Blog & Industry Notes

Practical notes on silica sand grades, kaolin clay, quality, certifications, latest trends, and much more.

Silica Sand Jul 2026

Why Fe₂O₃ PPM Matters in Glass-Grade Silica

Iron content drives colour defects in float and solar glass. Here is how multi-stage magnetic separation brings Fe₂O₃ as low as 100 PPM.

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Kaolin Clay Jul 2026

Hydrous vs Calcined Kaolin: Choosing the Right Grade

Brightness, mesh size, and firing behaviour decide ceramics, paper, and coatings performance. A quick buyer’s guide to SS grades and micronized powder.

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Export Jun 2026

FOB, CIF, EXW options from Mundra & Kandla: What Export Buyers Should Know

Lead times, packaging options, documentation, and Incoterms that keep industrial mineral shipments moving on schedule.

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Quality Jun 2026

ISO 9001:2015 and In-House Lab Testing at Stone Skipper

How batch-level QC, COA readiness, and NABL-aligned third-party reports support long-term supply partnerships.

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Aug 2026

5 acronyms. One question buyers rarely get a straight answer to: what do they actually mean?

Certifications are easy to list on a website and hard to explain honestly. Here's what each one on ours actually verifies plainly:

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Blog & Industry Notes

Why Fe₂O₃ PPM Matters in Glass-Grade Silica

Hydrous vs Calcined Kaolin: Choosing the Right Grade

FOB, CIF, EXW options from Mundra & Kandla: What Export Buyers Should Know

ISO 9001:2015 and In-House Lab Testing at Stone Skipper

5 acronyms. One question buyers rarely get a straight answer to: what do they actually mean?

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