Now Compatible with Stardew 1.6

Note for mod authors of Space Core based Skill Mods:

All of the following should be done in your own mod's files.

All of the rings are added right before a save is created or a save begins to load, meaning with the proper setup you can edit the rings using Content Patcher. Anything about them can be changed other than their effect and price, though just to be safe I would stick to changing the:

DisplayName
Description
Texture
CustomFields

Example:
{
"Action": "EditData",
"Target": "Data/Objects",
"When": {
"Time": "{{Range: 0600, 2600}}"
},
"Fields": {
"RingID": {
"DisplayName": "Something Else",
"CustomFields": {
"AlphaMeece.SkillRings_Shop": "SeedShop"
}
}
}
}

Some notes:

The "When Time" isn't required per se, but it removes a warning content patcher gives on startup since the rings don't actually exist until the player starts a game
"RingID" will be: AlphaMeece.SkillRings_[Your Skill ID]Ring[1|2|3]
- For example if JohnDoe made a horsemanship mod and the skill's ID was JohnDoe.Horsemanship, the rings would have the IDs:- AlphaMeece.SkillRings_JohnDoe.HorsemanshipRing1- AlphaMeece.SkillRings_JohnDoe.HorsemanshipRing2- AlphaMeece.SkillRings_JohnDoe.HorsemanshipRing3
The only customfield used by the mod will be "AlphaMeece.SkillRings_Shop" and the value associated with it should be the name of the shop in the game, I don't see why this wouldn't work with modded shops, but I have not tested it as of yet. If this custom field is excluded it will default to the traveling merchant. If the value is a shop that does not exist then it will default to traveling merchant and display a message in the console.

Translations:
Mandarin(中文): Included in Base Mod(包括)
Courtesy of sakuraandfish, and Ethan

Korean(한국어): Included in Base Mod(포함)
Courtesy of 4KMong

German(Deutsch): Included in Base Mod(Inklusive)
Courtesy of Th3Tob1

Portuguese(Português)): https://www.nexusmods.com/stardewvalley/mods/9516?tab=description
Courtesy of NecromanteOfficial

Spanish(Español): https://www.nexusmods.com/stardewvalley/mods/15847?tab=description
Courtesy of wilsarave

Note: This mod is not compatible with split screen co-op.

Source Code GitHub Link:
https://github.com/AlphaMeece/StardewSkillRings

Retextures:
Note: I Highly Recommend these, they're better than anything I could make
Skill Rings REMIX Feat. Paint.net (Radio ver.)
Courtesy of AtomicBunnytron

What is it?
This mod adds a collection of 18 rings to the game, with 3 rings for each skill and 3 rings for bonus experience gain.
Tier 1 rings give a +1(or x1.1)
Tier 2 rings give a +2(or x1.2)
Tier 3 rings give a +5(or x1.5)

Each set of rings has its own source while the tier 3 rings all require 4 hearts with someone that has to do with that skill, the person will send you a broken version of the ring that you must do something with to fix, which is unique to each ring.

These rings do stack with food buffs as well.
These rings may also be used to make a combined ring.

Important note:
These rings do not stack with themselves, or prior tiers, so wearing 2 +5 fishing rings results in only +5, and wearing a +5 fishing ring with a +2 fishing ring still results in +5.

The Rings

Category
Tier 1
Tier 2
Tier 3

Farming
Ring of Decent Soil
Ring of the Green Thumb
Ring of Nature's Oracle

Foraging
Ring of Deep Roots
Ring of the Gatherer
Ring of Natural Bounty

Fishing
Ring of the Apprentice Fisher
Ring of the Mad Mariner
Ring of the Legendary Angler

Combat
Ring of Sharper Blades
Ring of Pure Strength
Ring of the War God

Mining
Ring of the Wieldy Pick
Ring of the Caves
Ring of Dwarven Luck

Experience
Ring of Insight
Ring of Knowledge
Ring of Ineffable Knowledge

Where to Obtain
Farming
Tiers 1 and 2 can be purchased from Marnie
Tier 3: 4 Hearts with Marnie

Foraging
The recipes for tiers 1 and 2 are gotten from Linus at 1 and 2 hearts respectively
Tier 3: 4 Hearts with Linus

Fishing
Tiers 1 and 2 can be purchased from Willy
Tier 3: 4 Hearts with Willy

Combat
Tiers 1 and 2 can be purchased from Marlon(Adventurer's Guild)
Tier 3: 4 Hearts with Abigail

Mining
Tiers 1 and 2 can be purchased from the Dwarf
Tier 3: 4 Hearts with the Dwarf

Experience Gain
All tiers purchased from Sandy in the Desert

Luck
All purchased from Krobus

Note: This mod needs Content Patcher

Directly Supported Mods(Red mods were not updated to 1.6 at the time of release):

Stardew Valley Expanded
Wear More Rings
~~Combine Many Rings~~
~~Balanced Combine Many Rings~~
~~Luck Skill~~

~~- 3 new rings sold by Krobus~~

~~Cooking Skill (by spacechase0)~~

~~- No new rings, however experience rings will affect cooking experience gain~~

~~Cooking Skill (by bblueberry)~~

~~- No new rings, however experience rings will affect cooking experience gain~~

~~Binning Skill~~

~~- Same as cooking skill by spacechase0, no new rings, but exp rings will work~~

Note:
If the mod does not change the map in any way, Skill Rings will work. If the mod does change the map, so long as the Secret Woods, Clint's House, Wizard's Basement, and the Quarry Cave are unchanged, Skill Rings will work.

Commands:

fixhealth: resets the player's max health to what it should be. This command accounts for combat levels(+5 per level other than 5 and 10), the fighter(+15) and defender(+25) professions, and the Iridium milk(+25) from Mr.Qi
fixring: Changes the currently held broken ring into its tier 3 equivalent

Tier 3 Ring Spoilers

Grassy Ring(Farming)

Right click on a farm animal with it

Sticky Ring(Foraging)

Bring it to the statue in the secret woods

Dusty Ring(Fishing)

Right click on a fish pond with it

Cursed Ring(Combat)

Bring it to the Reaper statue that held the golden scythe

Stone Ring(Mining)

Bring it to Clint's anvil

Elusive Ring(Experience Gain)

Bring it to the Shrine of Illusions in the Wizard's Basement