Buy Casting Grain

Casting grains are useful for creating precious metal alloys with the exact characteristics your jewelry needs – like scratch resistance, tarnish resistance, and color.

Casting Grain for Jewelers

At Manhattan Gold & Silver, we know how important casting grain is to every jeweler’s workflow. Whether you’re fabricating a custom engagement ring, repairing a client’s heirloom piece, or producing a full collection, your results depend on starting with high-quality metals. That’s why we supply professional jewelers and manufacturers with premium casting grains in gold, silver, platinum, and palladium.

Casting grain allows you to create precious metal alloys with the exact properties your jewelry demands – from durability and scratch resistance to tarnish resistance and unique coloring. Since MGS has 40 years of experience working with other businesses, you can trust that our inventory is tailored to the needs of professional jewelers.

Types of Casting Grains

We offer four types of casting grains:

Gold casting grain – available in pure form for creating custom karat alloys to meet exact specifications. Ideal for jewelers looking for full control over color and hardness

Silver casting grain – A cost-effective and versatile option, perfect for both fine jewelry and larger production runs.

Platinum casting grain – Available in pure form or in carefully balanced alloy combinations. These alloys provide different working properties, such as improved hardness or better flow during casting, to suit your design needs.

Palladium casting grain – Lightweight, durable, and hypoallergenic, making it a popular choice for modern jewelry designs.

All our casting grain is refined to the highest purity standards to give you consistent results every time you melt and pour.

Why Jewelers Select Manhattan Gold & Silver

Exclusive Johnson Matthey Materials

We are the only refinery in NYC offering Johnson Matthew jewelry-making materials, a name trusted worldwide for quality.

Tailored for Professional Use

Every product we sell is selected with jewelers and manufacturers in mind.

Trusted Refinery Expertise

With over 40 years in the Diamond District, we understand the demands of professional jewelers and provide consistent, reliable supply.

Quick Tips for Jewelers

Alloy selection matters – Platinum alloys with ruthenium, iridium, or cobalt each behave differently during casting and finishing. Choose based on the hardness and workability your project requires.

Order a little extra – It’s always wise to buy more casting grain than the exact weight of your final design. Extra grain ensures smooth casting and helps cover losses during polishing and finishing.

Consistency counts – For large production runs, source all your casting grain from the same batch to ensure uniform color and properties across every piece.

Frequently Asked Questions

What’s the best alloy for platinum casting?

It depends on your project. Platinum-ruthenium is highly durable for daily wear jewelry, platinum-cobalt has excellent flow for detailed casting, and platinum-iridium offers a balance of strength and malleability.

Can I mix my own alloys with your casting grain?

Yes! Our pure gold, silver, platinum, and palladium casting grain allow you to create custom karat blends and alloys specific to your brand’s needs.

How much casting grain should I buy for a project?

A good rule of thumb is to purchase at least 10-15% more grain than the final piece requires. This covers metal lost during spruing, polishing, and finishing.