20mm Black STAR DIOPSIDE Polished Cabochon Gem 4-Point Star Sri Lanka for sale

  • $33.50$50.00
  • Mineral: Diopside
  • Product Code: EB0517DSTAR4
  • Availability: In Stock

Here is a superb black star diopside gemstone weighing 21 carats. The oval-cut cabochon is jet black, and has been polished to a high luster. The 4-point star is easily visible in the sun or with a bright flashlight. This gem, which is sometimes called star diamond, is 100% natural, and has not been treated or enhanced in any way. The inclusions which produce the star are probably magnetite, because the stones are slightly magnetic.  There are two directions of needle alignment, thus producing a four ray star. The star is often strong and straight in one direction and weaker and slightly wavy in the second. A thin white or silver star on a jet black cabochon is characteristic of star diopside.