{"id":2635,"date":"2026-05-09T08:29:37","date_gmt":"2026-05-09T00:29:37","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=2635"},"modified":"2026-05-09T08:29:40","modified_gmt":"2026-05-09T00:29:40","slug":"where-is-the-origin-of-indian-stone","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/ru\/2026\/05\/09\/where-is-the-origin-of-indian-stone\/","title":{"rendered":"\u041e\u0442\u043a\u0443\u0434\u0430 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0438\u043d\u0434\u0438\u0439\u0441\u043a\u0438\u0439 \u043a\u0430\u043c\u0435\u043d\u044c?"},"content":{"rendered":"

Indian Stone (Gabbro for Precision Platforms \/ Indian Black) is primarily sourced from the southern Indian states of Karnatakdhra Pradesh, with a small amount coming from Tamil Nadu.<\/p>\n\n\n\n

I. Core Mining Areas (High-Quality Gabbro, Pure Black Fine Grain)
Karnataka \u2014 hamrajnagar
The main production area for the industry-recognized highest grade “Indian Black” (Absolute Black Granite \/ Gabbro).
Fine grain, pure black with no white spots, unifom structure, and minimal internal stress, making it the first choice for precision platforms \/ CMM bases.
Representative mining areas: Kothalwadi, Nanjang(near Mysore).
Andhra Pradesh \u2014 Chimakurthy \/ Ongole
Famous production area for “Black Gold” (Gabbro), with some mining sections sharing theme origin as Indian Stone used for precision platforms.
Pure black base, extremely fine gold specks (magnetite \/ ilmenite), high density, and good polish.
Appoximately 350km from Chennai (Madras), which is a major export port.<\/p>\n\n\n\n

II. Other Important Production Areas (Slightly inferior performance, slightly lower price)
Taml Nadu \u2014 Onnur: Fine-grained black granite with good luster; stability is slightly lower than that of Karnataka mines.
Rajasthan \u2014 Udaipur: “R Black,th trace impurities; mostly used for architectural decoration, rarely for ultra-precision platforms.<\/p>\n\n\n\n

III. Relationship between Origin and Quality
Karnataka (Chamrajn): \u2605\u2605\u2605\u2605\u2605 Top-tier, comparable to Jinan Green; the first choice for Grade 00 \/ Grade 000 platforms.
Andhra Pradesh (Chimaurthy): \u2605\u2605\u2605\u2605\u2606 High-end, pure black fine grain, high cost-effectiveness; mainstream for Grade 00 platforms.
Tamil Nadu \/ Rajasthan: \u2605\u2605\u2605\u2606\u2606 Midto-high-end, with color differences \/ trace impurities; suitable for general precision platforms.<\/p>\n\n\n\n

IV. Supplementary Notes
Commonly known in the market as “Indian Stone,” “Indian B” and “Black Gold,” these are all gabbro mineralogically; quality differences result solely from different origins \/ mining sections.
Over 90% of Indian Stone imported by China fon platforms comes from Karnataka and Andhra Pradesh.<\/p>\n\n\n\n

\"\"<\/figure>","protected":false},"excerpt":{"rendered":"

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