When collecting yellow crystals, consider factors such as color, clarity, and cut. The color can vary from pale yellow to intense golden hues, so choose according to personal preference. Clarity refers to the absence of flaws or inclusions, while the cut enhances the crystal’s beauty. To care for yellow crystals, gently clean them with warm soapy water and a soft brush, avoiding harsh chemicals and extreme temperatures. Store them in a cushioned box or pouch to prevent scratching.