Rubies
Emeralds
Sapphires
Gemstones
+1-212-804-9994
contact us
Filters 
Stone Type
Design style
Metal
Carat
Center Stone Shape
Color intensity
Enhancement
Price
Colors
Origin
Clarity
Cutting style
Certificate type
Availability
904 results
Change view:
Sort by:
Select
Change view:
1.63 Ct. Purple Amethyst Ring, 18K White Gold 1
1.63 Ct. Purple Amethyst Ring, 18K White Gold 2
1.63 Ct. Purple Amethyst Ring, 18K White Gold 3
1.63 Ct. Purple Amethyst Ring, 18K White Gold 4
1.63 Ct. Amethyst 18K White Gold ring
Item ID: 140370
$1,779
1.06 Ct. Purple Spinel Ring, 18K White Gold 1
1.06 Ct. Purple Spinel Ring, 18K White Gold 2
1.06 Ct. Purple Spinel Ring, 18K White Gold 3
1.06 Ct. Purple Spinel Ring, 18K White Gold 4
1.06 Ct. Spinel 18K White Gold ring
Item ID: 149288
$2,584
1.76 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
1.76 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
1.76 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
1.76 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
1.76 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 148088
$3,968
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 1
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 2
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 3
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 4
0.88 Ct. Rhodolite Garnet 18K White Gold ring
Item ID: 146449
$1,793
1.29 Ct. Purple Spinel Ring, 18K White Gold 1
1.29 Ct. Purple Spinel Ring, 18K White Gold 2
1.29 Ct. Purple Spinel Ring, 18K White Gold 3
1.29 Ct. Purple Spinel Ring, 18K White Gold 4
1.29 Ct. Spinel 18K White Gold ring
Item ID: 135822
$3,412
1.97 Ct. Purple Amethyst Ring, 18K White Gold 1
1.97 Ct. Purple Amethyst Ring, 18K White Gold 2
1.97 Ct. Purple Amethyst Ring, 18K White Gold 3
1.97 Ct. Purple Amethyst Ring, 18K White Gold 4
1.97 Ct. Amethyst 18K White Gold ring
Item ID: 138890
$1,939
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 1
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 2
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 3
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 4
0.88 Ct. Rhodolite Garnet 18K White Gold ring
Item ID: 138723
$2,235
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
1.82 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 136658
$3,839
2.79 Ct. Purple Spinel Ring, 18K White Gold 1
2.79 Ct. Purple Spinel Ring, 18K White Gold 2
2.79 Ct. Purple Spinel Ring, 18K White Gold 3
2.79 Ct. Purple Spinel Ring, 18K White Gold 4
2.79 Ct. Spinel 18K White Gold ring
Item ID: 136725
$3,343
1.97 Ct. Purple Amethyst Ring, 18K White Gold 1
1.97 Ct. Purple Amethyst Ring, 18K White Gold 2
1.97 Ct. Purple Amethyst Ring, 18K White Gold 3
1.97 Ct. Purple Amethyst Ring, 18K White Gold 4
1.97 Ct. Amethyst 18K White Gold ring
Item ID: 133587
$1,759
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 1
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 2
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 3
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 4
0.88 Ct. Rhodolite Garnet 18K White Gold ring
Item ID: 138713
$2,058
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
2.06 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 139122
$3,325
4.86 Ct. Purple Amethyst Ring, 18K White Gold 1
4.86 Ct. Purple Amethyst Ring, 18K White Gold 2
4.86 Ct. Purple Amethyst Ring, 18K White Gold 3
4.86 Ct. Purple Amethyst Ring, 18K White Gold 4
4.86 Ct. Amethyst 18K White Gold ring
Item ID: 151723
$2,444
1.76 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
1.76 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
1.76 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
1.76 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
1.76 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 136563
$4,319
1.68 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
1.68 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
1.68 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
1.68 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
1.68 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 146070
$2,736
1.29 Ct. Purple Spinel Ring, 18K White Gold 1
1.29 Ct. Purple Spinel Ring, 18K White Gold 2
1.29 Ct. Purple Spinel Ring, 18K White Gold 3
1.29 Ct. Purple Spinel Ring, 18K White Gold 4
1.29 Ct. Spinel 18K White Gold ring
Item ID: 135814
$3,097
0.84 Ct. Purple Amethyst Ring, 18K White Gold 1
0.84 Ct. Purple Amethyst Ring, 18K White Gold 2
0.84 Ct. Purple Amethyst Ring, 18K White Gold 3
0.84 Ct. Purple Amethyst Ring, 18K White Gold 4
0.84 Ct. Amethyst 18K White Gold ring
Item ID: 163251
$2,744
1.63 Ct. Purple Amethyst Ring, 18K White Gold 1
1.63 Ct. Purple Amethyst Ring, 18K White Gold 2
1.63 Ct. Purple Amethyst Ring, 18K White Gold 3
1.63 Ct. Purple Amethyst Ring, 18K White Gold 4
1.63 Ct. Amethyst 18K White Gold ring
Item ID: 140385
$4,288
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
2.06 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 139113
$3,342
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
1.82 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 163544
$5,101
1.24 Ct. Purple Tourmaline Ring, 18K White Gold 1
1.24 Ct. Purple Tourmaline Ring, 18K White Gold 2
1.24 Ct. Purple Tourmaline Ring, 18K White Gold 3
1.24 Ct. Purple Tourmaline Ring, 18K White Gold 4
1.24 Ct. Tourmaline 18K White Gold ring
Item ID: 149192
$2,453
1.29 Ct. Purple Spinel Ring, 18K White Gold 1
1.29 Ct. Purple Spinel Ring, 18K White Gold 2
1.29 Ct. Purple Spinel Ring, 18K White Gold 3
1.29 Ct. Purple Spinel Ring, 18K White Gold 4
1.29 Ct. Spinel 18K White Gold ring
Item ID: 135789
$3,010
1.52 Ct. Purple Spinel Ring, 18K White Gold 1
1.52 Ct. Purple Spinel Ring, 18K White Gold 2
1.52 Ct. Purple Spinel Ring, 18K White Gold 3
1.52 Ct. Purple Spinel Ring, 18K White Gold 4
1.52 Ct. Spinel 18K White Gold ring
Item ID: 136872
$2,804
1.52 Ct. Purple Spinel Ring, 18K White Gold 1
1.52 Ct. Purple Spinel Ring, 18K White Gold 2
1.52 Ct. Purple Spinel Ring, 18K White Gold 3
1.52 Ct. Purple Spinel Ring, 18K White Gold 4
1.52 Ct. Spinel 18K White Gold ring
Item ID: 136845
$3,370
2.67 Ct. Purple Spinel Ring, 18K White Gold 1
2.67 Ct. Purple Spinel Ring, 18K White Gold 2
2.67 Ct. Purple Spinel Ring, 18K White Gold 3
2.67 Ct. Purple Spinel Ring, 18K White Gold 4
2.67 Ct. Spinel 18K White Gold ring
Item ID: 128995
$3,746
4.86 Ct. Purple Amethyst Ring, 18K White Gold 1
4.86 Ct. Purple Amethyst Ring, 18K White Gold 2
4.86 Ct. Purple Amethyst Ring, 18K White Gold 3
4.86 Ct. Purple Amethyst Ring, 18K White Gold 4
4.86 Ct. Amethyst 18K White Gold ring
Item ID: 151712
$3,756
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
1.82 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 136618
$3,661
2.53 Ct. Pinkish Purple Spinel Ring, 18K White Gold 1
2.53 Ct. Pinkish Purple Spinel Ring, 18K White Gold 2
2.53 Ct. Pinkish Purple Spinel Ring, 18K White Gold 3
2.53 Ct. Pinkish Purple Spinel Ring, 18K White Gold 4
2.53 Ct. Spinel 18K White Gold ring
Item ID: 149159
$6,270
1.52 Ct. Purple Spinel Ring, 18K White Gold 1
1.52 Ct. Purple Spinel Ring, 18K White Gold 2
1.52 Ct. Purple Spinel Ring, 18K White Gold 3
1.52 Ct. Purple Spinel Ring, 18K White Gold 4
1.52 Ct. Spinel 18K White Gold ring
Item ID: 136864
$3,718
1.52 Ct. Purple Spinel Ring, 18K White Gold 1
1.52 Ct. Purple Spinel Ring, 18K White Gold 2
1.52 Ct. Purple Spinel Ring, 18K White Gold 3
1.52 Ct. Purple Spinel Ring, 18K White Gold 4
1.52 Ct. Spinel 18K White Gold ring
Item ID: 136881
$3,127
1.97 Ct. Purple Amethyst Ring, 18K White Gold 1
1.97 Ct. Purple Amethyst Ring, 18K White Gold 2
1.97 Ct. Purple Amethyst Ring, 18K White Gold 3
1.97 Ct. Purple Amethyst Ring, 18K White Gold 4
1.97 Ct. Amethyst 18K White Gold ring
Item ID: 133572
$1,543
2.74 Ct. Purple Spinel Ring, 18K White Gold 1
2.74 Ct. Purple Spinel Ring, 18K White Gold 2
2.74 Ct. Purple Spinel Ring, 18K White Gold 3
2.74 Ct. Purple Spinel Ring, 18K White Gold 4
2.74 Ct. Spinel 18K White Gold ring
Item ID: 129041
$5,364
2.67 Ct. Purple Spinel Ring, 18K White Gold 1
2.67 Ct. Purple Spinel Ring, 18K White Gold 2
2.67 Ct. Purple Spinel Ring, 18K White Gold 3
2.67 Ct. Purple Spinel Ring, 18K White Gold 4
2.67 Ct. Spinel 18K White Gold ring
Item ID: 129026
$4,014
1.52 Ct. Purple Spinel Ring, 18K White Gold 1
1.52 Ct. Purple Spinel Ring, 18K White Gold 2
1.52 Ct. Purple Spinel Ring, 18K White Gold 3
1.52 Ct. Purple Spinel Ring, 18K White Gold 4
1.52 Ct. Spinel 18K White Gold ring
Item ID: 136855
$3,558
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
1.82 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 136677
$4,201
1.29 Ct. Purple Spinel Ring, 18K White Gold 1
1.29 Ct. Purple Spinel Ring, 18K White Gold 2
1.29 Ct. Purple Spinel Ring, 18K White Gold 3
1.29 Ct. Purple Spinel Ring, 18K White Gold 4
1.29 Ct. Spinel 18K White Gold ring
Item ID: 135803
$3,675
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
2.06 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 139135
$3,344
1.67 Ct. Purple Spinel Ring, 18K White Gold 1
1.67 Ct. Purple Spinel Ring, 18K White Gold 2
1.67 Ct. Purple Spinel Ring, 18K White Gold 3
1.67 Ct. Purple Spinel Ring, 18K White Gold 4
1.67 Ct. Spinel 18K White Gold ring
Item ID: 147968
$2,891
4.86 Ct. Purple Amethyst Ring, 18K White Gold 1
4.86 Ct. Purple Amethyst Ring, 18K White Gold 2
4.86 Ct. Purple Amethyst Ring, 18K White Gold 3
4.86 Ct. Purple Amethyst Ring, 18K White Gold 4
4.86 Ct. Amethyst 18K White Gold ring
Item ID: 151755
$2,782
4.42 Ct. Violet Tanzanite Ring, 18K White Gold 1
4.42 Ct. Violet Tanzanite Ring, 18K White Gold 2
4.42 Ct. Violet Tanzanite Ring, 18K White Gold 3
4.42 Ct. Violet Tanzanite Ring, 18K White Gold 4
4.42 Ct. Tanzanite 18K White Gold ring
Item ID: 167739
$5,275
2.14 Ct. Purplish Red Rubellite Tourmaline Ring, 18K White Gold 1
2.14 Ct. Purplish Red Rubellite Tourmaline Ring, 18K White Gold 2
2.14 Ct. Purplish Red Rubellite Tourmaline Ring, 18K White Gold 3
2.14 Ct. Purplish Red Rubellite Tourmaline Ring, 18K White Gold 4
2.14 Ct. Rubellite Tourmaline 18K White Gold ring
Item ID: 149218
$2,980
1.63 Ct. Purple Amethyst Ring, 18K White Gold 1
1.63 Ct. Purple Amethyst Ring, 18K White Gold 2
1.63 Ct. Purple Amethyst Ring, 18K White Gold 3
1.63 Ct. Purple Amethyst Ring, 18K White Gold 4
1.63 Ct. Amethyst 18K White Gold ring
Item ID: 140380
$1,729
2.67 Ct. Purple Spinel Ring, 18K White Gold 1
2.67 Ct. Purple Spinel Ring, 18K White Gold 2
2.67 Ct. Purple Spinel Ring, 18K White Gold 3
2.67 Ct. Purple Spinel Ring, 18K White Gold 4
2.67 Ct. Spinel 18K White Gold ring
Item ID: 129018
$5,214
1.97 Ct. Purple Amethyst Ring, 18K White Gold 1
1.97 Ct. Purple Amethyst Ring, 18K White Gold 2
1.97 Ct. Purple Amethyst Ring, 18K White Gold 3
1.97 Ct. Purple Amethyst Ring, 18K White Gold 4
1.97 Ct. Amethyst 18K White Gold ring
Item ID: 133579
$3,496
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 1
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 2
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 3
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 4
0.88 Ct. Rhodolite Garnet 18K White Gold ring
Item ID: 138734
$1,685
2.97 Ct. Purplish Pink Spinel Ring, 18K White Gold 1
2.97 Ct. Purplish Pink Spinel Ring, 18K White Gold 2
2.97 Ct. Purplish Pink Spinel Ring, 18K White Gold 3
2.97 Ct. Purplish Pink Spinel Ring, 18K White Gold 4
2.97 Ct. Spinel 18K White Gold ring
Item ID: 154189
$5,370
2.74 Ct. Purple Spinel Ring, 18K White Gold 1
2.74 Ct. Purple Spinel Ring, 18K White Gold 2
2.74 Ct. Purple Spinel Ring, 18K White Gold 3
2.74 Ct. Purple Spinel Ring, 18K White Gold 4
2.74 Ct. Spinel 18K White Gold ring
Item ID: 129035
$6,492
2.67 Ct. Purple Spinel Ring, 18K White Gold 1
2.67 Ct. Purple Spinel Ring, 18K White Gold 2
2.67 Ct. Purple Spinel Ring, 18K White Gold 3
2.67 Ct. Purple Spinel Ring, 18K White Gold 4
2.67 Ct. Spinel 18K White Gold ring
Item ID: 129010
$4,087
1.29 Ct. Purple Spinel Ring, 18K White Gold 1
1.29 Ct. Purple Spinel Ring, 18K White Gold 2
1.29 Ct. Purple Spinel Ring, 18K White Gold 3
1.29 Ct. Purple Spinel Ring, 18K White Gold 4
1.29 Ct. Spinel 18K White Gold ring
Item ID: 135774
$3,345
1.76 Ct. Purplish Blue Spinel Ring, 18K White Gold 1
1.76 Ct. Purplish Blue Spinel Ring, 18K White Gold 2
1.76 Ct. Purplish Blue Spinel Ring, 18K White Gold 3
1.76 Ct. Purplish Blue Spinel Ring, 18K White Gold 4
1.76 Ct. Spinel 18K White Gold ring
Item ID: 163243
$3,911
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
1.82 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
1.82 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 136644
$4,928
4.86 Ct. Purple Amethyst Ring, 18K White Gold 1
4.86 Ct. Purple Amethyst Ring, 18K White Gold 2
4.86 Ct. Purple Amethyst Ring, 18K White Gold 3
4.86 Ct. Purple Amethyst Ring, 18K White Gold 4
4.86 Ct. Amethyst 18K White Gold ring
Item ID: 151745
$3,105
1.97 Ct. Purple Amethyst Ring, 18K White Gold 1
1.97 Ct. Purple Amethyst Ring, 18K White Gold 2
1.97 Ct. Purple Amethyst Ring, 18K White Gold 3
1.97 Ct. Purple Amethyst Ring, 18K White Gold 4
1.97 Ct. Amethyst 18K White Gold ring
Item ID: 133594
$1,788
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 1
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 2
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 3
2.06 Ct. Purplish Blue Cobalt Spinel Ring, 18K White Gold 4
2.06 Ct. Cobalt Spinel 18K White Gold ring
Item ID: 139143
$3,115
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 1
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 2
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 3
0.88 Ct. Purplish Pink Rhodolite Garnet Ring, 18K White Gold 4
0.88 Ct. Rhodolite Garnet 18K White Gold ring
Item ID: 138698
$1,560
2.79 Ct. Purple Spinel Ring, 18K White Gold 1
2.79 Ct. Purple Spinel Ring, 18K White Gold 2
2.79 Ct. Purple Spinel Ring, 18K White Gold 3
2.79 Ct. Purple Spinel Ring, 18K White Gold 4
2.79 Ct. Spinel 18K White Gold ring
Item ID: 136759
$3,921
1.63 Ct. Purple Amethyst Ring, 18K White Gold 1
1.63 Ct. Purple Amethyst Ring, 18K White Gold 2
1.63 Ct. Purple Amethyst Ring, 18K White Gold 3
1.63 Ct. Purple Amethyst Ring, 18K White Gold 4
1.63 Ct. Amethyst 18K White Gold ring
Item ID: 140360
$2,586
2.67 Ct. Purple Spinel Ring, 18K White Gold 1
2.67 Ct. Purple Spinel Ring, 18K White Gold 2
2.67 Ct. Purple Spinel Ring, 18K White Gold 3
2.67 Ct. Purple Spinel Ring, 18K White Gold 4
2.67 Ct. Spinel 18K White Gold ring
Item ID: 129003
$4,706
2.73 Ct. Purplish Pink Spinel Ring, 18K White Gold 1
2.73 Ct. Purplish Pink Spinel Ring, 18K White Gold 2
2.73 Ct. Purplish Pink Spinel Ring, 18K White Gold 3
2.73 Ct. Purplish Pink Spinel Ring, 18K White Gold 4
2.73 Ct. Spinel 18K White Gold ring
Item ID: 148648
$3,789
2.73 Ct. Purplish Pink Spinel Ring, 18K Yellow Gold 1
2.73 Ct. Purplish Pink Spinel Ring, 18K Yellow Gold 2
2.73 Ct. Purplish Pink Spinel Ring, 18K Yellow Gold 3
2.73 Ct. Purplish Pink Spinel Ring, 18K Yellow Gold 4
2.73 Ct. Spinel 18K Yellow Gold ring
Item ID: 148649
$3,669

Our Customers Love Us

See what people are saying on Google and Verified Reviews