Joanna Geary

Joanna Geary

London, UK / Work profile of @Guardian's Digital Development Editor. News innovation, social, tech, etc. I run @HacksHackersLDN (#HHLdn). Personal stuff at @joannageary
Joanna Geary
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Art Nouveau opal, sapphire, garnet, and enamel brooch by Louis Comfort Tiffany for Tiffany & Co., circa 1910. Via Diamonds in the Library.

Art Nouveau opal, sapphire, garnet, and enamel brooch by Louis Comfort Tiffany for Tiffany & Co., circa 1910. Via Diamonds in the Library.

An absolutely magnificent black opal and diamond cluster ring mounted in platinum. Art Deco ring circa 1925 set to centre with an opal weighing approximately 13.00 carats, in a six double claw setting. Set to either shoulder with a close set baguette cut diamond, remainder of diamond border is made up of twenty-six ‘eight cut’ stones in grain settings. The play of colour in this opal is outstanding. Berganza.

An absolutely magnificent black opal and diamond cluster ring mounted in platinum. Art Deco ring circa 1925 set to centre with an opal weighing approximately 13.00 carats, in a six double claw setting. Set to either shoulder with a close set baguette cut diamond, remainder of diamond border is made up of twenty-six ‘eight cut’ stones in grain settings. The play of colour in this opal is outstanding. Berganza.

Art Deco Platinum, Black Opal, and Diamond Ring, set with an oval cabochon black opal measuring approx. 13.20 x 10.70 x 3.40 mm, framed by single-cut diamond melee, millegrain and engraved accents, size 5 1/2, maker's mark.

Art Deco Platinum, Black Opal, and Diamond Ring, set with an oval cabochon black opal measuring approx. 13.20 x 10.70 x 3.40 mm, framed by single-cut diamond melee, millegrain and engraved accents, size 5 1/2, maker's mark.