Gem testing

1 January

Lady Gaga stood out at the Golden Globes with a custom-made Tiffany piece featuring a pear-shaped, 20-carat diamond. What was the necklace called?

A) The Aurora Borealis

B) The Northern Light

C) The Tiffany Aurora

D) The Tiffany Borealis2 February

Two stones from De Beers’ lab-grown brand, Lightbox, turned up at the Gemological Institute of America (GIA) for gra...