{"product_id":"lortone-stage-4-aluminum-oxide-polish-1-microns","title":"Lortone Step 4 Aluminum Oxide Polish - 1 Microns","description":"\u003ch3\u003eThe final step to a brilliant, high-gloss finish.\u003c\/h3\u003e\n\u003cp\u003eThis is the step you've been waiting for.\u003c\/p\u003e\n\u003cp\u003eAfter your rocks have been shaped, smoothed and pre-polished, \u003cstrong\u003eLortone Step 4 Aluminum Oxide Polish\u003c\/strong\u003e provides the ultra-fine finishing action needed to bring out a beautiful, glossy shine.\u003c\/p\u003e\n\u003cp\u003eWith a particle size of just \u003cstrong\u003e1 micron\u003c\/strong\u003e, this high-quality aluminum oxide polish is five times finer than Lortone's 5-micron Stage 3 pre-polish. The extremely fine abrasive works on the already-refined surface to produce the smooth, lustrous finish that makes polished rocks so satisfying to hold and admire.\u003c\/p\u003e\n\u003cp\u003eLortone describes its aluminum oxide polish as a low-cost tumbling polish that produces a great finish on most stones and leaves little or no residue on the stones.\u003c\/p\u003e\n\u003ch3\u003eWhy Stage 4 Makes the Difference\u003c\/h3\u003e\n\u003cp\u003eA stone can look smooth after Stage 3 and still have microscopic surface imperfections that prevent it from achieving its full shine.\u003c\/p\u003e\n\u003cp\u003eThat's where the \u003cstrong\u003e1-micron final polish\u003c\/strong\u003e comes in.\u003c\/p\u003e\n\u003cp\u003eStage 3 uses 5-micron abrasive to refine the surface. Stage 4 takes that process even further, using particles approximately \u003cstrong\u003e80% smaller in diameter\u003c\/strong\u003e than the Stage 3 abrasive.\u003c\/p\u003e\n\u003cp\u003eThe result is a smoother surface capable of producing the deep, glossy appearance you're looking for from a properly finished tumble.\u003c\/p\u003e\n\u003ch3\u003eProduct Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1-micron aluminum oxide\u003c\/strong\u003e final polish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for \u003cstrong\u003eStage 4\u003c\/strong\u003e of the Lortone tumbling process\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApproximately five times finer than the 5-micron Stage 3 pre-polish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProduces a smooth, glossy finish on most suitable tumbling stones\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExcellent final polishing compound for hard rocks and gemstones\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLeaves little or no residue on stones\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal for achieving a professional-looking final finish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere It Fits in the Lortone 4-Step Process\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eStage 1:\u003c\/strong\u003e 60\/90 Silicon Carbide – coarse grinding\u003cbr\u003e\u003cstrong\u003eStage 2:\u003c\/strong\u003e 120\/220 Silicon Carbide – medium\/fine grinding\u003cbr\u003e\u003cstrong\u003eStage 3:\u003c\/strong\u003e 5 Micron Aluminum Oxide Pre-Polish – surface refinement\u003cbr\u003e\u003cstrong\u003eStage 4:\u003c\/strong\u003e \u003cstrong\u003e1 Micron Aluminum Oxide Polish – final polish\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e1 Micron – What Does That Mean?\u003c\/h3\u003e\n\u003cp\u003eA micron (µm) is one-millionth of a meter.\u003c\/p\u003e\n\u003cp\u003eAt just \u003cstrong\u003e1 micron\u003c\/strong\u003e, Lortone's Stage 4 aluminum oxide is an extremely fine polishing compound—approximately equivalent to a \u003cstrong\u003e14,000-grit abrasive\u003c\/strong\u003e as a general comparison.\u003c\/p\u003e\n\u003cp\u003eBecause grit and micron measurements use different grading systems, the grit comparison should be considered approximate. The \u003cstrong\u003e1-micron specification is the more precise measurement\u003c\/strong\u003e for describing this polish.\u003c\/p\u003e\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eUse Lortone Step 4 only after your stones have successfully completed the Stage 3 pre-polish.\u003c\/p\u003e\n\u003cp\u003eBefore beginning the final polish:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003eThoroughly clean your stones.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eClean the tumbler barrel, lid and any tumbling media.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMake sure there is no leftover Stage 3 abrasive.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdd your stones, appropriate tumbling media, water and Stage 4 polish.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRun the final polishing stage according to your tumbling process and check the stones periodically.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eCleanliness is especially important during Stage 4.\u003c\/strong\u003e Any contamination from the coarser grinding or pre-polishing stages can introduce scratches and reduce the quality of your final finish.\u003c\/p\u003e\n\u003ch3\u003eThe Final Step\u003c\/h3\u003e\n\u003cp\u003eYou've already done the hard work.\u003c\/p\u003e\n\u003cp\u003eStage 1 shapes the stones.\u003cbr\u003eStage 2 smooths them.\u003cbr\u003eStage 3 prepares the surface.\u003cbr\u003e\u003cstrong\u003eStage 4 brings out the shine.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor rock tumblers looking for that smooth, glossy, polished finish, Lortone Step 4 Aluminum Oxide Polish is the final finishing compound in the four-step process.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePair it with Lortone Step 3 Aluminum Oxide Pre-Polish for the complete finishing sequence.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Lortone","offers":[{"title":"11 ounces","offer_id":48275894894818,"sku":"591-026","price":24.99,"currency_code":"USD","in_stock":true},{"title":"5 pounds","offer_id":48275894927586,"sku":"591-027","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1758\/3074\/files\/lortonestep4aluminumoxidepolish1micron_1.png?v=1787887054","url":"https:\/\/thegemstonelab.com\/products\/lortone-stage-4-aluminum-oxide-polish-1-microns","provider":"The Gemstone Lab","version":"1.0","type":"link"}