Water it. Only after the weathered color is uniform can it be placed for collection.
Indoor stone raising. Water the tortoiseshell frequently to keep it moist and energetic.
Conditional oil raising is not suitable for long-term oil raising. Vaseline, oil wax, polishing wax, etc. Dip flannel in wax and wipe it gently with oil. Mineral wax can also be heated into liquid and smeared on stone products.
Damaged tortoise shells should be polished and trimmed with diamonds, and then the original stone should be placed on the stone shelf in the open air, and the damaged part of the stone will naturally be weathered and discolored.