Taiwan Electrical Gemstone [Stone] shining like a star cushion invisible socks

Gem name: tourmaline (common name: tourmaline) English name: Tourmaline ['tʊrməlɪn] Hardness: 7 – 7.5 Proportion: 3.0-3.25 Crystal system: hexagonal crystal system Morphology: The overall appearance is short to long columnar, or needle-like, radial and dense mass Color: red, pink, rose red, green, brown-green, blue, variegated, etc. Luster: glass luster to grease-like luster Transparency: translucent-transparent Place of Origin: the eastern slope of the Central Mountain Range and the east coast of Taiwan https://c1.staticflickr.com/5/4501/23936273208_84b82884aa_b.jpg https://c1.staticflickr.com/5/4511/37530931810_becac00a2b_b.jpg Size: 23-28 cm Unisex Material: 93% combed cotton, 3% Lycra elastic fiber, 4% nylon Washing: machine washable, water temperature no more than 30℃, machine drying is not allowed Place of Origin: Shetou, Changhua, Taiwan ▲ Cotton yarn has excellent moisture absorption and sweat wicking effect, and it feels comfortable whether you wear it in summer or winter ▲ The small ears double woven with elastic fiber, cover the back heel to reduce friction during movement ▲ The pure cotton thickened air cushion sole has extra cushioning effect, reducing the pressure caused by standing and walking for a long time ▲ The toe area with high activity is adjusted manually, and the non-inductive seam treatment increases the comfort of the toe ▲Silicone anti-skid and intimate design on the inside of the heel keeps the socks in place and prevents slippage https://c1.staticflickr.com/5/4487/37209674830_d31fcf5d00_z.jpg