Pearl color is an important factor influencing pearl value. and is affected by the nacre color of the shell in Hyriopsis cumingii. Coproporphyrinogen-III oxidase (CPOX) is a key enzyme in porphyrin synthesis. and porphyrins are involved in color formation in different organisms. https://safeersappliancers.shop/product-category/westin-cache-ext0011268-80cm-canopy-cooker-hood-stainless-steel/