Is Tungsten magnetic? I dropped my boyfriends ring (made of Tungsten) down the place in the doorframe where the door closes, not knowing there was actually a hole there.
Use commas to separate things in a list or series. If you have a series of three or more items, use commas to separate each item. Do not place commas before or after the list or series. Do not use commas when all the items in a series are linked by and, or, or nor.
When you indicate month, day, and year, put a comma after the day and after the year (unless some other punctuation mark, like a period or question mark, follows the year). Include these commas even if the month-day-year expression serves as an adjective: On July 1, 2006, the committee dismissed the employee.