Reasons for Rising Popularity of Fashion Jewelry

Jewellery has been essential to the humans ever since it was discovered. Though the stones, gems and metals were beautiful even in their raw forms, what developed the idea and inspired the humans to make personal adornments with them is indeed wondrous. Why humans adored these jewels so much that they prefer themselves being buried them after they died and how did the transformation came from collecting expensive jewellery to ornaments made with inexpensive materials?