Figure 61. Five unheated Colombian sapphires, ranging from 0.41 to 3.65 ct. Photo by Diego Sanchez.
October’s birthstone, the opal, symbolizes faithfulness and confidence. When light hits the sphere structures in opal, the colors of…
Peridot is the rare gem-quality variety of the common mineral olivine, which forms deep inside…
We are proud to announce that Achikian Goldsmiths will be moving to Pleasant Street (right…
Ruby is the red variety of the mineral corundum, colored by the element chromium. All…
Pearls are the only gemstones made by living creatures. Mollusks produce pearls by depositing layers…