Refine Gold Like a Pro ? With Borax (Sodium Borate) Our high-purity Borax (Sodium Borate) is a proven and effective fluxing agent for melting and refining gold, silver, and other precious metals. This 8 oz jar is ideal for jewelers, metal casters, prospectors, and small-scale refiners who want a clean, high-yield melt every time. ? Why Use Borax in Gold Refining? Fluxing Agent Borax melts and combines with impurities and metal oxides during the smelting process, forming an easily removable slag that leaves behind clean, pure metal. Lowers Melting Point Borax significantly reduces the melting temperature of gold ore and concentrates, making the refining process more energy-efficient and accessible ? even with small furnaces or torches. Oxidation Protection Forms a protective layer over molten metal to prevent oxidation and metal loss during heating. Essential in the Borax Method Used in mercury-free gold refining, especially in artisanal and small-scale mining (ASM). It?s a safer alternative to toxic chemicals while still producing high-purity gold. ? Includes: (1) 8 oz Resealable Jar of Borax Powder 99.9% Pure Technical/Industrial Grade Fine, easy-to-melt granules ?? Always use in a well-ventilated area with appropriate protective equipment. Not for food, drug, or cosmetic use. Store in a cool, dry place.