{"product_id":"zexclusive-petrified-wood-polished-slab-black-tan-cross-section-bark-edge-collector-grade-authenticated-natural-specimen","title":"zExclusive Petrified Wood Slice Black Heartwood Polished Face — Collector Grade Authenticated Fossil Specimen","description":"\u003cp\u003e\u003cstrong\u003ezExclusive | Collector-Grade Petrified Wood Specimen\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis authenticated petrified wood slice presents one of the most visually commanding contrasts found in fossilized wood: a deep black silicified heartwood core set against a warm tan bark rind boundary. The face has been precision machine-polished to a gallery-ready finish, revealing preserved wood grain structure and genuine permineralization color zonation — hallmarks of authentic silicified wood.\u003c\/p\u003e\u003cp\u003eThe reverse retains its natural rough bark rind, offering dual-sided display potential. Exhibit the polished face for dramatic visual impact, or present the raw reverse for educational and geological context. This duality is a meaningful value signal among serious collectors and natural history enthusiasts.\u003c\/p\u003e\u003cp\u003eAuthenticity is confirmed by visible wood grain patterning on the polished surface, natural bark-to-heartwood boundary transition, and the characteristic color zonation produced by true mineral replacement over geologic time. Condition is assessed as excellent — polished face intact, no major cracks, bark rind boundary cleanly preserved.\u003c\/p\u003e\u003cp\u003eSpecimen is estimated medium in size and carries a display-grade, mid-tier resale classification within the zExclusive authenticated fossil inventory. Weight: 1 lb. Exact dimensions are specimen-specific; please inquire for precise measurements prior to purchase.\u003c\/p\u003e","brand":"zexclusive","offers":[{"title":"Default Title","offer_id":55740294070564,"sku":"ZEX-00100","price":86.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0867\/4875\/8308\/files\/ZEX-00100_01.png?v=1784141982","url":"https:\/\/zebraindustries.net\/products\/zexclusive-petrified-wood-polished-slab-black-tan-cross-section-bark-edge-collector-grade-authenticated-natural-specimen","provider":"Zebra \u0026 Co.","version":"1.0","type":"link"}