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The Regal Collection
OSTROBLUE®
Ostroblue® topaz are amongst the richest, most pristine and intensely blue gemstones in the world. Their striking colors evoke the vibrant blue of the Mediterranean, glistening in the summer sun.


OSTROROYAL®
Ostroroyal® is defined by the magnificence of its royal blue hue. It is a remarkable combination of the brightness of Swiss blue and the depth of color of London blue. It is this intensity of color, finessed by expert craftmanship, that make ostroroyal® so unique.
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