For the 'Mini Stilla Rainbow Moonstone Oval Necklace' on Astley Clarke's website, what are the available chain length options and the specific care instructions to ensure its longevity?
Navigate to the Astley Clarke homepage. Go to the 'Jewellery' section. Locate and select the 'Mini Stilla Rainbow Moonstone Oval Necklace'. Expand the product details section. Identify and extract the chain length information. Identify and extract the care instructions.
State that the chain length is 'Adjustable from 16-18 inches'. State the care instructions: 'To maintain the beauty of your jewellery, avoid contact with perfumes, lotions, and harsh chemicals. Clean with a soft, dry cloth.'