Sapphires from Anakie, Australia: A Closer Look at Blue, Yellow, Green and Bicolor Sapphires
Some of the studied samples from Australia. Colors ranged from blue to dark blue, yellowish green, yellow, and greenish yellow to...
DECEMBER BIRTHSTONE
TURQUOISE BIRTHSTONE MEANING & HISTORY
Turquoise is a semi-translucent to opaque gem that ranges from blue to green...
JULY BIRTHSTONE
Ruby is the July birthstone – and it’s one of the most coveted of gems. The name is derived from the...
Unknown Dendritic Inclusions in Sapphire
Left: When the pinkish purple sapphire was viewed under darkfield illumination, the only inclusions visible underneath the table were zircon crystals...
Trapiche-Type Emeralds from Pakistan
Growth pattern observed in a trapiche-type emerald from Swat, Pakistan. The slice shows two colorless cores and two intermediate lighter green...
Dramatic Color Zoning in Alexandrite
Figure 1. The 8.55 ct alexandrite in daylight (left) and incandescent light (right). Photos by Nuttapol Kitdee.
Blue Inclusion in Rock Crystal Quartz
Figure 1. This 118.16 ct polished modified cube of rock crystal quartz contains an interesting tuft of blue needles, which may...
Unusual Violet Maxixe Beryl
Figure 1. This 26.72 ct Maxixe beryl has an unusual violet color. Photo by Diego Sanchez.
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Tree in Rock Crystal Quartz
Figure 1. This 80.60 ct rock crystal quartz cabochon contained an interesting tree-like metal sulfide inclusion. Photo by Robert Weldon.
MARCH BIRTHSTONE
Aquamarine and bloodstone, March’s two birthstones, are very different when it comes to appearance, but they share a similar reputation for...
