Paraiba tourmalines, Ethiopian opals and 18k solid gold necklace

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Paraiba tourmaline is considered one of the most precious among all tourmaline - it has striking blue color, very distinguishing from any other stones.
I used top quality paraiba tourmaline beads (measure around from 4 to 8 mm long) and complimented it with sparkling rainbow Ethiopian opals.
All metal parts, including irregular beads and marine clasp are solid 18k gold.
Measures 49 cm long