In physical gold investing, choosing the right gram size is not just about “how many grams to buy.” It directly affects liquidity, transaction cost, and capital efficiency.

Market data in 2025 shows that premium rates and liquidity can differ by more than 10 times depending on product size. For beginners, choosing the right gram size is the first important step in gold investing.

1. Small Sizes (1g, 5g): High Flexibility, Higher Unit Cost

Best for: Beginners with a budget under 5,000 RMB

Main advantage: Easy to sell, widely accepted

Typical products: 1g gold “beans,” 5g gold bars

Pros

• Highly accepted by the market. In 2025, most major gold shops and platforms responded to 1g buyback requests within 1 day.
• Can be sold in small portions, which is useful in emergencies.
• Available in many festive or collectible forms, making them suitable for both collecting and investing.

Cons

• High premium per gram:
• 1g gold beans: 12%–15%
• 5g gold bars: 8%–10%
• Packaging, processing, and logistics costs take up a larger share, reducing upside potential.

2. Medium Sizes (10g, 20g): Balanced Cost and Liquidity

Best for: Stable beginners with a budget of 10,000–50,000 RMB

Main advantage: Lower premium, mature buyback channels

Typical products: 10g gold bars, 20g gold bars

Pros

• In 2025, the premium for 10g gold bars was around 5%–7%, nearly half that of 1g gold beans.
• Major banks and gold dealers support buyback within 2 days.
• Standardized products are easier to store, insure, and pass on.

Cons

• Less flexible than small sizes; you cannot sell part of the bar.
• Avoid unusual sizes such as 15g, which may have 30% weaker liquidity and 2%–3% higher buyback discounts.

3. Large Sizes (50g, 100g): Lowest Cost, Lower Liquidity

Best for: Investors with more than 50,000 RMB and a long-term holding horizon

Main advantage: Lowest unit premium, suitable for strategic allocation

Typical products: 50g and 100g standard gold bars

Pros

• 100g gold bars have the lowest premium, around 3%–5%
• Best unit price per gram
• Suitable for lump-sum investment, family gold reserves, and long-term preservation of value

Cons

• Not convenient for small cash needs; usually must be sold as a whole bar
• Buyback often requires institutional buyers, with a 3–5 day settlement cycle
• Not ideal for emergency liquidity

4. Practical Buying Advice for Beginners

• Prefer standard gram sizes from banks, Shanghai Gold Exchange-authorized brands, or top-tier gold dealers, such as 10g, 50g, or 100g bars.
• Avoid niche sizes, as they can be harder to resell.
• Before buying, check the buyback policy:
• Is buyback supported?
• What is the fee?
• Are invoice and packaging required?
• Do not start with commemorative bars or shaped jewelry. These often have high craftsmanship premiums and poor resale value.

Conclusion

Gold investing looks simple, but the details matter.

Choosing the right gram size is the first step in finding a balance between liquidity and cost. If you only watch the gold price and ignore the transaction structure, beginners often end up losing money.

A good rule of thumb:

Whether gold is easy to sell matters more than whether it looks cheap when you buy it.