what Im trying to do is fetch data from table appending various querys in laravel 5.2

Im trying to append various different querys for my filter but the problem here is my orWhere condition is working abnormally and giving me results irrespective of my where condition. So can any anyone help me with this problem in laravel 5.2. Im adding my controller below :-

public function earringsFilter(Request $request)
{
    if($request->isMethod('post')) {
        $data = array_filter($request->all());
        $filter = $data['filter'];
        $jewelleryEarringsData = Jwellery::select('id','name','price','msrp','metal_type','image_url','total_weight','image_2','image_3');
        $earrings = &$jewelleryEarringsData;
        $carat = array();
        $amount = array();
        $metal = array();
        if(isset($data['metal'])){
            $metal = $data['metal'];
            //$earrings->whereIn('metal_type', $metal);
            foreach($metal as $valk){
                $earrings->orWhere('metal_type', 'like', '%'.$valk.'%');
            }
        }
        if(isset($data['amount']['1']) && $data['amount']['1'] !=''){
            $amount = $data['amount'];
            $amt1 = $amount['0'];
            $amt2 = $amount['1'];
            $earrings->whereBetween('price',[$amt1,$amt2]);
        }
        if(isset($data['carat']['1']) && $data['carat']['1'] !=''){
            $carat = $data['carat'];
            $carat1 = $carat['0'];
            $carat2 = $carat['1'];
            $earrings->where('total_weight','>=',$carat1)->where('total_weight','<=',$carat2);
        } 
        $jewelleryEarringsData = $earrings->where('item_type', $filter)->get();
}

}

So the code where m using orWhere function of laravel is giving me abnormal results. Please help me out.

via Chebli Mohamed