{"product_id":"50-to-100-carats-parcels-of-rough-rare-indicolite-blue-spinels-training-rough-material","title":"50 to 100 carats Parcels of Rough Rare Indicolite Blue Spinels - Training Rough Material","description":"\u003ch3 data-start=\"192\" data-end=\"272\"\u003eGrabs Deals on Natural Facet-Grade Rough Spinels for Lapidary Artists\u003c\/h3\u003e\n\u003cp data-start=\"274\" data-end=\"414\"\u003eGemstone cutters can now access this stunning Burmese spinel parcel, ideal for faceting or cabbing. Available in 50, 100, or 150 carat lots.\u003c\/p\u003e\n\u003ch2 class=\"_h2_pkyxj_34\" id=\"key-features\"\u003eKey Features:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli class=\"_p_pkyxj_65\"\u003e\n\u003cstrong\u003e\u003cspan\u003eStone Name:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Natural Raw Spinel Stones\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"_p_pkyxj_65\"\u003e\n\u003cstrong\u003e\u003cspan\u003eTotal Weight of Deals:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 50 carats - 100 carats deals\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"_p_pkyxj_65\"\u003e\n\u003cstrong\u003e\u003cspan\u003eSize Range:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e .40 carat up to 2.50 ct per piece\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"_p_pkyxj_65\"\u003e\n\u003cstrong\u003e\u003cspan\u003eColor Range:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Predominantly purple to violet with blue-purple secondary tones; includes deep royal purple, lavender-purple, violet-blue, and teal-blue specimens. \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"_p_pkyxj_65\"\u003e\n\u003cstrong\u003e\u003cspan\u003eTransparency:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Transparent to semi-transparen\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"_p_pkyxj_65\"\u003e\n\u003cstrong\u003e\u003cspan\u003eTreatment:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e None – 100% natural \u0026amp; untreated\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"_p_pkyxj_65\"\u003e\n\u003cstrong\u003e\u003cspan\u003eOrigin:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Burmese\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"_p_pkyxj_65\"\u003e\n\u003cstrong\u003e\u003cspan\u003eHardness:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 7.5 – 8.0 on Mohs scale (ideal for durable faceted stones)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"_p_pkyxj_65\"\u003e\u003cspan\u003e\u003cstrong\u003eIdeal for: \u003c\/strong\u003eFaceting, Making faceted loose stones, Cabochons\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003eAdditional Characteristics\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"_ul_pkyxj_89\"\u003e\n\u003cli\u003e\u003cspan\u003eIrregular rough forms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eColor saturation ranges from medium to strong intensity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSeveral pieces display clean, gem-quality windows\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNatural inclusions visible include silk and minor surface pitting which are found and consistent with untreated material\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"_h2_pkyxj_34\" id=\"technical-analysis-facet-grade-rough-purple-spinels\"\u003eTechnical Analysis of Facet Grade Raw Purple Spinels\u003c\/h2\u003e\n\u003ch3 class=\"_h3_pkyxj_40\" id=\"material-specifications\"\u003eSpecifications of Spinel Rough lot\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHardness\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: 7.5-8.0 Mohs (excellent durability for faceting)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCrystal System\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Cubic (isometric) - no cleavage planes\u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSpecies\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Natural Spinel (MgAl₂O₄)\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Burma (Myanmar)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTreatment\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Natural \/ Unaltered\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"_h3_pkyxj_40\" id=\"rough-quality-assessment\"\u003eQuality Assessment of Rough Lot\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003eTransparency and Clarity Levels\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"_ul_pkyxj_89\"\u003e\n\u003cli\u003e\u003cspan\u003eLot has mixed transparency  i.e. from transparent to semi-transparent\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe lot is suitable for approximately 30 to 40% yield for precision faceting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe spinels may have some common inclusions such as silk, fingerprint inclusions, minor surface pitting\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"_h3_pkyxj_40\"\u003eYield Analysis and \u003cmeta charset=\"utf-8\"\u003eCutting Potential\u003c\/h3\u003e\n\u003ch3 class=\"_h3_pkyxj_40\" id=\"cutting-potential--yield-analysis\"\u003e\u003c\/h3\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003eSize Distribution of the Spinel Lot:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"_ul_pkyxj_89\"\u003e\n\u003cli\u003e\u003cspan\u003eStone weights range: 0.40-2.50 carats per piece \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSize ranges for calibrated cuts and matched pairs in small sizes or Melee sizes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe rough lot of spinels is perfect for  both commercial and custom cutting projects\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003eRecommendations over Cutting Approaches:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col class=\"_ol_pkyxj_90\" start=\"1\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePrecision Faceting\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: One can cut them and shapes into round brilliants and ovals.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFancy Cuts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Freeform designs to maximize unique color patterns\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCabochons\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Dome shape cabochons\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCalibrated Stones\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Standard melee sizes for jewelry setting such as 1mm, 2mm, 3mm, 4mm, 5mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3 class=\"_h3_pkyxj_40\" id=\"technical-cutting-considerations\"\u003eTechnical Cutting Tips and Facts Under Consideration \u003c\/h3\u003e\n\u003cul class=\"_ul_pkyxj_89\"\u003e\n\u003cli\u003e\u003cspan\u003eUse fiber optic lighting to identify color concentration zones\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eShallow crown angles (35-40°) recommended for maximum brilliance\u003c\/span\u003e\u003cspan\u003eOrient table perpendicular to color bands for even distribution\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConsider pavilion depth of 43-45% for optimal light return\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003ePolishing Characteristics:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFinal polishing: 100k diamond or cerium oxide on felt\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBrilliant polish can be got with standard diamond compounds\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRecommended sequence: 3000 → 8000 → 14000 → 50000 diamond grit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdjust lap speed as medium to prevent thermal shock\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003eDopping \u0026amp; Handling of Spinels:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"_ul_pkyxj_89\"\u003e\n\u003cli\u003e\u003cspan\u003eAdjust with Low thermal expansion - Ensure stable during heating\/cooling cycles\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUse standard dopping wax\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnsure minimal risk of thermal fracturing\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"_h3_pkyxj_40\" id=\"market-value-indicators\"\u003eMarket Value of Spinel Gemstones Indicators\u003c\/h3\u003e\n\u003cul class=\"_ul_pkyxj_89\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBeginner-Friendly\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: This parcel is excellent training material due to forgiving nature\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCommercial Viability\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Spinels have strong market demands\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eYield Optimization\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: 35-50% typical yield for experienced cutters\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMatched Pairs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: The lot has a potential for creating valuable matching sets\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"_h2_pkyxj_34\" id=\"faqs---spinel-rough-guidance-for-gemstone-cutters\"\u003eFAQs - Spinel Rough Guidance for Gemstone Cutters\u003c\/h2\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What percentage of this lot is suitable for precision faceting versus cabochon cutting?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cspan\u003eA: 35 to 45% of the raw spinel stone parcel is suitable for precision faceting. However, this must be based on the transparency and clarity levels. The remaining lot with visible silk inclusions or lower transparency would be good for cahochon cutting. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: How should I handle the color zoning visible in many of these spinel stones during cutting?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cspan\u003eA: Use fiber optic lighting to understand the color distribution before dopping. Orient the table perpendicular to color bands for even color distribution, or alternatively, position zoning strategically to create unique color patterns in fantasy cuts. The natural purple-to-blue zoning in this lot can create stunning bi-color or parti-colored finished stones when properly oriented.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Are the surface conditions typical for Burmese alluvial spinel, and will they affect cutting yield?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cspan\u003eA: Yes, the surface textures and minor pitting visible are characteristic of alluvial Burmese material. Most surface imperfections will be removed during preforming and faceting. Expect typical yields of 35-45% for experienced cutters, with the irregular rough shapes requiring careful planning to maximize finished stone size. Read about Spinel inclusions here ....\u003ca title=\"Spinel Inclusions\" href=\"https:\/\/lotusgemology.com\/resources\/articles\/422-spinel-inclusions-exercise-in-aesthetics\"\u003e https:\/\/lotusgemology.com\/resources\/articles\/422-spinel-inclusions-exercise-in-aesthetics \u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What cutting challenges should I expect with the darker, more saturated stones in this lot?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cspan\u003eA: The deeper purple and blue-purple stones may require modified pavilion angles (slightly shallower at 41-43°) to allow maximum light return and prevent the stone from appearing too dark or \"windowed.\" Consider using step cuts or modified brilliants rather than standard round brilliants for these darker specimens to optimize their beauty.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: How can I identify which stones have the best potential for matched pairs or calibrated sets?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"_p_pkyxj_65\"\u003e\u003cspan\u003eA: Search stones from this lot with similar color saturation, transparency levels, and size ranges between 0.75-1.50 carats. Use consistent lighting to compare color matching - several stones in this lot show similar purple-blue tones that could yield beautiful matched pairs. Pre-sort by color intensity and clarity before cutting to maximize your chances of creating valuable sets.\u003c\/span\u003e\u003c\/p\u003e","brand":"Folkmarketgems","offers":[{"title":"50","offer_id":51750043976002,"sku":null,"price":2100.0,"currency_code":"USD","in_stock":true},{"title":"100","offer_id":51750044008770,"sku":null,"price":3900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/5376\/6978\/files\/rough-spinel-gemstones-min.jpg?v=1767075954","url":"https:\/\/www.bullvendors19.com\/products\/50-to-100-carats-parcels-of-rough-rare-indicolite-blue-spinels-training-rough-material","provider":"Bull Vendors 19","version":"1.0","type":"link"}