This is a list of the jems and what they do. i find it helpful and thought it might help some of you other hunters out there.

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Skills Value Skill Result Description

Attack 20 Attack Up (Large) Greater increase in Attack
15 Attack Up (Medium) Moderate increase in Attack
10 Attack Up (Small) Slight increase in Attack
-10 Attack Down (Small) Slight decrease in Attack
-15 Attack Down (Medium) Moderate decrease in Attack
-20 Attack Down (Large) Greater decrease in Attack

Defense 20 Defense +40 Increases Defense by 40
15 Defense +30 Increases Defense by 30
10 Defense +20 Increases Defense by 20
-10 Defense -20 Decreases Defense by 20
-15 Defense -30 Decreases Defense by 30
-20 Defense -40 Decreases Defense by 40

Health 20 Health +50 Increases Health by 50
15 Health +30 Increases Health by 30
10 Health +20 Increases Health by 20
10 Health -10 Decreases Health by 10
-15 Health -20 Decreases Health by 20
-20 Health -30 Decreases Health by 30

All Resist 20 All Resist +10 Adds 10 to all Resistances
15 All Resist +5 Adds 5 to all Resistances
10 All Resist +3 Adds 3 to all Resistances
-10 All Resist 3 Minus 3 to all Resistances
-15 All Resist 5 Minus 5 to all Resistances
-20 All Resist 10 Minus 10 to all Resistances

Fire Res 15 Fire Res +10 Adds 10 to Fire Resistance
10 Fire Res +5 Adds 5 to Fire Resistance
-10 Fire Res 5 Minus 5 to Fire Resistance
-15 Fire Res -10 Minus 10 to Fire Resistance

Water Res 15 Water Res +10 Adds 10 to Water Resistance
10 Water Res +5 Adds 5 to Water Resistance
-10 Water Res 5 Minus 5 to Water Resistance
-15 Water Res 10 Minus 10 to Water Resistance

Thunder Res 15 Thunder Res +10 Adds 10 to Thunder Resistance
10 Thunder Res +5 Adds 5 to Thunder Resistance
-10 Thunder Res 5 Minus 5 to Thunder Resistance
-15 Thunder Res 10 Minus 10 to Thunder Resistance

Ice Res 15 Ice Res +10 Adds 10 to Ice Resistance
10 Ice Res +5 Adds 5 to Ice Resistance
-10 Ice Res 5 Minus 5 to Ice Resistance
-15 Ice Res -10 Minus 10 to Ice Resistance

Dragon Res 15 Dragon Res +10 Adds 10 to Dragon Resistance
10 Dragon Res +5 Adds 5 to Dragon Resistance
-10 Dragon Res-5 Minus 5 to Dragon Resistance
-15 Dragon Res -10 Minus 10 to Dragon Resistance

Faint 15 Faint Negated Immune to K.O. status
10 Faint Prob Halved K.O. duration halved
-10 Faint Duration [X2] K.O. duration doubled

Poison 15 Poison Negated Immune to Poison status
10 Poison Dur Halved Poison duration halved
-10 Poison Duration[x2] Poison duration doubled

Paralysis 15 Paralysis Negated Immune to Paralysis status
10 Para Duration Halved Paralysis duration halved
-10 Para Duration[x2] Paralysis duration doubled

Sleep 15 Sleep Negated Immune to Sleep status
10 Sleep Dur Halved Sleep duration halved
-10 Sleep Duration[X2] Sleep duration doubled

Antiseptic 10 Antiseptic Immune to health item use negation effects

Fatigue 10 Fatigue Cancellation Immune to fatigue effects

Snow Resistance 10 Snow Resistance Immune to snow effects

Quake Resistance 10 Quake Resistance Immune to quake effects

HearProtect 15 High-Grade Earplug Unaffected by all monster roars
10 Earplug Unaffected by some monster roars

WindPress 20 Dragon Wind Breaker Unaffected by all wind pressures
15 High Wind Res Unaffected by large wind pressures
10 Low Wind Res Unaffected by small wind pressures

Steal No Effect 10 Steal No Effect Inventory items cannot be stolen

Status Res 10 Abnormal Status Negated Unaffected by status effects

FireDragonRes 10 Fire Dragon Ward Terrain Damage Reduce[Hi] and Fire Resistance

Daora Res 10 Daora Ward Dragon Wind Breaker and Snow Resistance

ChamleosRes 10 Chameleos Ward Fatigue Cancellation and Steal No Effect


Artisan 10 Sharpness +1 Increases weapon sharpness
-10 Sharpness -1 Decreases weapon shapness

Sharpness 10 Sharp Sword Weapon sharpness decrease is halved
-10 Blunt Edge Weapon sharpness decrease is doubled

Fencing 10 ESP Negates deflection of attacks

SwdShrpner 10 Sharpening Skl Inc Faster weapon sharpening speed
-10 Sharpening Skl Halved Slower weapon sharpening speed

Guard 20 Guard +2 Reduces stamina use, damage and push back when blocking
10 Guard +1 Reduces stamina use, damage and push back when blocking
-10 Guard -1 Increases stamina use, damage and push back when blocking
-20 Guard -2 Increases stamina use, damage and push back when blocking

Auto-Guard 10 Auto-Guard Blocks attacks automatically if doing nothing

Drawn Critical 10 Unsheathed Attack Critical Unsheathed attacks do 125% damage

SwdMastery 10 True Strike Sharpness +1 and Attack Up (Large)

NormalS Up 10 NormalS/RapidBow Up Increases damage of Normal S and Rapid shots

PierceS Up 10 PierceS/PierceBow Up Increases damage of Pierce S and Pierce shots

PelletS Up 10 PelletS/ScattrBow Up Increases damage of Pellet S and Scatter shots

NormalSAdd 10 All Shots Up Adds 1 to all Normal S ammo load limits

PierceSAdd 15 All Pierce Lvls Up Adds 1 to all Pierce S ammo load limits
10 Pierce S LV 1 Add Adds 1 to Pierce S Lv1 ammo load limit

PelletSAdd 15 All Scatter Lvls Up Adds 1 to all Pellet S ammo load limits
10 Scatter Lvl 1 Up Adds 1 to Pellet S Lv1 ammo load limit

CragS Add 15 All Crag Lvls Up Adds 1 to all Crag S ammo load limits
10 Crag Lvl 1 up Adds 1 to Crag S Lv1 ammo load limit

ClustS Add 15 All Clust Lvl Up Adds 1 to all Clust S ammo load limits
10 Clust Lvl 1 Up Adds 1 to Clust S Lv1 ammo load limit

Load 20 Reloading Speed +3 Bowgun reloading speed increases 3 levels
15 Reloading Speed +2 Bowgun reloading speed increases 2 levels
10 Reloading Speed +1 Bowgun reloading speed increases 1 level
-10 Reloading Speed -1 Bowgun reloading speed decreases 1 level
-15 Reloading Speed -2 Bowgun reloading speed decreases 2 levels
-20 Reloading Speed -3 Bowgun reloading speed decreases 3 levels

Speed Fire 10 Speed Fire No reloading required until change of ammo type

Recoil 20 Recoil Reduction +2 Bowgun recoil negated
10 Recoil Reduction +1 Bowgun recoil reduced

Precision 10 Target Range Down Reduces shots being off-center
-10 Target Range Up Increases shots being off-center

PoisnCtAdd 10 Poison Coat Add Allows Bow to use Poison Coatings

Para CtAdd 10 Paralysis Coat Add Allows Bow to use Paralysis Coatings

SleepCtAdd 10 Sleep Coat Add Allows Bow to use Sleep Coatings

PowerCtAdd 10 Power Coat Add Allows Bow to use Power Coatings

RazorCtAdd 10 Razor Coat Add Allows Bow to use Razor Coatings

Marksman 10 Shot Damage Up Increases damage of all Normal S, Pierce S and Pellet S

Expert 20 Reckless Abandon +3 Increases Affinity by 30%
15 Reckless Abandon +2 Increases Affinity by 20%
10 Reckless Abandon +1 Increases Affinity by 10%
-10 Reckless Abandon -1 Decreases Affinity by 10%
-15 Reckless Abandon -2 Decreases Affinity by 20%
-20 Reckless Abandon -3 Decreases Affinity by 30%

Spc Attack 10 Abnormal Sts Atk Up Increases Attack Power of all Status attacks

ElementAtk 10 Element Atk Up Increases Attack Power of all Elemental attacks

Rec Speed 20 Damage Rec Speed +2 Red part of health gauge increases 4 times faster
10 Damage Rec Speed +1 Red part of health gauge increases 2 times faster
-10 Damage Rec Speed -1 Red part of health gauge increases 2 times slower
-20 Damage Rec Speed -2 Red part of health gauge increases 4 times slower

Protection 10 Divine Protection 25% chance of decreasing damage taken by 30%
-10 Demonic Protection 25% chance of increasing damage taken by 30%

Guard Inc 10 Guard Inc Able to block attacks not normally blockable

Evade 15 Evade +2 Increased invulnerability time during
rolling, diving, backhopping and
sidestepping

10 Evade +1 Increased invulnerability time during !
rolling, diving, backhopping and sidestepping

Evade Inc 10 Evade Distance Up Increased distance of maneuvers

Potential 15 Adrenaline +2 Increased Attack Power and Defense when health is low
10 Adrenaline +1 Increased Defense when health is low
-10 Worry Decreased Attack Power when health is low

Gunnery 15 Gunnery King Increased damage of Ballista S, Cannon S,
Gunlance, ! Shelling and Crag S
10 Gunnery Master Increased damage of Ballisia S and Cannon S.

Loading 10 Load Up Increases the ammo limit of all existing shots
by 1

Fast Charge 10 Concentration Increases the charging speed of GS, Hammers and Bows

-10 Distraction Decreases the charging speed of GS, Hammers and Bows

Survival 10 Survival If health is above 60-70%, a fatal blow is negated !
and Health reduces to 1

Rage 10 Rampage Adrenaline +2 and Survival

Map 10 Farsight Map of area is automatically shown
-10 Map Unavailable Map of area is never shown

PsychicVis 15 Autotracker Location of monster is always shown on the map
10 Detect Exact movements is shown on map when monster is !
paintballed

Gathering 15 Gathering +2 Able to gather even more from mining spot or !
gathering point

10 Gathering +1 Able to gather more from mining spot or gathering !
point

-10 Gathering -1 Gathers less from mining spot or gathering point

-15 Gathering -2 Gathers even less from mining spot or gathering !
point

Carving 20 Carving Celebrity Unaffected by minor attacks when carving and able to
! carve 1 more time
10 Carving Iron Man Unaffected by minor attacks when carving

HiSpdGathr 10 High Speed Gathering Gathering and mining speed increased

Backpackng 10 Backpacking Expert Able to move faster when moving with carry items

Whim 15 Spirit's Whim Even lesser chance of breaking bugnet or pickaxe
10 Divine Whim Lesser chance of breaking bugnet or pickaxe
-10 Spectre's Whim Greater chance of breaking bugnet or pickaxe
-15 Demon Whim Even greater chance of breaking bugnet or pickaxe

Fishing 10 Fishing Expert More time is given when angling a fish

Heat Res 15 Heat Cancel [Hi] Immune to heat effects in all areas
10 Heat Cancel [Lo] Immune to heat effects in certain areas
-10 Heat Inc [Lo] Health decreases faster due to heat effects
-15 Heat Inc [Hi] Health decreases even faster due to heat effects

Cold Res 15 Cold Elimination[Hi] Immune to cold effects in all areas
10 Cold Elimination[Lo] Immune to cold effects in certain areas
-10 Heat Inc [Lo] Stamina decreases faster due to cold effects
-15 Heat Inc [Hi] Stamina decreases even faster due to cold effects

Terrain 15 TrrainDmgeReduce[Hi] Damage from terrain is reduced significantly
10 TrrainDmgeReduce[Lo] Damage from terrain is reduced
-10 TerrainDamageInc[Hi] Damage from terrain is increased significantly
-15 TerrainDamageInc[Lo] Damage from terrain is increased

Stamina 10 Stamina Stamina decreases more slowly for running and
attacks

Technique 15 Defensive Maneuvers +2 Stamina usage is lessened even more when rolling, !
backhopping and sidestepping

10 Defensive Maneuvers +1 Stamina usage is lessened when rolling,
backhopping ! and sidestepping

-10 Defensive Maneuvers -1 Stamina usage is increased when rolling,
backhopping ! and sidestepping

-15 Defensive Maneuvers -2 Stamina usage is increased even more when
rolling, ! backhopping and sidestepping

Hunger 15 Hunger Negated Stamina bar does not decrease over time
10 Hunger Halved Stamina bar decreases x0.5 slower over time
-10 Hunger Increase [Lo] Stamina bar decreases x1.5 faster over time
-15 Hunger Increase [Hi] Stamina bar decreases x2 faster over time

Sneak 10 Stealth Decreases chance of being targeted by monster
-10 Taunt Increases chance of being targeted by monster

Fate 15 Luck Booster Greater chance of increased rewards
10 Good Luck Chance of increased rewards
-10 Bad Luck Chance of decreased rewards
-20 Calamity Greater chance of decreased rewards

Set Trap 10 Trap Expert Faster speed of setting traps

Trapper 15 Reward Celebrity Greater chance of increased rewards for
capturing
10 Reward Specialist Chance of increased rewards for capturing

Observance 10 Eagle Eye Able to see when monster's health is low enough to !
be captured

Recovery 10 HealthRecItemsImprvd Healing items have increased effectiveness
-10 HealthRecItemsWeak Healing items have decreased effectiveness

Everlastng 10 Item Usage Improve Consumed effect items have increased duration
-10 Item Usage Decline Consumed effect items have decreased duration

Wide Area 20 Wide Area +2 Certain usable items have full effect on others in !
the same area

10 Wide Area +1 Certain usable items have half effect on others
in ! the same area

Throw 10 Throwing Skill Up Increased distance for throwing items

BombStrUp 10 Bomber Increases the damage of bombs by 50%

Gluttony 15 Picky Eater Chance of healing items also increasing stamina
10 Filled Up Chance of fish steaks increasing stamina

Cooking 10 Quick Eating Increased speed of consuming items
-10 Slow Life Decreased speed of consuming items

BBQ 10 BBQ Celebrity Makes cooking steaks easier
-10 So-Called BBQ King Makes cooking steaks more difficult

Horn 10 Flute Expert Flutes break less easily and hunting horn effects !
gain increased duration

MixSucRate 20 Combine Success +45% Increases combination success rate
15 Combine Success +25% Increases combination success rate
10 Combine Success +15% Increases combination success rate
-10 Combine Success -5% Decreases combination success rate
-15 Combine Success -10% Decreases combination success rate
-20 Combine Success -15% Decreases combination success rate

Shot Mix 10 Bullet Limit Maximizes ammo combination amount

Alchemy 10 Alchemy Allows for Alchemy Combinations

FlyneGuide 15 Felyne Mentor Increases Felyne Fighter's experience and skill !
points received after quests
10 Felyne Tutor Increases Felyne Fighter's experience after quests

Flyne Atk 10 Felyne Attack UP Increases Felyne Fighter's attack

Flyne Def 10 Felyne Defense UP Increases Felyne Fighter's defense

Torso Inc - - Doubles both negative and positive attributes of !
torso armor