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corundum rough price Manufacturers

I have found results from400+products and200+suppliers aboutcorundum rough price

Luoyang Weixiang Abrasives Co., Ltd.mic-icon
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F12-F240 Brown Corundum for Abrasives and Refractories

F12-F240 Brown Corundum for Abrasives and Refractories

US$750.00-790.00
10 Tons(MOQ)
Sample Available
High Purity White Corundum 220#-240# for Abrasives and Polishing

High Purity White Corundum 220#-240# for Abrasives and Polishing

US$985.00-1,030.00
5 Tons(MOQ)
Sample Available
China Manufacturer Supply Black Corundum 120# 150# for Abrasives

China Manufacturer Supply Black Corundum 120# 150# for Abrasives

US$650.00-720.00
1 Ton(MOQ)
Sample Available
F24 Brown Corundum for Making Grinding Wheels Sales

F24 Brown Corundum for Making Grinding Wheels Sales

US$750.00-790.00
10 Tons(MOQ)
Sample Available
F24 High Bulk Density Brown Corundum for Making Grinding Wheels

F24 High Bulk Density Brown Corundum for Making Grinding Wheels

US$650.00-790.00
10 Tons(MOQ)
Sample Available
F60 High Bulk Density Brown Corundum for Making Cutting Wheels

F60 High Bulk Density Brown Corundum for Making Cutting Wheels

US$650.00-790.00
10 Tons(MOQ)
Sample Available
High-Hardness White Corundum, Efficient Hardware Grinding and Gemstone Processing

High-Hardness White Corundum, Efficient Hardware Grinding and Gemstone Processing

US$850.00-860.00
5 Tons(MOQ)
Sample Available
High Bulk Density Good Performance Wfa White Corundum

High Bulk Density Good Performance Wfa White Corundum

US$700.00-750.00
10 Tons(MOQ)
Sample Available
High-Purity Single Crystal Corundum, with Outstanding Hardness and Strong Toughness, Is Precisely Ground and Polished

High-Purity Single Crystal Corundum, with Outstanding Hardness and Strong Toughness, Is Precisely Ground and Polished

US$900.00-1,500.00
5 Tons(MOQ)
Sample Available
China Top Quality Brown Corundum for Blasting

China Top Quality Brown Corundum for Blasting

US$650.00-790.00
10 Tons(MOQ)
Sample Available
China Manufacturer Supply Black Corundum 60# 90#

China Manufacturer Supply Black Corundum 60# 90#

US$650.00-720.00
1 Ton(MOQ)
Sample Available
China Manufacturer Supply Abrasive Low Price Black Corundum 16# 60#

China Manufacturer Supply Abrasive Low Price Black Corundum 16# 60#

US$633.00-700.00
10 Tons(MOQ)
Sample Available
China Manufacturer Supply Abrasive Low Price Black Corundum 36#

China Manufacturer Supply Abrasive Low Price Black Corundum 36#

US$633.00-700.00
10 Tons(MOQ)
Sample Available
Brown Emery Powder Corundum Firist Class 220#

Brown Emery Powder Corundum Firist Class 220#

US$1,000.00-1,050.00
5 Tons(MOQ)
Sample Available
China Manufacturer Supply Abrasive Low Price Black Corundum 36# 80#

China Manufacturer Supply Abrasive Low Price Black Corundum 36# 80#

US$633.00-700.00
10 Tons(MOQ)
Sample Available
Low Content Al2O3 Fused Alumina Black Corundum

Low Content Al2O3 Fused Alumina Black Corundum

US$750.00-780.00
5 Tons(MOQ)
Sample Available
Brown Fused Alumina Brown Corundum F36 for Abrasives

Brown Fused Alumina Brown Corundum F36 for Abrasives

US$1,080.00-1,100.00
5 Tons(MOQ)
Sample Available
Coarse Grinding of Low-Cost Cast Iron Parts with Black Corundum Abrasive

Coarse Grinding of Low-Cost Cast Iron Parts with Black Corundum Abrasive

US$720.00-760.00
5 Tons(MOQ)
Sample Available
High Purity Brown Corundum for Metal Surface Rust Removal

High Purity Brown Corundum for Metal Surface Rust Removal

US$650.00-790.00
10 Tons(MOQ)
Sample Available
Brown Corundum Emery Powder Abrasives 240#

Brown Corundum Emery Powder Abrasives 240#

US$1,000.00-1,050.00
5 Tons(MOQ)
Sample Available
White Corundum Powder Contains 99% Alumina

White Corundum Powder Contains 99% Alumina

US$850.00-860.00
5 Tons(MOQ)
Sample Available

Sourcing guidance for Corundum Rough Price

What are the primary factors that determine the price of Corundum Rough?

The price of corundum rough is primarily driven by the 4Cs: Color, Clarity, Carat weight, and Cut potential. For industrial applications (abrasives), the Al2O3 purity (typically >95%) and Mohs hardness (9.0) are the key price drivers. For gemstone-grade rough (Ruby and Sapphire), the saturation of color and transparency significantly impact the valuation. Additionally, the origin (provenance) can create a price premium of 20% to 50% for specific locations like Myanmar or Sri Lanka.

How can I verify the authenticity and quality of Corundum Rough before purchasing?

Buyers should request a Refractive Index (RI) test and Specific Gravity (SG) analysis to distinguish genuine corundum from synthetics or glass. For bulk industrial orders, ensure the supplier provides a Chemical Composition Analysis (XRF). For high-value gemstone rough, it is essential to check for natural inclusions under a loupe and verify if the material has undergone Heat Treatment or Lead-Glass Filling, as untreated 'natural' rough commands a much higher market price.

What technical specifications should be included in a B2B procurement contract for industrial corundum?

Contracts should clearly define the Grit Size (mesh), Bulk Density, and Toughness (friability). Ensure the material meets FEPA or ANSI standards for abrasive applications. It is also critical to specify the maximum allowable impurity levels (such as Fe2O3 or SiO2), as high iron content can affect the performance of grinding wheels or refractory bricks.

What are the common usage scenarios for different grades of Corundum Rough?

Corundum rough is categorized into two main streams: Industrial Grade, used for sandblasting, waterjet cutting, and manufacturing of grinding wheels; and Gemstone Grade, used by lapidaries for faceting rubies and sapphires. A third category, Synthetic/Lab-Grown Corundum, is widely used in the semiconductor industry for sapphire substrates and in watchmaking for scratch-resistant crystals.

Cross-Border Procurement Risks and Strategies for Corundum

How can I mitigate the risk of receiving 'salted' or synthetic material in a bulk rough stone shipment?

To prevent 'salting' (mixing synthetics with natural stones), always use a Third-Party Inspection service (like SGS or CCIC) to perform random sampling at the supplier's warehouse before sealing the containers. For high-value lots, utilize Escrow payment services on Made-in-China.com to ensure funds are only released after the quality is verified by your local gemological lab.

What are the essential international trade compliance steps for importing Corundum Rough?

Check the HS Code (typically 2513.20 for Emery/Natural Corundum) to determine import duties in your country. Ensure the supplier provides a Certificate of Origin and, for gemstone-grade rough, verify compliance with the Kimberley Process-like standards if applicable to prevent 'conflict minerals.' Always confirm if your country requires a Radiation Clearance Certificate for certain mineral ores.

What strategies should be used when negotiating prices with Corundum suppliers?

Negotiate based on Yield Potential rather than just total weight. A 1kg lot with a 30% faceting yield is more valuable than a 2kg lot with a 5% yield. For industrial bulk, request tiered pricing based on annual volume (e.g., 5-10% discounts for orders over 20 tons). Always ask for FOB (Free On Board) pricing to maintain control over your own shipping and insurance costs.

What is the safest method for shipping high-value Corundum Rough internationally?

For industrial bulk, Sea Freight in 20ft containers is the most economical. For high-value gemstone rough, use Insured Air Freight (e.g., Brinks or Malca-Amit) which specializes in secure mineral transport. Ensure the packaging is tamper-evident and that the Commercial Invoice accurately reflects the 'Rough Mineral' status to avoid unnecessary luxury tax delays at customs.

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