The Masonic Ring and the symbols on it is a probably the most recognizable emblem of the world's largest fraternity - The Freemasons.
Most commonly, the Masonic Ring has a symbol with a compass and square on the top. If the ring has a stone, it is typically either a blue spinel, synthetic ruby or black onyx. There are at least a couple of opinions as to whether the wearer of the Masonic Ring should wear the ring with the points of the compass either facing towards the wearer or away from them. The square is the symbol of all earthly, the compass is symbolic of heavenly perfection.
In a combined emblem:
 – The ends of the square point up as a symbol of man's aspirations toward God
 – The points of the compass point down to represent heavenly qualities coming down from God to earth.
It seems that the proper way to wear the Masonic Ring would be that in which its symbolism is best expressed - when the hand is held in its usual position the points of the compass are to the earth and away from the wearer's eyes. 
To wear the Masonic Ring, you must have achieved the degree of Master Mason.

3rd Degree Masonic Blue Lodge Ring - Oval, Acacia leaves, 33 Zircon Stones
Handmade Oval Shape Freemason Ring; 3rd ​Degree Blue Lodge Masonic Ring; Acacia leaves, 33 Zircon Stones; Available Metals: White, Yellow, Rose Gold; .925 Sterling Silver; Gold plated and Rhodium plated; Any..
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Avdi Vide Tace Masonic Ring - United Grand Lodge of England
Handmade Masonic Fraternity Ring; United Grand Lodge of England; Avdi Vide Tace Masonic Ring; Available Metals: White, Yellow, Rose Gold; .925 Sterling Silver; Gold plated and Rhodium plated; Any size availa..
Biker Ring - Skull and Crossbones Motorcycle Ring
Handmade Biker Skull ring; Skull and Crossbones ring; Available Metals: White, Yellow, Rose Gold; .925 Sterling Silver; Gold plated and Rhodium plated; Any size available; Customizing options – write a messa..
Biker Ring Skull Masonic Ring - The Immortal - Silver and Gold
Handmade Skull ring; Biker Skull ring; Memento Mori; Custom made; Purity varieties - Gold or Silver; Customizing options – write a message; “Biker Ring Skull Masonic Ring - The Immortal” is made to order..
Biker Skull Ring - Masonic Skull Immortal v.1 - Silver and Gold
Handmade Skull ring; Biker Skull ring; Memento Mori; Custom made; Purity varieties - Gold or Silver; Customizing options – write a message; “Biker Skull Ring - Masonic Skull Immortal v.1” is made to orde..
Biker Skull Ring - Masonic Skull Immortal v.2 - Silver and Gold
Handmade Skull ring; Biker Skull ring; Memento Mori; Custom made; Purity varieties - Gold or Silver; Customizing options – write a message; “Biker Skull Ring - Masonic Skull Immortal v.2” is made to orde..
Biker Skull Ring - Skull and Crossbones Cigar Band ring - Silver and Gold
Handmade Biker Skull ring; Skull and Crossbones ring; Custom made; Hand engraved; Purity varieties - Gold or Silver; Customizing options – write a message; “Biker Skull Ring - Skull and Crossbones Cigar ..
Blue Lodge Masonic Ring - 3rd degree Square and Compass ring - Silver and Gold
  Handmade Vintage Masonic ring - Gold or Silver; Blue Lodge ring – Square and Compass; Custom made ring; Hand engraved ring; Purity varieties - Gold or Silver; Customizing options – write a message; ..
Blue Lodge Masonic Ring - 3rd Degree, Plumb and Trowel - Silver and Gold
Handmade Masonic ring - Gold or Silver; Masons Fraternity Ring – Blue Lodge 3rd degree; G, Square and Compass, Plumb and Trowel; Purity varieties - Gold or Sterling Silver; Customizing options – write a..
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