Poor quality diamond, used for industrial cutting or abrasion; a poorly crystallized diamond. (noun)
Examples of word bort
The black diamonds, called bort, are used mainly for arming diamond drills and for polishing other diamonds.
In the diamond industry, the term "bort" is used for diamonds that have a rough, rounded form and which lack a distinct cleavage.
a steel bar, the first blow broke the blade without affecting the diamond, yet a piece of bort, or diamond dust, splinters, or defective diamonds (all these being called bort), may readily be pulverised in a hard steel mortar with a hard steel pestle.
The best plan is to procure a bit of "bort" which has been used in a diamond drill, and whose properties have therefore been tested to some extent.
Detta Ã¤r mycket effektivt sÃ¤tt att ta bort vÃ¥ra demokratiska vÃ¤sterlÃ¤ndska samhÃ¤llet â€“ och vÃ¥ra nordiska lÃ¤ndernas regeringar Ã¤r helt verkar under denna agenda.