at a magnificent Burma Ruby ring
at a mgnificent Blue Sapphire Ring
inside a Green Sapphire
at a Star Ruby
inside a Blue Star Sapphire
inside a Padparasha Sapphire
at twinning planes in a Ruby
at a Black Sapphire
at stress patterns in a heated Blue Sapphire
at stress patterns in a fracture of an untreated Blue Sapphire
at inclusions in a Blue Sapphire
at fluid inclusions in a Blue Sapphire
inside a Mong Hsu Myanmar (Burma) Ruby
inside a thermally treated Ruby
inside a thermally treated Sapphire
a large graphite crystal inside a thermally treated Sapphire
inside a thermally treated Sapphire from Sri Lanka
inside a thermally treated Sapphire cab from Sri Lanka
at negative crystals in a Green Sapphire
at color zoning in a Blue Sapphire
inside a synthetic Kashan Ruby
inside a synthetic Ramaura Yellow Sapphire
inside a synthetic Verneuil Blue Sapphire
inside a synthetic Knischka ruby: platelets and bubbles
inside a synthetic Knischka ruby: gas bubbles and flux lumps
inside a synthetic Knischka ruby: multi-phase negative crystals
inside a synthetic Chatham ruby: flux remnants
inside a synthetic Chatham ruby: vitreous flux relics
inside a synthetic ruby: Sandmeier-Plato striations