The phenomenon of "total internal reflection" occurs in option 3, the sparkling diamond. Total internal reflection happens when light passes from a denser medium to a less dense medium and strikes the boundary at an angle greater than the critical angle. In the case of a diamond, which has a high refractive index, light entering the diamond from the air can undergo total internal reflection.

Option 1, glowing tube light, does not involve total internal reflection. Tube lights emit light due to the excitation of gas molecules inside the tube, and the light travels through the tube without undergoing reflection.

Option 2, light passing through a lens, may involve some refraction as light passes through the lens but does not typically involve total internal reflection.

Option 4, twinkling stars, is not related to total internal reflection either. The twinkling of stars is caused by atmospheric turbulence, which causes the starlight to scatter and appear to flicker.

Therefore, the correct answer is option 3, sparkling diamond, where total internal reflection can occur due to the high refractive index of diamonds.