100 gram gold bar

Expert Notes

The 100 gram gold bar gives investors efficient exposure to physical gold with a low premium per ounce and substantial metal content. Each bar contains 100 grams of .9999 fine gold, equal to 3.21507 troy ounces. These secondary market bars are produced by various globally recognized refiners. On this page, you can compare prices in real time to identify the cheapest 100 gram gold bar and the lowest premiums offered today.

Investing in a 100 gram gold bar is a cost-effective way to build long-term wealth in physical bullion. This size strikes a practical balance between affordability and significant gold weight, making it a favorite among U.S. gold investors and bullion buyers seeking efficient stacking and easy storage.

Secondary Market 100 Gram Gold Bar

Most minted 100 gram gold bars display the refinery hallmark, the weight “100 g,” the fineness “999.9,” and often a unique serial number. Some manufacturers include an assayer’s signature or integrated anti-counterfeit elements such as micro-engraving or digital verification.

Designs vary by mint and may feature a repeating logo pattern, a textured field to deter tampering, or a plain, matte finish on cast bars. Many bars ship sealed in tamper-evident assay cards listing the same serial number as the bar, supporting quick authentication.

Special features may include proprietary security technology such as surface mapping verification (PAMP Veriscan) or optically variable elements (Argor Heraeus Kinebar) on select issues. As investment bullion, 100 gram gold bars typically have no fixed mintage limit; production responds to market demand.

Intended Use

Originally designed as investment units, the 100 gram gold bar serves private investors, wealth managers, and dealers who value recognized purity, portability, and liquidity. The format represents 1/10 kilogram, as is widely accepted for buybacks and trading. Many bars from approved refiners meet IRS requirements for inclusion in self-directed precious metals IRAs when held by a qualified custodian. Always confirm eligibility with your custodian before purchase.

Highlights

• Metal: Gold, minimum .9999 fineness
• Weight: 100 grams, 3.21507 troy ounces
• Obverse typically shows hallmark, weight, purity, and often a unique serial number
• Reverse commonly shows a repeating mint logo or plain field, depending on brand and method
• May arrive new or from the secondary market; minor handling marks do not affect metal value
• Some bars may come sealed with an assay certificate for verification

Why Choose a Secondary Market 100 Gram Gold Bar?

Secondary market bars have been previously owned and resold, often as dealer buybacks. Reputable dealers verify weight and purity and test authenticity before listing. Because production costs and packaging premiums are already absorbed, buyers often access a lower gold price per ounce compared to brand-new releases, while retaining the same metal content and recognized hallmarks.

Specifications and Brands You May See

Because this listing is dealer’s choice, the brand and appearance can vary by inventory. Common producers include PAMP Suisse, Valcambi, Perth Mint, Credit Suisse, and Argor-Heraeus, along with other LBMA Good Delivery refiners. Dimensions differ slightly by mint and manufacturing style; minted 100 gram bars typically measure roughly 45 x 26–27 mm with a slim profile, while cast bars are often smaller in length and width but thicker.

Common Questions About 100 gram gold bar