▁References ▁ ▁External ▁links ▁▁▁ ▁Category : H indu ▁tem ples ▁in ▁Th ooth uk udi ▁district <0x0A> </s> ▁Mar cas ite ▁j ew el ry ▁is ▁j ew el ry ▁made ▁using ▁cut ▁& ▁pol ished ▁pieces ▁of ▁py rite ▁( fo ol ' s ▁gold ) ▁as ▁gem stone , ▁and ▁not , ▁as ▁the ▁name ▁suggests , ▁from ▁mar cas ite ▁( s ometimes ▁miss pel led ▁Mer cas ite ). ▁▁ ▁Both ▁Py rite ▁& ▁Mar cas ite ▁are ▁che cm ically ▁Iron ▁sul ph ide , ▁but ▁differ ▁in ▁their ▁cry stal ▁structures ▁giving ▁them ▁different ▁physical ▁properties ▁- ▁also ▁known ▁as ▁polym orphism . ▁Py rite ▁is ▁more ▁stable ▁and ▁less ▁brit t le ▁than ▁mar cas ite . ▁Mar cas ite ▁can ▁also ▁react ▁with ▁mo ist ure ▁to ▁form ▁sul ph ur ic ▁acid . ▁These ▁are ▁the ▁reasons ▁why ▁py rite ▁is ▁used ▁instead ▁of ▁real ▁mar cas ite ▁in ▁" mar cas ite " ▁j ew ell ery . ▁▁ ▁Mar cas ite ▁j ew ell ery ▁is ▁frequently ▁made ▁by ▁setting ▁small ▁pieces ▁of ▁fac et ed ▁py rite ▁into ▁silver . ▁Che aper ▁cost ume ▁j ew el ry ▁is ▁made ▁by ▁gl uing ▁pieces ▁of ▁py rite ▁rather ▁than ▁setting . ▁A ▁similar - looking ▁type ▁of ▁j ew el ry ▁can ▁be ▁made ▁from ▁small ▁pieces ▁of ▁cut ▁steel . ▁The ▁cut ▁& ▁pol ished ▁mar cas ite ▁pieces ▁reflect ▁light ▁at ▁different ▁angles ▁from ▁its ▁different ▁fac ets