Brazilian alexandrite (daylight at left; incandescent at right), emerald cut, 3.18 ct, 9.06 x 7.23 x 5.1 mm.
Sceptered (not true sceptre) cuprian Elbaite (Paraíba) São José da Batalha, Paraíba, Brazil Mined about 1992 Specimen size: 3.2 × 0.8 × 0.8 cm. Photo: Reference Specimens -> http://www.fabreminerals.com/specimens/SHQ-reference-fine-minerals.php#TD46L1
Blue Zircon (Cambodia) Gem of superb quality displays a deeply saturated blue of the most desirable nature, surpassed only by its excellent transparency and luster. Long before scientists manufactured the first cubic zirconia gemstones, nature had already produced its own version—zircon. Only a few other gem materials equal the dispersed "fire" of zircon, diamond being one of them. Zircons of more than 10 carats are exceedingly rare.
5.33 carat color change garnet from Taita-Taveta (Madagascar) under natural daylight.
The Blue Lilli ~ This 30.06-carat blue diamond was cut by the William Goldberg Corporation. He named the stone after his wife, Lili. The stone's shape is a sort of tapered cushion.
Paraiba Tourmaline, named after the place it was found. It has appeared in the most amazing colours of neon blue (turquoise), green, blue, mauve and violet. Paraiba Tourmalines are amongst the most powerful and healing gemstones