Ancient Egyptians believed this stone could treat hysteria and reduce inflammation. They also placed it inside tombs. The two substances are identical, and we use the terms interchangeably. This milky green quartz has flecks of darker color caused by mica crystals in the stone. The ancient Chinese valued good quality aventurine even above nephrite jade, and often carved it into vases and other ornamental objects.
Softer stones carve more easily, but can also be scratched more easily if subjected to daily abuse.
We have attempted to consolidate several of the more reliable sources. The stone which appears first in each list is the most commonly used as that month's birthstone. Wedding Cake topper, knife, server, goblets, etc.