Figure 1. The 14.77 ct composite ruby rough was partially polished on opposite sides where natural ruby slabs were pasted to a synthetic ruby crystal. Notice the hexagonal zoning on the polished ...

The gemological properties of a new ruby imitation, produced by dyeing natural colorless to pale-colored corundum, are described. Microscopic and spectroscopic examination revealed a number of ...

The ruby seed used to grow the stone in situ can be created from waste gemstone materials, something we have plenty of. The ...