LONDON, Jan. 8, 2013 /PRNewswire/ -- Stella McCartney will unveil her first collection of optical eyewear in March 2013. Drawing inspiration from the designer's signature balance between masculine and feminine, the collection introduces contemporary and cutting-edge styles that embrace the 'eco-friendly' philosophy of the brand. The line features five styles in key shapes referencing a warm colour palette of burgundy, taupe, black, teal and tortoise including light and spotty versions of the classic shade. The subtle yet recognizable signature step temple is dialled up with gold, silver and tonal accents fusing the new optical with the existing range of sunglasses, which launched in 2003. The sustainable optical collection features the same bio-acetate used in the sunglasses range, which are made of 54% natural sources. The product's formula combines cellulose, the most common organic compound on Earth, which is renewable and biodegradable, together with natural plasticizers, which differ from DEP (Diethyl Phthalate), as they derive from citric acid, a natural substance obtained through a fermentation process. The optical collection will be available from March 2013 in high-end retailers and opticians worldwide. The prices will range from £149 to £157 in the UK, €180 to €190 in Europe and $230 to $245 in the US. SM2001Ultra round shaped bio-acetate frame that features a thin contour line and keyhole bridge offering a balance between a contemporary and vintage look. The style is complete with a thin step temple on which the logo elegantly appears in of gold and silver. Available in burgundy, tortoise, spotty tortoise and black. SM2002This classic vintage frame is detailed with rounded edges to provide a stylised comfortable fit. The square silhouette is paired with Stella McCartney's thin distinctive step design temples. Colours include black, taupe, dark tortoise and spotty tortoise and is available in two sizes for a perfect fit.