The Lake Superior agate is a type of agate stained by iron and found on the shores of Lake Superior. Its wide distribution and iron-rich bands of color reflect the gemstone's geologic history in Minnesota, Wisconsin, and Michigan. In 1969 the Lake Superior agate was designated by the Minnesota Legislature as the official state gemstone.The gemstone comes in various sizes. The gas pockets in which the agates formed were primarily small, about 1 cm in diameter. A few Lake Superior agates have been found that are 22 cm in diameter with a mass exceeding 10 kilograms. Very large agates are extremely rare. It is predominantly brown, with layers of creamy browns,whites,reds, blacks and grays. Some may include layers of yellow ochre, gold, scarlet and red. Agate is sometimes called the earth rainbow because, in its various forms, the concentric bands in nature form nearly every color the earth can produce, including a colorless form. See images above for random examples.*NOTE: the above images are of samples misted with water to highlight details. Not all agates will be banded.This bag weighs 8 oz. and will contain an average of 6-10 pieces (larger size-avg 1-1 1/2"). Great refill for any beginner-novice tumblers, i.e., NSI, National Geographic, Dr. Cool, Smithsonian, Elenco & Pro Models...
- Item ID: B07BZT1BHR
- Brand: Rockhound's First Choice Lake Superior "LARGE SIZE" Agates
- ASIN: B07BZT1BHRPart No: LS