There are only 8 "true" traditional anniversary gifts in red italics The "other" traditional listings are from various sources (consensus) Modern list is from the New York Public Library Desk Reference. The Alternative modern list is drawn from various sources (consensus).
 

Names have been given to different year of wedding aniversary, and gems are assigned to each one of them. I really wonder if it is the jewelers who have come up with all these thing, so that more people will consider buying from them. The following chart contains the year of the anniversary, the name of the anniversary, the image of the gem, and the name of the gem. 

Some years are missed, so they could be combined onto one necklace, bracelet, earrings, or some type of setting. Another option would be to add a stone to a neckless for each anniversary year. You could develop a 5-year bracelet, a 10-year pendent, or a 20-year necklace. 
 
 Years
of
Marriage 
 Anniversary 
Stone
 Traditional   Modern 
 Alternative 
Modern
 1
Blue Topaz
Blue Topaz
 Paper  Plastics  Clocks
 2
Coral
Coral
Cotton   Cotton/Calico    China
 3
Peridot
Peridot
Leather  Leather  Crystal/Glass 
 4
 Amethyst
Amethyst
Flowers   Linen/Silk/Nylon   Appliances 
 5
Rhodolite
Rhodolite 
Wood
Wood  Silverware 
 6
Lapis Lazuli
Lapis Lazuli
 Candy/Iron Iron  Wood
 7
Zircon
Zircon 
Copper/Wood  Copper/Wool/Brass  Desk Sets 
 8
Pearl
Pearl 
Bronze/Pottery  Bronze/Appliances  Linens 
 9
Andalusite
Andalusite 
 Pottery/Willow Pottery  Leather
 10
Green Tourmaline
Green Tourmaline 
 Tin Aluminium  Diamond 
 11
Spinel
Spinel 
Steel  Steel Jewellery
 12
Tsavorite Garnet
Tsavorite Garnet 
Silk/Linen Silk/Linen  Pearl 
 13
Opal
Opal 
Lace  Lace Textile/Fur 
 14
Kunzite
Kunzite
Ivory Ivory Gold
 15
Blue Sapphire
Blue Sapphire 
Crystal   Glass Watches
 16
Topaz
Topaz
 17
Rubellite Tourmaline
Rubellite Tourmaline 
 18
Aquamarine
Aquamarine
 19
Beryl
Beryl 
 20
Emerald
Emerald 
 China China  Platinum
 21
 22
 23
 24
 25
Silver Jubilee
Jade
Jade
 Silver  Silver Silver 
 30
Pearl Jubilee
Fancy Sapphire
Fancy Sapphire
Pearl   Pearl Pearl 
 35
Cat´s Eye
Cat´s Eye 
Coral Coral/Jade  Jade
 40
Ruby
Ruby 
Ruby Ruby/Garnet Ruby
 45
Tanzanite
Tanzanite 
Sapphire Sapphire Sapphire
 50
 Golden Jubilee 
Golden Sapphire
Golden Sapphire 
 Gold Gold   Gold
 55
Alexandrite
Alexandrite 
 Emerald Emerald/Turquoise  Emerald 
 60
 Diamond Jubilee 
 Diamond
Diamond
Diamond  Gold  Diamond 
 70
Sapphire Jubilee
 75
Diamond Jubilee
Diamond Diamond/Gold Diamond
80
Ruby Jubilee