{"title":"United States","description":"\u003cp\u003eThe United States features major collecting localities such as Sweet Home, Elmwood, Herkimer County, and Red Cloud. Known for calcite, fluorite, quartz, wulfenite, and copper minerals.\u003c\/p\u003e","products":[{"product_id":"582g-honey-calcite-specimen-missouri-usa-116mm","title":"582 g Honey Calcite Specimen – Joplin Missouri, USA – 116 mm","description":"\u003cp data-start=\"791\" data-end=\"1131\"\u003eThis honey calcite specimen from Missouri’s historic Tri-State Mining District displays a warm gradient of color shifting from pale champagne to rich honey gold. Natural translucency and a silky-glassy luster allow light to penetrate the crystal body, giving the piece a soft internal glow that intensifies across its stepped crystal faces.\u003c\/p\u003e\n\u003cp data-start=\"1133\" data-end=\"1483\"\u003eAs the specimen shifts under light, a broad natural termination and geometric growth patterns become more pronounced, revealing subtle internal zoning that adds depth and structure. The warm golden hue remains consistent across the crystal, reflecting the classic aesthetic associated with Tri-State calcite formed alongside lead-zinc mineralization.\u003c\/p\u003e\n\u003cp data-start=\"1485\" data-end=\"1565\"\u003e\u003cstrong data-start=\"1485\" data-end=\"1496\"\u003eWeight:\u003c\/strong\u003e 582 g (1.28 lb)\u003cbr data-start=\"1512\" data-end=\"1515\"\u003e\u003cstrong data-start=\"1515\" data-end=\"1524\"\u003eSize:\u003c\/strong\u003e 116 × 84 × 64 mm (4.57 × 3.31 × 2.52 in)\u003c\/p\u003e\n\u003cp data-start=\"1567\" data-end=\"1773\"\u003eA meaningful addition for collectors who value large U.S. calcite specimens for their natural crystal geometry, warm coloration, and historical connection to America’s most famous lead-zinc mining district.\u003c\/p\u003e","brand":"Opal \u0026 Emerald Co.","offers":[{"title":"Default Title","offer_id":47404874006783,"sku":null,"price":425.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/9292\/1087\/files\/f3da3d12-8874-4866-91e4-9d5dfaf75dc7.jpg?v=1761268447"},{"product_id":"254g-honey-quartz-crystal-cluster-georgetown-california","title":"254 g Honey-Toned Quartz Cluster – Georgetown, California, USA – 91 mm","description":"\u003cp data-start=\"532\" data-end=\"888\"\u003eThis quartz cluster from Georgetown, California displays warm honey-toned coloration and clear, sharply terminated points characteristic of the locality’s best material. Multiple crystals rise together in a balanced formation, each showing a mix of clarity, translucence, and subtle internal zoning that catches and reflects light with shifting brightness.\u003c\/p\u003e\n\u003cp data-start=\"890\" data-end=\"1232\"\u003eAs the specimen moves under natural light, internal rainbows appear beneath the crystal surfaces, while gentle contrasts between milky and clear zones highlight the structure of each termination. The golden warmth throughout the cluster results from fine iron inclusions, giving the quartz a natural sunlit glow without obscuring its clarity.\u003c\/p\u003e\n\u003cp data-start=\"1234\" data-end=\"1313\"\u003e\u003cstrong data-start=\"1234\" data-end=\"1245\"\u003eWeight:\u003c\/strong\u003e 254 g (8.96 oz)\u003cbr data-start=\"1261\" data-end=\"1264\"\u003e\u003cstrong data-start=\"1264\" data-end=\"1273\"\u003eSize:\u003c\/strong\u003e 91 × 74 × 56 mm (3.58 × 2.91 × 2.20 in)\u003c\/p\u003e\n\u003cp data-start=\"1315\" data-end=\"1510\"\u003eA meaningful addition for collectors who value Sierra Nevada quartz for its sharp terminations, natural iron-tinted color, and balanced cluster geometry typical of Georgetown’s historic deposits.\u003c\/p\u003e","brand":"Opal \u0026 Emerald Co.","offers":[{"title":"Default Title","offer_id":47404885049599,"sku":null,"price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/9292\/1087\/files\/2ba40b36-bf06-44a5-9d10-e4eed7c59f3d.jpg?v=1761268715"},{"product_id":"72g-native-sulfur-specimen-maybee-quarry-michigan-usa-70mm","title":"72 g Native Sulfur Specimen – Maybee Quarry, Michigan, USA – 70 mm","description":"\u003cp data-start=\"559\" data-end=\"868\"\u003eThis native sulfur specimen glows with an intense lemon-yellow hue, displaying strong natural translucence and a soft, waxy luster that captures light from every angle. The surface reveals a dynamic texture of crystalline growth, giving the piece a sculptural, organic presence that immediately draws the eye.\u003c\/p\u003e\n\u003cp data-start=\"870\" data-end=\"1189\"\u003eAs the specimen shifts under light, the saturated yellow coloration remains rich and even across the crystal surfaces, a hallmark of high-quality sulfur from the historic Maybee Quarry in Michigan. The lively crystal habit and balanced proportions give the piece both strong visual impact and classic mineral character.\u003c\/p\u003e\n\u003cp data-start=\"1191\" data-end=\"1269\"\u003e\u003cstrong data-start=\"1191\" data-end=\"1202\"\u003eWeight:\u003c\/strong\u003e 72 g (2.54 oz)\u003cbr data-start=\"1217\" data-end=\"1220\"\u003e\u003cstrong data-start=\"1220\" data-end=\"1229\"\u003eSize:\u003c\/strong\u003e 70 × 54 × 24 mm (2.76 × 2.13 × 0.94 in)\u003c\/p\u003e\n\u003cp data-start=\"1271\" data-end=\"1430\"\u003eA meaningful addition for collectors who value native sulfur for its vivid color, sedimentary evaporite origin, and iconic status in North American mineralogy.\u003c\/p\u003e","brand":"Opal \u0026 Emerald Co.","offers":[{"title":"Default Title","offer_id":47404886491391,"sku":null,"price":255.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/9292\/1087\/files\/551376da-6bfe-454a-98c1-c468a15e9fcd.jpg?v=1761268752"},{"product_id":"halite-with-sphalerite-calcite-balmat-new-york","title":"136 g Halite with Sphalerite \u0026 Calcite Specimen – Balmat, New York – 66 mm","description":"\u003cp data-start=\"675\" data-end=\"1027\"\u003eThis halite–sphalerite specimen from the Empire State Zinc Mine #4 in the Balmat district of New York displays a striking balance of clarity, color, and contrasting mineral textures. Water-clear halite crystals rise in an ice-like cluster with sharply defined faces, each reflecting light with a crisp, glassy brilliance characteristic of the locality.\u003c\/p\u003e\n\u003cp data-start=\"1029\" data-end=\"1424\"\u003eWarm golden sphalerite crystals accent the halite surfaces, adding depth and tonal contrast, while subtle calcite associations reinforce the classic Balmat paragenesis. As the piece shifts under natural light, the halite’s internal clarity and reflective planes alternate between transparent glow and sharp specular flashes, while the sphalerite reveals its resinous luster and rich amber color.\u003c\/p\u003e\n\u003cp data-start=\"1426\" data-end=\"1580\"\u003e\u003cstrong data-start=\"1426\" data-end=\"1437\"\u003eWeight:\u003c\/strong\u003e 136 g (0.30 lb)\u003cbr data-start=\"1453\" data-end=\"1456\"\u003e\u003cstrong data-start=\"1456\" data-end=\"1465\"\u003eSize:\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003e66 × 52 × 52 mm (2.60 × 2.05 × 2.05 in)\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-start=\"1582\" data-end=\"1814\"\u003eA meaningful addition for collectors who appreciate the distinctive sulfide–halide mineral combinations from Balmat, especially specimens displaying both transparent halite and intact sphalerite crystals from documented mine levels.\u003c\/p\u003e","brand":"Opal \u0026 Emerald Co.","offers":[{"title":"Default Title","offer_id":47404896157951,"sku":null,"price":325.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/9292\/1087\/files\/1f886f70-2ea8-4156-ad63-41731a7ca74f.jpg?v=1761268911"},{"product_id":"160g-honeycomb-calcite-tower-unita-mountains-utah-71mm","title":"160 g Honeycomb Calcite Tower – Uinta Mountains, Utah – 71 mm","description":"\u003cp data-start=\"324\" data-end=\"669\"\u003eThis Honeycomb Calcite tower carries warm honey-amber translucence accented by a soft, creamy internal band that wraps naturally through its center. As light passes through the polished faces, the stone develops a comforting inner glow that highlights its gentle cellular textures and layered internal variation unique to this calcite formation.\u003c\/p\u003e\n\u003cp data-start=\"671\" data-end=\"944\"\u003eWhen turned under illumination, zones of brightness open into soft golden pools before diffusing again into mellow amber haze. The contrast between creamy banding and luminous translucence gives the tower a calm, dimensional presence that feels grounded yet softly radiant.\u003c\/p\u003e\n\u003cp data-start=\"946\" data-end=\"1025\"\u003e\u003cstrong data-start=\"946\" data-end=\"957\"\u003eWeight:\u003c\/strong\u003e 160 g (5.64 oz)\u003cbr data-start=\"973\" data-end=\"976\"\u003e\u003cstrong data-start=\"976\" data-end=\"985\"\u003eSize:\u003c\/strong\u003e 71 × 36 × 36 mm (2.80 × 1.42 × 1.42 in)\u003c\/p\u003e\n\u003cp data-start=\"1027\" data-end=\"1206\"\u003eA serene, display-ready piece for collectors who appreciate warm mineral tones, natural internal texture, and the balanced architectural presence unique to fine Honeycomb Calcite.\u003c\/p\u003e","brand":"Opal \u0026 Emerald Co.","offers":[{"title":"Default Title","offer_id":47576875696383,"sku":null,"price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/9292\/1087\/files\/72bd606e-9a79-40d0-b180-2fe76dcd94e9.jpg?v=1763766187"},{"product_id":"honeycomb-calcite-tower-152g-utah","title":"152 g Honeycomb Calcite Tower – Utah – 67 mm","description":"\u003cp data-start=\"8772\" data-end=\"9156\"\u003eThis Honeycomb Calcite tower carries a warm, amber-honey glow that deepens as light passes through it. Soft golden translucence wraps around a natural creamy band, emphasizing the internal cellular structure that makes Honeycomb Calcite so recognizable and inviting. As you move it in the light, some zones brighten into sunlit gold while others settle into a smooth, diffused warmth.\u003c\/p\u003e\n\u003cp data-start=\"9158\" data-end=\"9469\"\u003eSubtle variations in tone and texture reveal themselves gradually—small shifts in angle bring out layered structure, gentle clouding, and the natural patterning created as calcite formed and recrystallized. The overall effect is calming and luminous, with a presence that feels both grounded and softly radiant.\u003c\/p\u003e\n\u003cp data-start=\"9471\" data-end=\"9550\"\u003e\u003cstrong data-start=\"9471\" data-end=\"9482\"\u003eWeight:\u003c\/strong\u003e 152 g (5.36 oz)\u003cbr data-start=\"9498\" data-end=\"9501\"\u003e\u003cstrong data-start=\"9501\" data-end=\"9510\"\u003eSize:\u003c\/strong\u003e 67 × 39 × 32 mm (2.64 × 1.54 × 1.26 in)\u003c\/p\u003e\n\u003cp data-start=\"9552\" data-end=\"9808\"\u003eThe polished tower form draws the eye upward along its vertical structure, showcasing the banding and inner glow that develop through evaporitic formation. It’s a display-ready piece selected for its warmth, light response, and refined architectural shape.\u003c\/p\u003e","brand":"Opal \u0026 Emerald Co.","offers":[{"title":"Default Title","offer_id":47591284998399,"sku":null,"price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/9292\/1087\/files\/8a8a0c5f-ff1f-4825-81a7-a2d40af51b0d.jpg?v=1764124224"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/9292\/1087\/collections\/551376da-6bfe-454a-98c1-c468a15e9fcd.jpg?v=1764711512","url":"https:\/\/opalandemerald.com\/collections\/united-states.oembed","provider":"Opal \u0026 Emerald Co.","version":"1.0","type":"link"}