{"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\/fr\/2026\/05\/09\/where-is-the-origin-of-indian-stone\/","title":{"rendered":"D'o\u00f9 provient la pierre indienne ?"},"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":"

La pierre indienne (gabbro pour plates-formes de pr\u00e9cision \/ \u201c Indian Black \u201d) provient principalement des \u00c9tats du sud de l\u2019Inde, notamment du Karnataka et du Pradesh, une petite partie provenant du Tamil Nadu. I. Principales zones d'extraction (gabbro de haute qualit\u00e9, noir pur \u00e0 grain fin) Karnataka \u2014 Hamrajnagar : principale zone de production du \u00ab noir indien \u00bb (granit noir absolu \/ gabbro) de la plus haute qualit\u00e9, reconnu par l'industrie. Fin\u2026<\/p>","protected":false},"author":1,"featured_media":2639,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[35],"tags":[],"class_list":["post-2635","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"taxonomy_info":{"category":[{"value":35,"label":"NEWS"}]},"featured_image_src_large":["https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/05\/\u5fae\u4fe1\u56fe\u7247_20230324153508-1024x768.jpg",1024,768,true],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/fr\/author\/jtlcnc\/"},"comment_info":0,"category_info":[{"term_id":35,"name":"NEWS","slug":"news","term_group":0,"term_taxonomy_id":35,"taxonomy":"category","description":"","parent":0,"count":311,"filter":"raw","cat_ID":35,"category_count":311,"category_description":"","cat_name":"NEWS","category_nicename":"news","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2635","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/comments?post=2635"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2635\/revisions"}],"predecessor-version":[{"id":2638,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2635\/revisions\/2638"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/2639"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=2635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=2635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=2635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}