Quarterly Crystal: Diamond in Diamond
Examination of a South African diamond reveals an eye-visible diamond inclusion.
Brazilian Watermelon Tourmaline with Iris Effect
A pair of watermelon tourmaline slices from the Cruzeiro mine displays a rainbow of colors.
Rainbow Rays in Rainbow Lattice Sunstone
Colorful rays of light are observed in an Australian rainbow lattice sunstone.
Pink and Red Epidote in Quartz
“Firework” sprays of hot pink to red epidote crystals are discovered in two rock crystal quartz cabochons.
Trigon Party on a Diamond
A cluster of trigons is observed on the surface of a 1.01 ct natural diamond.
“Cyber” Butterfly
Examination of a purple sapphire reveals a zigzag-patterned fingerprint and negative crystal resembling a butterfly.
Fluorite in Brazilian Alexandrite
An octahedral fluorite crystal is observed in Brazilian alexandrite.
Hairlike Inclusions in Benitoite
Whitish hairlike inclusions are present throughout a 3.55 ct benitoite.
Iridescent Healed Fissures in Epidote
Illumination under the microscope reveals iridescent healed fissures in a yellowish brown epidote.
Parasite Channels in a Saltwater Natural Pearl
A Y-shaped channel with finer branches indicates parasitic activity in a natural saltwater pearl.
Radial Limonite in Sapphire
Radial limonite displays bright interference colors in a surface-reaching fracture of a violet sapphire.
Tourmaline Inclusion with Included Crystals in Kashmir Sapphire
A tourmaline inclusion in a Kashmir sapphire contains “daughter” crystal inclusions.