Blue - Wikipedia, The Free Encyclopedia
Colours; Cyan, which is midway on the spectrum between blue and green, and the other blue-greens turquoise, teal, and aquamarine. Blues also vary in shade or tint; A blue sapphire engagement ring is also considered a symbol of fidelity. Blue is often associated with ... Read Article
Ruby Ring: Ruby Ring 14k Gold
Ruby Ring. Tuesday, February 10, 2015. Ruby Ring 14k Gold Www.kilshaws.com One ladies 14K (stamped) yellow with white gold ring set with 1 (one) 5.1x3 . 6x2 . ... View Video
Mohs Scale Of Hardness - Identify Rocks & Minerals
The Mohs Scale of Hardness measures how well a substance resists scratching by another material. You can use this scale to test the hardness of rocks, minerals, and crystals, to help identify them. ... Read Article
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