[Polantaris]

Credit goes to Shizuka

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Hunter Gems:
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=> You can get a hunter gem (the circular color that appears next to the hunter's name) once you are HR 17+ at Parone from カシラ(Kashira). The gem grows from the points that you get on caravan quests.
=> There are 8 hunter gem colors: peach (桃~momo）, brown (茶~cha), yellow　(黄~ki), green (緑~midori), white (白~shiro), purple [looks like blue] (紫~murasaki), water blue (水~mizu) and rainbow (虹~niji). The rainbow color has the effects of all the colors in one.
=> The color will change once a week after maintenance, and you can also change it to a random one by going to the hunter gem armory. There is also the possibility that your gem will randomly just change to rainbow for 24 hours every day at noon (1200 JST). In this case, the color will change to another random color the following noon. Every hunter in the game will have a chance for this special surprise at least once per month.
=> In order to have your gem grow, you need to clear caravan quests. You need to not only pay attention to your color but also the color of the other people you're questing with.
Example 1: Let's say you go with a party where there's peach, brown, yellow and green. Each of these colors has a set number, so you'd get the combined points of these numbers. However, if there's two peaches a yellow and a green, then of course whatever numer the peach is, you'd get it times two.
Example 2: Once again, let's assume there's two peaches a yellow and a green. In the final screen, the two peaches would be combined together. So if everyone gets 1 point each, it would look like this: peach +2 yellow +1 and green +1

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Caravan Quests:
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=> You can post caravan quests from the guild lady in green in Parone.
=> Quests are cleared almost like the PSP one, but you need to clear each one to unlock the urgent.
=> Quests are designed "Marathon-styled" like in MHP2G.
=> Quests range from 0 stars to 8 stars.
=> Everything you gather or carve in quests are replaced with CP (Caravan Points).
=> Hunters do not share deaths to fail a quest. This means that if you die a certain number of times, only you will be booted from the quest instead.
=> There is a daily caravan quest system (last caravan quest option from the lady in green). Once you clear all of the normal caravan quests (from 0 to 8 stars), you are allowed access the daily caravan quests. There is one daily caravan quest, and a couple other random starred quest per day and will change every noontime (1200 JST). Here is a calendar list of all the daily caravan quests: http://www.mhfblog.net/playdiary/490
Listed along with that calendar is a "bonus" day, which affects. Here are the types of bonuses you can get:
大錬珠節 = More color points will be rewarded at the end of the quest.
大還元節 = Rare items will be awarded from doing special missions.
大報酬節 = The number of rewards at the end of the quest will increase.
大推挙節 = Caravan experience points will increase.

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Clear Bonus:
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=> If you go through the entire quest without dropping out (even if you're returned to the town, if you choose the option "yes - to continue with the quest" this will still count) then you will get an "Everything Clear Bonus" which will increase the points that you get.
=> In the event that you return to the town halfway through but the players did not choose to leave the quest, then they will still receive the bonus when they finish the entire thing. If you go back to the balloon between quests, you can buy supplies from the guy using CP. If you go back to the town, you can change weapons and you can buy more supplies, but you can't leave the area.
=> Also, if you're able to complete many of your special missions then you'll get a special mission bonus, which will also increase the points you receive. A special mission is basically like "Simon Says" where you would do whatever the game tells you to do within a certain time limit to get the bonus. You'll always get 500 cp or a special item for each special mission you complete.

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Caravan Hunter Gem Skills:
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=> When you've reached a certain amount of points, then you'll get a special hunter skill. This skill is based only on the amount of points but if you only have so many points in one color, then you might not be able to get the skill you want. So for example, let's take person A:
peach 127, brown 111, yellow 259, green 182, white 198, purple 171, water blue 58
So with all your gems combined, he would be able to get the Courage skill which is unlocked at 37 points of all the colors. A complete list of skills is listed in the next post.

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Equipping Caravan Hunter Skills
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=> In order to access/change your hunter gem skills, you can go to: your house, the armory, the guild's changing room, the caravan's changing room. From the main menu of the weapon box: Change Equipment > Caravan Hunter Gem Skills (装備を変更する > 狩人珠スキル装着). From this menu you can select the skill and set it. You can set up to 3 skills at a time and the cost of all the skills combined must be 10 or less. The cost of each skill is shown to the right in the window.

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Parone Unlockables
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Lounge, Hunter Gem Blacksmith/Armory, CP Item Shop, Welcoming Center
=> You won't be able to enter the very back of the caravan town until you rank up to 「よく働く狩人」 (yes, you get caravan "experience points" as well) at which point you'll be able to enter the lounge. In the lounge is where you can buy lounge lunchboxes, which are stronger than normal lunch boxes, and which cost CP, not money.
=> When you get to this rank 「見覚えのある狩人」 you'll be able to enter the welcoming center, which is where the hunter gem blacksmith/armory and the CP item shop is located. The shop sells hr 100/caravan only items as well.
=> Once you rank up a certain level, you can access the top level of the welcoming center. If you pay the fat caravan dude, you get some sort of caravan quest power up by paying CP. Waste of CP in my opinion.

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The Hunter Gem Armory
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=> The blacksmith can perform 3 tasks to choose from:
-Maintain your Hunter Gem (狩人珠のおていれ). Details below.
-Level up your Hunter Gem (狩人珠の強化). Details below.
-Randomize your Hunter Gem color (おまかせ色変更！). 80000 CP. This will immediately change the color. However, it is random. There is a small possibility that your gem will turn into rainbow color.

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Maintaining Hunter Gems
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=> When you strengthen a gem, after a certain amount of time passes, the value of the gem will go down and it will deteriorate, which means the effectiveness will go down as well. A date and time will appear in your status page below your hunter gem colors when it will deteriorate. If you do not maintain, your points will go down once in every 24 hours. Because of this, it's necessary to take your gem to the hunter jewel armory for maintenance 「おていれ」. If you do not power up your jewel (it means that you stay at level 1), you don't have to worry about this side effect.
=> Here are the prices for maintenance, and they become more expensive at higher levels and longer weeks of maintenance (maintenance orders do not stack!):
Hunter Gem Level / 1 week / 2 weeks/ 3 weeks
Hunter Gem Lv2 / 10000 CP / 20000 CP / 30000 CP
Hunter Gem Lv3 / 20000 CP / 40000 CP / 60000 CP
Hunter Gem Lv4 / 30000 CP / 60000 CP / 90000 CP
Hunter Gem Lv5 / 40000 CP / 80000 CP / 120000 CP
Hunter Gem Lv6 / 50000 CP / 100000 CP / 150000 CP
Hunter Gem Lv7 / 60000 CP / 120000 CP / 180000 CP
=> Note: It is hell of a lot cheaper to do weekly maintenance, but easier to forget to do so at times. If your gem colors goes to zero, it stays at zero without maintenance and does not lower you hunter gem level.

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Leveling up Hunter Gems
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=> In the hunter gem armory you can power up your gems as well as add new skills to the ones you can pick. However, in order to do this, you not only need CP, but you also need max points in all of the 7 colors for your current level.
=> Keep in mind that at the moment you can only strengthen the jewels 7 times, however, most likely more skills will come out/they will be able to get stronger after future updates.
=> One thing to keep in mind when powering up the jewels, when you do this all the points that were saved up for your colors are reset (all are set back to zero!). That means all of your skills will vanish too, but better skills are obtained at higher levels.
=> Here is the list of cost for every level up:
Level - Cost - Requirement:
Hunter Gem Lv2 / 200000CP / Need 「見覚えのある狩人」 rank and 259 gem points max.
Hunter Gem Lv3 / 400000CP / Need Hunter Gem Lv2 and 703 gem points max.
Hunter Gem Lv4 / 1000000CP / Need Hunter Gem Lv3 and 777 gem points max.
Hunter Gem Lv5 / 2000000CP / Need Hunter Gem Lv4 and 777 gem points max.
Hunter Gem Lv6 / 3000000CP / Need Hunter Gem Lv5 and 814 gem points max.
Hunter Gem Lv7 / 4000000CP / Need Hunter Gem Lv6 and 851 gem points max.

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Summary:
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=> Get your color from Kashira at HR 17+.
=> Farm caravan quests until you unlock more quests, and level up to access the welcoming center.
=> Farm until your hunter gem is maxed to 259.
=> Once all of your colors are maxed, upgrade your hunter gem level. You need maintenance if you have a level 2 and up hunter gem.
=> Farm more points to get more skills. Upgrade again once done or farm more CP in needed to do so.
=> And the process goes on and on, I would suggest clearing up all of the caravan quests, besides farming quest 101 (which is the easiest way to get colors), to access daily caravan quests (like Mira Trio) to get massive CP. You can also get caravan stones in the process to create caravan weapons.
Hunter Gem Skills

=> Notes: For example, once you have Hunter Gem level 3, you also have the skills for lvl 1 and 2, but you still need to have the necessary hunter gem points. You can also only equip 3 skills at a time and have a total cost of 10 or less.

Level 1 Hunter Gem Skills (259 Max Hunter Gem Points):
Skill Name / Cost / Necessary Hunter Gem Points / Effect
医療術(Rec Items Up) / 1 / 0 / Herb, Potion, Mega Potion, Lifepowder effect is up by 1.1x, 100% Bitterbug and Antidote Herb effectiveness.
鈍器殴打術(Blunt Striker) / 1 / 1 / Bowgun melee damage does 15 damage.
胆力(Courage) / 1 / 37 / When you see a monster, you won't get scared.
着地術(Lander) / 2 / 74 / When you jump down from somewhere high, your legs won't tremble and if you are carrying an egg, you won't drop it.
ツタ登りの超人(Vine Superhero) / 3 / 111 / The stamina consumption while quickly climbing a vine will decrease.
採掘の達人(Miner) / 3 / 148 / The probability that your pick will break will go down.
虫取りの達人(Bug Master) / 3 / 185 / The probability that your bug net will break will go down.
ツタ登りの達人(Vine Master) / 3 / 222 / Even if you take damage while climbing on a vine, you won't fall.

Level 2 Hunter Gem Skills (703 Max Hunter Gem Points):
Skill Name / Cost / Necessary Hunter Gem Points / Effect
調合術【小】(Mixing Technique [Sm]) / 3 / 296 / Your combining success rate goes up by 10%.
起き上がり術【小】(Riser [Sm]) / 3 / 333 / Your invincibility time while getting up is increased by 1.5x.
マイトレ名人【小】(My Tore Celebrity [Sm]) / 0 / 370 / You'll become more favorable to the three sisters by 1.5x.
究極自然回復術【小】(Natural Recovery [Sm]) / 10 / 407 / The red damage gauge of your health will be healed by performing the action 「寝る」 "sleep" （Up to 5 times per quest）.
剥ぎ取り達人【小】(Master Carver [Sm]) / 10 / 444 / When you carve, there is a 1/10th chance that you will carve a rare material (Up to 10 times per quest).
へそくり回復術【小】(Secret Healing Technique [Sm]) / 5 / 481 / There is a 1/12th chance of not "consuming" a healing item when used (Up to 5 times per quest).
値引き交渉術【小】(Negotiation [Sm]) / 0 / 518 / There will be a 1/8th chance that you will get a 10% discount from spending money (From item shops or your rocket cat).
ギャラリー名人【小】(Gallery Celebrity [Sm]) / 0 / 555 / You will earn 5,000 My Gallery bonus points per evaluation.
ガーデン名人【小】(Garden Celebrity [Sm]) / 0 / 592 / Items received at My Garden from the Straw Hat Cat goes up by 1.2x (except Nyaka pots).
土壇場エース【小】(Last Minute Ace [Sm]) / 7 / 629 / Within the last 5 minutes of a quest, your critical hit will be 80% (But you will take 1.3x the damage).
女神の幸運【小】(Goddess of Luck [Sm]) / 10 / 666 / There is a 1/10th chance that you will receive zero damage when damaged. (Up to 5 times per quest).

Level 3 Hunter Gem Skills (777 Max Hunter Gem Points):
Skill Name / Cost / Necessary Hunter Gem Points / Effect
調合術【中】(Mixing Technique [Med]) / 3 / 259 / Your combining success rate goes up by 15%.
起き上がり術【中】(Riser [Med]) / 3 / 296 / Your invincibility time while getting up is increased by 2x.
マイトレ名人【中】(My Tore Celebrity [Med]) / 0 / 333 / You'll become more favorable to the three sisters by 2x.
究極自然回復術【中】(Natural Recovery [Med]) / 10 / 370 / The red damage gauge of your health will be healed by performing the action 「寝る」 "sleep" （Up to 10 times per quest）.
剥ぎ取り達人【中】(Master Carver [Med]) / 10 / 407 / When you carve, there is a 1/9th chance that you will carve a rare material (Up to 15 times per quest).
へそくり回復術【中】(Secret Healing Technique [Med]) / 5 / 444 / There is a 1/11th chance of not "consuming" a healing item when used (Up to 5 times per quest).
値引き交渉術【中】(Negotiation [Med]) / 0 / 518 / There will be a 1/8th chance that you will get a 15% discount from spending money (From item shops or your rocket cat).
ギャラリー名人【中】(Gallery Celebrity [Med]) / 0 / 555 / You will earn 7,000 My Gallery bonus points per evaluation.
ガーデン名人【中】(Garden Celebrity [Med]) / 0 / 592 / Items received at My Garden from the Straw Hat Cat goes up by 1.3x (except Nyaka pots).
土壇場エース【中】(Last Minute Ace [Med]) / 7 / 629 / Within the last 5 minutes of a quest, your critical hit will be 90% (But you will take 1.3x the damage).
女神の幸運【中】(Goddess of Luck [Med]) / 10 / 666 / There is a 1/9th chance that you will receive zero damage when damaged. (Up to 10 times per quest).
自然の達人【暑】(Heat Nature Master) / 5 / 684 / No health loss from hot weather.
自然の達人【寒】(Cold Nature Master) / 5 / 702 / No stamina loss in cold weather.
○○術【小】([One of the 11 weapons] Art [Sm]) / 7 / 740 / Gives your weapon of choice a 1.01x attack boost.

Level 4 Hunter Gem Skills (777 Max Hunter Gem Points):
Skill Name / Cost / Necessary Hunter Gem Points / Effect
調合術【大】(Mixing Technique [Lg]) / 3 / 259 / Your combining success rate goes up by 20%.
起き上がり術【大】(Riser [Lg]) / 3 / 296 / Your invincibility time while getting up is increased by 3x.
マイトレ名人【大】(My Tore Celebrity [Lg]) / 0 / 333 / You'll become more favorable to the three sisters by 3x.
究極自然回復術【大】(Natural Recovery [Lg]) / 10 / 370 / The red damage gauge of your health will be healed by performing the action 「寝る」 "sleep" （Up to 15 times per quest）.
剥ぎ取り達人【大】(Master Carver [Lg]) / 10 / 407 / When you carve, there is a 1/8th chance that you will carve a rare material (Up to 20 times per quest).
へそくり回復術【大】(Secret Healing Technique [Lg]) / 5 / 444 / There is a 1/10th chance of not "consuming" a healing item when used (Up to 5 times per quest).
値引き交渉術【大】(Negotiation [Lg]) / 0 / 481 / There will be a 1/8th chance that you will get a 25% discount from spending money (From item shops or your rocket cat).
ギャラリー名人【大】(Gallery Celebrity [Lg]) / 0 / 518 / You will earn 10,000 My Gallery bonus points per evaluation.
ガーデン名人【大】(Garden Celebrity [Lg]) / 0 / 555 / Items received at My Garden from the Straw Hat Cat goes up by 1.5x (except Nyaka pots).
土壇場エース【大】(Last Minute Ace [Lg]) / 7 / 592 / Within the last 5 minutes of a quest, your critical hit will be 100% (But you will take 1.3x the damage).
女神の幸運【大】(Goddess of Luck [Lg]) / 10 / 629 / There is a 1/8th chance that you will receive zero damage when damaged. (Up to 20 times per quest).
○○術【中】([One of the 11 weapons] Art [Med]) / 7 / 740 / Gives your weapon of choice a 1.025x attack boost.

Level 5 Hunter Gem Skills (814 Max Hunter Gem Points):
Skill Name / Cost / Necessary Hunter Gem Points / Effect
○○術【大】([One of the 11 weapons] Art [Lg]) / 7 / 740 / Gives your weapon of choice a 1.05x attack boost.
おまけ術(Bonus Art) / 5 / 777 / Food Effect is not lost after fainting.

Level 6 Hunter Gem Skills (851 Max Hunter Gem Points):
Skill Name / Cost / Necessary Hunter Gem Points / Effect
ＫＯ術(KO Technique) / 3 / 129 / Increases the stun effect of Hammers and Hunting Horns by 1.1x.
舞踏術(Art of Dancing) / 2 / 388 / Performing the action 「おどる」 "dance" for 5 seconds will give you a 10 attack power boost for one minute.
ゆらぎの守り【小】(Unstable Defender [Sm]) / 5 / 499 / 90% reduction of damage and 20% chance of zero damage when guarding.
奮起の攻め【小】(Rousing Attacker [Sm]) / 5 / 610 / When you attack a monster who has 50% health or less, there is a 40% chance that you will gain 10 hp. (Up to 10 times per quest).
刹那の守り【小】(Just Defended [Sm]) / 3 / 720 / When you block just in time to guard a monster's attack, you will have no decrease in stamina and sharpness and there will be no knockback. Also, at the moment after blocking, "Guard Cancel" can be performed, which is an immediate evasive movement right after the block.
リベンジ！【小】(Revenge! [Sm]) / 5 / 814 / When getting up from a monster's attack, there is a chance of gaining a 25 attack power boost, a 50 defense power boost, and Super Armor (armor pill's no semi-knockback effect) for 20 seconds. The higher that damage is taken, the more likely this will occur.

Level 7 Hunter Gem Skills (851 Max Hunter Gem Points):
Skill Name / Cost / Necessary Hunter Gem Points / Effect
暴れ撃ち(Shooting Rampage) / 7 / 240 / Bowgun and Bow gets a 1.1x attack power boost, jiggle of bowguns goes up by 1.5x.
ゆらぎの守り【中】(Unstable Defender[Med]) / 5 / 499 / 90% reduction of damage and 25% chance of zero damage when guarding.
奮起の攻め【中】(Rousing Attacker[Med]) / 5 / 610 / When you attack a monster who has 50% health or less, there is a 40% chance that you will gain 10 hp. (Up to 15 times per quest).
刹那の守り【中】(Just Defended [Med]) / 3 / 720 / When you block just in time to guard a monster's attack, you will have no decrease in stamina and sharpness and there will be no knockback. Also, at the moment after blocking, "Guard Cancel" can be performed, which is an immediate evasive movement right after the block. It is much easier to trigger this skill than with the [Sm] version.
リベンジ！【中】(Revenge! [Med]) / 5 / 814 / When getting up from a monster's attack, there is a chance of gaining a 25 attack power boost, a 50 defense power boost, and Super Armor (armor pill's no semi-knockback effect) for 20 seconds. The higher that damage is taken, the more likely this will occur. Occurs more often than the [Sm] version.