonal (hexagonal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 7 on the Mohs scale\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecific gravity:\u003c\/strong\u003e 2.65\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLustre:\u003c\/strong\u003e Vitreous\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransparency:\u003c\/strong\u003e Transparent to translucent\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColour cause:\u003c\/strong\u003e Iron impurities + natural gamma irradiation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary mineral:\u003c\/strong\u003e Calcite (CaCO₃) — trigonal, Mohs 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFormation environment:\u003c\/strong\u003e Hydrothermal veins and volcanic basalt cavities\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNotable localities:\u003c\/strong\u003e Rio Grande do Sul (Brazil), Uruguay, Zambia, South Korea, Mexico\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHistory \u0026amp; Cultural Significance\u003c\/h3\u003e\n\u003cp\u003eAmethyst has been prized by civilisations for over 4,000 years. Ancient Egyptians carved it into amulets and scarabs; Greek and Roman nobility wore amethyst rings and goblets, believing the stone prevented intoxication — the name derives from the Greek \u003cem\u003eamethystos\u003c\/em\u003e, meaning “not drunk.” Medieval European clergy wore amethyst as a symbol of piety and celibacy, and it featured prominently in royal regalia across Britain, Russia, and the Holy Roman Empire.\u003c\/p\u003e\n\n\u003cp\u003eBrazil — particularly the Rio Grande do Sul region — became the world’s dominant source of amethyst geodes in the 20th century, supplying museum collections and private collectors globally with specimens of unmatched size and colour saturation.\u003c\/p\u003e\n\n\u003ch3\u003eCrystal Properties of Amethyst\u003c\/h3\u003e\n\u003cp\u003eAmethyst is one of the most widely used crystals in healing and spiritual traditions. It resonates with the \u003cstrong\u003ecrown chakra\u003c\/strong\u003e and \u003cstrong\u003ethird eye chakra\u003c\/strong\u003e, and is associated with clarity of mind, protection, and spiritual connection.\u003c\/p\u003e\n\n\u003ch4\u003eEnergetic \u0026amp; Emotional Properties\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalm \u0026amp; clarity:\u003c\/strong\u003e Quiets mental chatter and promotes clear, focused thinking\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Long regarded as a protective stone against negative energy and psychic stress\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSleep support:\u003c\/strong\u003e One of the most recommended crystals for insomnia — place near the bed to encourage restful sleep\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiritual awareness:\u003c\/strong\u003e Enhances intuition, meditation depth, and connection to higher consciousness\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSobriety \u0026amp; balance:\u003c\/strong\u003e Historically associated with temperance and emotional equilibrium\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eStone Reference Data\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChakras:\u003c\/strong\u003e Crown (7th) and Third Eye (6th)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZodiac:\u003c\/strong\u003e Pisces, Virgo, Aquarius, Capricorn\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElement:\u003c\/strong\u003e Air, Water\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBirthstone:\u003c\/strong\u003e February\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 7 (Mohs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eHow to Use This Geode\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDisplay in a living room, bedroom, or hallway as a natural focal point\u003c\/li\u003e\n  \u003cli\u003ePlace in a meditation or yoga space to deepen practice and calm the mind\u003c\/li\u003e\n  \u003cli\u003ePosition in a home office to promote focus and reduce stress\u003c\/li\u003e\n  \u003cli\u003eUse as a charging station — many practitioners place smaller crystals inside the geode cavity to cleanse and energise them\u003c\/li\u003e\n  \u003cli\u003eGift for birthdays (especially February), housewarmings, or milestone occasions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMineral collectors seeking a high-quality Brazilian cathedral geode\u003c\/li\u003e\n  \u003cli\u003eLuxury interior design — living rooms, studies, reception areas\u003c\/li\u003e\n  \u003cli\u003eMeditation rooms, yoga studios, and wellness spaces\u003c\/li\u003e\n  \u003cli\u003eThoughtful gifts for crystal lovers, spiritual practitioners, or design-conscious friends\u003c\/li\u003e\n  \u003cli\u003eFebruary birthstone gifts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCare \u0026amp; Handling\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAvoid prolonged direct sunlight — UV exposure can fade amethyst’s purple colour over time\u003c\/li\u003e\n  \u003cli\u003eDust gently with a soft dry brush or cloth — avoid harsh chemicals\u003c\/li\u003e\n  \u003cli\u003eThe calcite inclusions are softer (Mohs 3) than the amethyst — handle with care to avoid chipping\u003c\/li\u003e\n  \u003cli\u003eStore on a stable, flat surface — geodes are top-heavy and can tip\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNatural Specimen Notice\u003c\/h3\u003e\n\u003cp\u003eAs a natural mineral specimen, minor surface variations, inclusions, or blemishes are inherent to the piece and not considered defects. Please review all photos carefully and verify measurements before purchasing.\u003c\/p\u003e\n\n\u003cp\u003eNeed additional photos or have a question? \u003ca href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e — we’re happy to help.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eFollow us on Instagram \u003cstrong\u003e@Million_Years_Crystal\u003c\/strong\u003e for new arrivals and giveaways.\u003c\/em\u003e\u003c\/p\u003e","brand":"Million Years Crystal","offers":[{"title":"Default Title","offer_id":55242602840439,"sku":"Amethyst Specimen","price":275.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/4642\/6487\/files\/NaturalAmethystWithCalciteLargeGeode5.jpg?v=1781261062","url":"https:\/\/millionyearscrystal.com\/products\/large-amethyst-geode-calcite-5kg-cathedral-brazil","provider":"Million Years Crystal","version":"1.0","type":"link"}