You never really know a woman until you see her jewelry.
Here we have Tanzanite Pendant Necklace Solid 18kt White Gold  Including Chain for December born beauty. 

(Note: Gemstones and Diamonds are 100% Natural)

PRODUCT DESCRIPTION

Necklace Information :

Gemstone Information:

Gemstone Stone: Tanzanite
Birthstone Month: December 
Gemstone Cut: Round
Dimensions: 13 mm Diameter
Carat Weight: 1.86 ct
Clarity: Very Good

Diamond Information:
Diamond Weight:  0.27 Ct
Diamond Color: G-H
Diamond Clarity: SI
Diamond Cut: Round Brilliant Cut

Tanzanite is one of the rarest gemstones on earth and one of the most undervalued relative to its rarity. Given its scarcity, it would be reasonable to assume that it would sell at a high premium. 

Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystal orientation. Tanzanite can also appear differently when viewed under alternate lighting conditions. The blues appear more evident when subjected to fluorescent light and the violet hues can be seen readily when viewed under incandescent illumination. In its rough state tanzanite is colored a reddish brown to clear, and it requires heat treatment to remove the brownish "veil" and bring out the blue violet of the stone