1 Either an acute injury near the nail or anything that causes the nail to be damaged repetitively (such as playing soccer) can also cause an ingrown nail.  If a member of your family has an ingrown toenail, then you are more likely to develop one, too.
The troy ounce (symbol and abbreviation: ozt) is a non-SI unit of mass commonly used to gauge the weight of precious metals. One troy ounce (ozt) = 31.1034768 grams (g) = 1.09714286 ounces (oz) = 480 grains (gr).
The Meaning of Karat Numbers. Karat is a measure of gold content. The karat of a gold item is calculated by dividing the mass of pure gold in it by its total mass and multiplying the result by 24. Thus, a piece that contains 58% gold is approximately 14 karats (0.58 x 24).arat is a measure of gold content. The karat of a gold item is calculated by dividing the mass of pure gold in it by its total mass and multiplying the result by 24. Thus, a piece that contains 58% gold is approximately 14 karats (0.58 x 24).