they are found in birth stone earins,necklaces,or even brcelets
^^^^^^
Not even rocks.
Rubies may be found in igneous rocks and sometimes sedimentary if it wasn't destroyed.
Rubies are accessed by mining. Some are found embedded in hard rock, as in Afghanistan, some are found loose in gravels, as in Burma.
they are found in Tanzania.
They are not overly rare, no. Rubies are found and mined in many parts of the world.
xenolith
It is a xenolith.
The first rubies were found in the present day area of Myanmar. Rubies can be colored pink to blood red.
As far as I am aware, rubies have been located in Montana and South Carolina, but I have not heard of rubies being located in Idaho.
The history of rubies are Rubies have been found in many places like previously the have been found in Thailand, Nepal, Taiwan, Vietnam, Afghanistan, Pakistan and East Africa. People are still finding them everywhere.
Ruby is a red transparent precious gem stone found in minerals like corundum Al2O3 with small amount of Cr2O3 (crominum oxide) found in tropical regions in Myanmar, Africa,India and Sri Lanka. The most recently found ruby deposit in Myanmar is in Namya (Namyazeik), located in the northern state of Kachin. Rubies have historically been mined in Thailand, the Pailin and Samlout District of Cambodia, Burma, India, Afghanistan, Australia, Namibia, Colombia, Japan, Scotland, Brazil and in Pakistan.
a rockasouraus
For a variety of reasons, most fossils are found in sedimentary rock.
The first rubies were found in the present day area of Myanmar. Rubies can be colored pink to blood red.