A *traditional diya-shaped Urli bowl* is a unique fusion of two iconic elements from Indian culture: the *Urli* and the *diya* (a small oil lamp). The bowl itself retains the characteristic shallow, wide shape of a typical Urli but is designed with the contours of a traditional diya. Instead of being purely circular, the bowl may have a slightly deeper center, resembling the shape of a diya's flame holder, making it both functional and ornamental.

In its traditional form, this kind of Urli bowl is often crafted from materials like brass, copper, or bronze, lending it an antique charm. It’s typically used during festivals or religious ceremonies, filled with water and floating flowers, or with oil and a wick to serve as a floating lamp. 

The diya shape adds an extra layer of symbolism to the Urli.

When using a brass Urli bowl, there are a few precautions to keep in mind to maintain its beauty and functionality:

1. **Avoid Long Exposure to Water**: Brass is a metal that can tarnish or corrode over time when exposed to water for extended periods. If you're using the Urli bowl to hold water and floating flowers, it's best to change the water regularly to avoid any build-up of moisture, which can lead to discoloration.

2. **Clean Gently**: Brass can tarnish or lose its shine with frequent use. To clean, avoid harsh chemicals or abrasive scrubbers. Instead, use a soft cloth or sponge with a mild soap solution. For polishing, you can use a brass cleaner or a natural method like lemon and baking soda, but do this sparingly to avoid damaging the metal.

3. **Keep Away from Humid Environments**: Excessive humidity can encourage oxidation and tarnishing of the brass. If you’re placing the Urli bowl outdoors, ensure it's in a sheltered area where it’s not exposed to rain or high moisture.

4. **Handling with Care**: Brass is relatively sturdy, but it can still be scratched or dented if handled roughly. When moving or cleaning the bowl, lift it gently by its edges and avoid dropping it.

5. **Avoid Chemicals or Abrasives**: If you're using the Urli for lighting oil lamps or candles, ensure that no petroleum-based products come into contact with the brass. Harsh chemicals or abrasives can damage the finish or cause corrosion.

6. **Dry Thoroughly**: After using the Urli, especially when it holds water or oil, dry it thoroughly with a soft cloth before storing it or leaving it out for further use. This helps prevent water spots or tarnish buildup.

7. **Storage**: When not in use, store your brass Urli in a dry place, ideally covered with a soft cloth or in a box to protect it from dust and dirt.

Following these precautions can help preserve the brass Urli’s lustrous appearance and ensure it remains a beautiful and functional centerpiece for years.