Possible Clues:

• Metallic gray
• Fine material cut, so lustrous
• Like chinchilla fur
• Epithet for the moon
• At the bottom it's extremely sort of white
• Whitish; gently ringing
• Having a white lustrous sheen, like the Spire
• Elementary description of moon having clear rings?
• A little fossil, very lustrous white
• Greyish-brown European moth