Dungeons and Dragons – Mystara
Magical Item – Elemental Gem – Onyx
- Type: Wondrous Item (Expendable)
- Rarity: Uncommon, Geansi (Water) Relic
- Original Source: Dungeon Masters Guide (dmg167) GM Variant
- Base Item
- Campaign Examples
- Original Item
- Content Updates

Base Item – Elemental Gem – Onyx
Uncommon Item Value
Price: (1d6) x100 gp (100 to 600 gp) – 50% for consumable items
Base Price: 400 gp or 200 gp for expendable
Expendable Items can be attuned on use, at the cost of a random attuned item and slot.
Cursed Items auto attune on use and replace a random attuned item and slot.
Magical Items
C – Common, U – Uncommon, R – Rare, VR – Very Rare, L – Legendary, A – Artefact, Cu – Cursed
Racial Items Link
Dragonkind, Dwarven, Elven, Genasi, Giant, Gnome, Halfling, Human
- Magical Item – Uncommon – Elemental Gem – Onyx – 200 gp
- Standard: This gem contains a mote of elemental energy. When you use an action to break the gem, an elemental is summoned as if you had cast the conjure elemental spell, and the gem’s magic is lost. This gem summons an Shadow.
- Attunement: While you are attuned to this item you can speak primordial and once commune with the elemental gods or those of the Sphere of Entropy with the expectation that answers come with a price usually in the form of a quest which them consumes the item.
- Relic: If you are a genasi then you can use this item to reduce the soul burn of a darkologist secret craft by 1 consuming the item.
- If you are an dark genasi then you can use this to allow you and up to five allies to move through darkness at your walking speed while presenting it before you like a holy symbol, once you stop moving the item crumbles to dust.
Example Campaign Items – Elemental Gem – Emerald
Original Item – Elemental Gem
Source: Dungeon Masters Guide (dmg167)
ELEMENTAL GEM
Wondrous item, uncommon
This gem contains a mote of elemental energy. When you use an action to break the gem, an elemental is summoned as if you had cast the conjure elemental spell, and the gem’s magic is lost. The type of gem determines the elemental summoned by the spell.
- Gem – Summoned Elemental
- Blue sapphire – Air elemental
- Yel low diamond – Earth elemental
- Red corundum – Fire elemental
- Emerald – Water elemental
Content Updates
- 2021-07-25 – Added in Original Item version, realigned the elements with the associated colours as per the spheres and how they are set up to work.
Magical Items
Magical Items in Mystara Overview, Campaign Items, Creating Unique Items
Downtime Buying and Selling Items or Crafting Items
Types: Armour, Blessings, Books, Charm, Epic Boons, Marks of Prestige, Potion, Ring, Rod, Rune, Scroll, Staff, Wand Overview, Weapon, Wondrous Items
Relics of: Dragonkind, Dwarves, Elven, Genasi, Giantkind, Gnome, Halfling, Human
Tuesday Items: T001, T002, T003, T004, T005, T006, T007, T008, T009, T010, T011, T012, T013, T014, T015, T016, T017, T018, T019, T020, T021, T022, T023, T024, T025, T026, T027, T028, T029, T030, T031, T032, T033, T034, T035, T036, T037, T038, T039, T040, T041, T042, T043, T044, T045, T046, T047, T048, T049, T050, T051, T052, T054, T055, T056, T057, T058, T059, T060, T061, T062, T063, T064, T065, T066, T067, T068, T069, T070, T071, T072, T073, T074, T075
Wednesday Items: W001, W002, W003, W004, W005, W006, W007, W008, W009, W010, W011, W012, W013, W014, W015, W016, W017, W018, W019, W020, W021, W023, W024, W027, W028, W029, W030, W031, W032, W033, W034, W035, W038, W039, W040, W041, W042, W043, W044, W045, W047, W048, W049, W050, W051, W052, W054, W055, W056, W058, W059, W061, W062, W063, W064, W065
Friday Items: F002, F005, F006, F007, F008, F009, F010, F012, F014, F016, F019, F025, F026, F027, F028, F029, F030, F031, F032, F033, F034, F035, F036, F037, F038, F039, F040, F041, F042, F043, F044, F047, F048, F049, F050, F051, F052, F054, F055
D&D 5E in Mystara
D&D Menu – Adventures, Artefacts, Backgrounds, Classes, Dominions, Downtime, Feats, Gazetteers, Gods, Magical Items, Monsters, Organisations, Pantheons, Races, Ranks & Titles, Rune Magic, Secret Crafts, Settlements, Spells, Timeline, Weapons Mastery
Game Management – Annotated Stat Block, Character Creation, Choosing a New Campaign, Gaming over Skype, GM’s Luck Roll, Tracking Experience
Class Builds –
Artificer – Bombardier (Tinkerkin),
Barbarian – Totem Warrior (Plamin, Camdu),
Bard – College of Valour (Sunfey),
Druid – Circle of Dreams (Woodfey), Circle of the Tree of Life (Seasonfey),
Fighter – Battlemaster (Seashire), Eldritch Knight (Kerendan), Weapons Master (Lani), Weapons Master (Stonebound),
Monk – Way of the Elements (Tidal),
Paladin – Oath of Radiance (Sunfey), Oath of Vengeance (Firechild),
Sorcerer – Wild Magic (Shadowfey),
Warlock – Celestial (Llewell),
Wizard – Bladesinger (Nerye),
Dragon – White (Calcryx).
Multiclass – Cleric/Wizard (Xhall), Rogue/Cleric (Dracnomir), Rogue/Sorcerer (Yodrey), Wizard/Rogue (Traladaran)
Floorplans – Thyatian
Session Recordings – Campaign Journals
Library of Books
B5, d20 System, Pathfinder, SW

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