Topaz, possesses so much fire, when Portuguese jewelers crafted the Portuguese Crown Jewels in the late 16th Century they named a 1680 carat Topaz: the 'Braganza Diamond' Pendants with Celtic basic knots, from the Celt culture, date back over 2,500 years before Christianity Silvershake 1.5ct. Genuine Blue Topaz 925 Sterling Silver Celtic Knot Solitaire Pendant with 18 Inch Chain Necklace; is shipped to you in anti-tarnish protection inside reinforced gift boxes with satin-style pouches; guaranteed beyond competitors Birthday in November or December? Honey Yellow-Orange Citrine and bright Yellow Topaz are November's birthstones. Sky, Swiss and London Blue Topaz are December's along with Turquoise Tanzanite, Zircon. Silvershake 1.5ct. Genuine Blue Topaz 925 Sterling Silver Celtic Knot Solitaire Pendant with 18 Inch Chain Necklace