Casting grain Metal color:
Yellow Liquidus temperature:
1,945°F (1,063°C) Cast temperature:
2,100°–2,150°F (1,149°–1,177°C) Density:
19.32 Country of origin:
Please choose your quantity below:
(Measurements above are in inches)
The term "conflict diamonds" refers to the diamond rough used to fund violent criminal insurgencies in several African countries.
The Kimberley Accord is a compact that regulates the sale and transfer of diamond rough to prevent the human destruction that conflict
diamonds cause. Rio Grande has long asked our suppliers to provide documentation proving the safe origin of the diamonds we buy.
You can be assured every diamond you buy from Rio Grande is certified “conflict-free” by both our strict standards and the Kimberley Accord.
Our Rio Graduate Gemologists are ready to help you match stones or select a specific quality. Please let them know how they can help you.
This pure 24-karat yellow gold casting grain delivers excellent results, whether used directly or combined with a master alloy to create the karat of gold that the piece requires. Casting metal, because it comes ready to melt and pour into your mold, is fast and efficient to use and, because it is professionally produced, you can count on consistent, repeatable quality and composition over time.
Sold by the pennyweight (dwt.).
2017-2018 Gems and Findings & Display and Packaging Catalog p.14
please note: • Casting temperatures are approximate; adjust for your particular alloy and application. • IMPORTANT: As a supplier to the jewelry trade, Rio Grande strongly discourages any medical use of our fabrication metals. Your safety is important to us; therefore, we do not accept orders of fine gold for any purpose that includes ingesting, injecting, implanting or applying it topically. Do not use Rio Grande fine gold for colloidal purposes. • For more information regarding the use or composition of this material, please refer to the reference sheet provided below.
How To Determine Metal Weight for Wax Trees
Knowing how to determine the correct metal weight for each wax tree before you cast ensures that you melt the right amount of metal for your cast, making your casting process more cost-effective and more reliable.
First, weigh your wax models along with main and gate sprues. Then add an additional 10% to account for your button.
Multiply that total by the specific gravity of the metal you're casting (see table above for a general guideline).
Example: For a 5-gram wax model, add 0.5 (10% of 5g) to get a total wax weight of 5.5g. For a 14KY gold casting, multiply 5.5g x 13.07 s.g. The amount of 14KY gold needed for this tree is 71.89 grams.
Karating Made Easy
Create the karat value you want using the tables below. For a new alloy, begin with 24-karat (pure gold) and reduce to the karat value you need. If you have a lower-karat alloy already on hand, use the appropriate table to either raise or lower its karat value to meet your needs.
Desired Karat Value
Starting Karat Value
Desired Karat Value
Starting Karat Value
To calculate your karat weights, multiply the pennyweight of the gold you're working with by the factor (from the tables above) for the karat you want to create. See examples below.
To make 14K alloy from 8 dwt. of 24K: 8 × .714 = 5.71 dwt. of alloy.
To make 18K alloy from 15 dwt. of 14K: 15 × .667 = 10 dwt. of 24K.
As a wholesale supplier to jewelers and other industry professionals, Rio Grande wants to avoid presenting wholesale pricing to retail consumers. In addition, the U.S. Patriot Act requires all suppliers of precious metals to maintain full contact information for all of its customers.
Please be aware that we vigilantly protect your account information—it will never be shared or sold to any third party for any reason, ever.
The benefits of having a dedicated account with us include:
See current pricing on all products based on published daily metal markets.
Access and print your order history and invoices any time you need them.
Create and update a 'wish' list of products you have selected but are not yet ready to purchase.
Manage and update your account information, including contact and payment information, at your convenience.