Among these outcrops 20 have yielded biological inclusions comprising the oldest representatives of several recent families of terrestrial arthropods. Source: Internet
After color follows clarity: similar to diamonds, a clear stone will command a premium, but a ruby without any needle-like rutile inclusions may indicate that the stone has been treated. Source: Internet
All natural rubies have imperfections in them, including color impurities and inclusions of rutile needles known as "silk". Source: Internet
A metal-matrix composite with discrete inclusions of low-melting material is another option; the inclusions either melt before the jet reaches the well casing, weakening the material, or serve as crack nucleation sites, and the slug breaks up on impact. Source: Internet
American Express doesn’t have explicit epidemic inclusions (or exclusions), but cardholders might have luck claiming reimbursement by getting a doctor’s note stating that “a covered trip is medically inadvisable.” Source: Internet
A gem graded none on the enhancement scale may still exhibit visible inclusions. Source: Internet