This beautiful sapphire comes from Gombe, Nigeria. The Gombe region has recently begun producing limited numbers of bright yellow and yellow-blue particolored sapphire. This gem has been most likely been subject to low-temperature heat treatment. The original piece of rough had a small zone of blue that I cut away to create this pure yellow finished gemstone. It has remarkable clarity–there is some internal crystal strain and one tiny remnant of a feather visible in this macro image, but they are not visible without a 10x loupe, and even then they are difficult to spot.
Faceted in our custom version of the classic diamond round brilliant design and cut to “hearts and arrows” precision, this sapphire weighs 2.01 carats and measures 6.9 x 5.1 mm. It would make a superb center stone for a unique engagement ring.