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Name: Jewel Miner
Type: Monster
Attribute: Earth
Monster Type: Warrior/tuner
Level: 3
Atk: 1000
Def: 2000
Effect: This card gains 100 Atk and Def per Jewel Card on the field. Once per turn this card can add to or reduce it's level equal to the number of Jewel Monsters on the field

Name: Jewel Beast: Ruby
Type: Monster
Attribute: Fire
Monster Type: Rock
Level: 4
Atk: 1500
Def: 1500
Effect: When this card is summoned successively, add 1 Jewel Beast: Emerald from your deck to your hand. When this card is destroyed by card effect or battle, special summon 1 Jewel Beast: Emerald to the field from your hand.

Name: Jewel Beast: Emerald
Type: Monster
Attribute: Wind
Monster Type: Rock
Level:4
Atk:1600
Def:1600
Effect: When this card is summoned successively, add 1 Jewel Beast: Sapphire from your deck to your hand. When this card is destroyed by card effect or battle, special summon 1 Jewel Beast: Sapphire to the field from your hand.

Name: Jewel Beast: Sapphire
Type: Monster
Attribute: Water
Monster Type: Rock
Level:4
Atk:1700
Def:1700
Effect: When this card is summoned successively, add 1 Jewel Beast : Diamond from your deck to your hand. When this card is destroyed by card effect or battle, special summon 1 Jewel Beast : Diamond to the field from your hand.

Name: Jewel Beast : Diamond
Type: Monster
Attribute: Light
Monster Type: Rock
Level: 4
Atk: 1800
Def:1800
Effect: When this card is summoned successively, add 1 “Ruby”,” Emerald” or “Sapphire” Jewel Beast from your deck to your hand. When this card is destroyed by card effect or battle, special summon 1 Jewel Beast: Onyx to the field from your Deck or Hand.

Name: Jewel Beast: Onyx
Type: Monster
Attribute: Dark
Monster Type: Rock
Level: 4
Atk: 1900
Def: 1900
Effect: This card cannot be Normal summoned or Set. This card cannot be special summoned except by the effect of "Jewel Beast : Diamond".When this card is summoned successively, add 1 “Jewel” card from your deck to your hand. When this card is destroyed by card effect or battle, special summon 1 "Jewel" monster to the field from your hand.

Name: Jewel Box
Type: Monster
Attribute: Earth
Monster Type: Rock
Level:7
Atk: 2600
Def: 2800
Effect: This card can only be Special Summoned by the effect of Jewel Beast: Onyx. This monster gains the following effects while each specific card is in the graveyard and may use one only once per turn with the exception of the effects gained from Diamond and Onyx.
Ruby – Inflict damage to the opponent’s life points in multiples of 200 per Jewel Beast Monster in the graveyard.
Emerald- Return Cards on the field equal to the number of Jewel Beasts in the graveyard.
Sapphire – Remove this card from play to special 5 Jewel Beasts from the graveyard to the field. They cannot be targeted by card effects until the end phase of this turn.
Diamond- This card cannot be targeted by card effects.
Onyx- This card gains attack equal to the total number of Jewel Beasts in the graveyard times 100

Name: Jewel Golem
Type: Monster
Attribute: Earth
Monster Type: Rock/ Fusion
Level: 10
Atk: 3500
Def: 4000
“Jewel Beast Ruby, Jewel Beast Emerald, Jewel Beast Sapphire, Jewel beast Diamond, Jewel Beast Onyx”
Effect: This card can only be special summoned from the extra deck by sending 3 or more of the listed cards from the field to the deck, you do not use polymerization. This card gains the following effects based on the jewel beasts used for the summon of this card.
Ruby- This card cannot be targeted by the effects of magic or trap cards.
Sapphire- If this card is destroyed by battle it is removed from play, you may then draw 1 card from your deck.
Emerald- Once per turn return 1 card on the Field to the top of the owner’s deck
Diamond- Once per turn you can permanently reduce the attack of all monsters on your side of the field by 1500 Attack points to attack directly.
Onyx- Once per turn remove from play 1 card on the Field

SPELLS

Name: Jewel Vein
Card Type: Field Spell
Effect: Jewel Card Effects cannot be negated. Once Per turn you may add one extra "Jewel Beast" to your hand or Normal Summon one extra "Jewel Beast" per turn. At the end End Phase of each of your turns, Discard one Jewel Beast from your hand or pay 500 Life points. If you do not, destroy this card.


Name: Jewel Polishing
Card Type: Normal Spell
Effect: Return up to 5 Jewel cards from the graveyard to the deck. The deck is then shuffled.

Name: Refinement of Jewel
Card Type: Continuous Spell Card
Effect: While this card is on the field, all Jewel Beast monsters gain 100 attack per Jewel Beast Monster in the graveyard.

Name: Jewel Crafter
Card Type: Normal Spell Card
Effect: Select up to two Jewel Beast Monsters on your side of the field. For the remainder of the duel they are treated as Synchro Monsters

Name: Jewel Confiscation
Card Type: Normal Spell
Effect: Pay 2000 Life points. Return 5 Jewel Beasts from the graveyard to the deck, Special summon 1 Jewel Golem from your extra deck ignoring the summoning condition. It gains 2 of it's conditionary effects while it is face up on the field.

Name: Jewel Sale
Card Type: Normal Spell
Effect: Destroy 1 Jewel Beast Monster on the field, Draw 2 cards.

TRAPS

Name: Jewel Mine
Card Type: Counter Trap
Effect: tribute a Jewel Beast Monster to negate the summon and/or effect of a card controlled by your opponent and send it to the graveyard. Then Special Summon the monster listed in the effect of the destroyed Jewel Beast Monster from your hand.

Name: Jewel Taxes
Card Type: Counter Trap
Effect: When a Jewel monster would be destroyed by battle or card effect, you can destroy all Jewel monsters on your side of the field to send cards on your opponents side of the field to the graveyard equal to the number of Jewel monsters you destroyed by this effect. Then Special summon the monsters listed in the destroyed Jewel Monster's card text from your hand, if applicable.

Name: Jewel Thieves
Card Type: Normal Trap
Effect: Destroy up to 5 Jewel Monsters on the field to activate the appropriate effect equal to the number of Jewel Monsters destroyed.
1- Return 2 cards on the field to the top of the owner's deck
2- Draw 2 cards
3- Return 2 random cards in your opponents hand to their deck and shuffle
4- Your opponent cannot normal summon or set a monster this turn
5- Your opponent cannot set spell or traps until the end phase of their next turn.

umm, jewel box can't be summoned, since gem beast: onyx doesn't say anything about summoning jewel box.

i think your archetype is a broken, as each one searches a stronger one when summoned, and then special summons it when destroyed. also might wanna change box of gems to gem box. because the s exludes it from the list of gem monsters summonable by onyx's effect.

also, rate my obsidian cards?

Updated and fixed some cards for wording and such.
Crayons meet Color Wheel lol

Gem beasts is a name already taken as the crystal beast Japanese name. By calling your cards gem beasts you are copyright infringing Konami, the FBI will break down your front door shortly.

OH SHI-

I was thinking Crystal Beasts meet Gadgets

updated