PoE Grand Spectrum Cobalt Jewel: Minimum Power Charges

PoE 3.19 added six new Grand Spectrum jewels. Grand Spectrum is the name shared by nine different unique jewels that each grant scaling bonuses based on the number of jewels called ‘Grand Spectrum’ placed into jewel sockets on the character’s passive skill tree.

List of Grand Spectrum jewels

Image	Name & Stats	Trade Search
	Grand Spectrum (Cobalt Jewel, minion crit multi) Minions have +10% to Critical Strike Multiplier per Grand Spectrum	Search
	Grand Spectrum (Cobalt Jewel, power charge) +1 to Minimum Power Charges per Grand Spectrum	Search
	Grand Spectrum (Cobalt Jewel, crit chance) 25% increased Critical Strike Chance per Grand Spectrum	Search
	Grand Spectrum (Crimson Jewel, resistance) +7% to all Elemental Resistances per Grand Spectrum	Search
	Grand Spectrum (Crimson Jewel, endurance charge) +1 to Minimum Endurance Charges per Grand Spectrum	Search
	Grand Spectrum (Crimson Jewel, life) 5% increased Maximum Life per Grand Spectrum	Search
	Grand Spectrum (Viridian Jewel, ailment avoidance) 12% chance to Avoid Elemental Ailments per Grand Spectrum	Search
	Grand Spectrum (Viridian Jewel, frenzy charge) +1 to Minimum Frenzy Charges per Grand Spectrum	Search
	Grand Spectrum (Viridian Jewel, elemental damage) 15% increased Elemental Damage per Grand Spectrum	Search

Jewel limit: A character can’t have more than three ‘Grand Spectrum’ jewels socketed. This limit is shared across all ‘Grand Spectrum’ jewels. For example, if a character has 3 Cobalt Grand Spectrum jewels socketed in their passive tree, they cannot use any Viridian or Crimson Grand Spectrum jewels.

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Grand Spectrum Mechanics

The total magnitude M_t of the bonuses granted by socketed Grand Spectrum jewels of type t is:

M_t = b_t × n_t × g

• b_t is the nominal magnitude of the bonuses granted by Grand Spectrum jewels of that type
• n_t is the number of socketed Grand Spectrum jewels of that type
• g is the total number of socketed Grand Spectrum jewels

For example: if plaer has 1× Grand Spectrum(Cobalt Jewel, crit chance) and 2× Grand Spectrum (Viridian Jewel, elemental damage). This would result in:

• 25 * 1 * 3 = +75% increased Critical Strike Chance
• 15 * 2 * 3 = +90% increased Elemental Damage

Maximum Values

If you equip all three Grand Spectrum of any type, you can use the following table, simply select the number of Grand Spectrum of the given type you intend to equip, and add the results:

Grand Spectrum (Cobalt Jewel, power charge)

Grand Spectrum is a unique Cobalt Jewel. Limited to: 3 +1 to Minimum Power Charges per Grand Spectrum Flavour text: A mind that never quiets. Place into an allocated jewel socket on the passive skill tree. Right click to remove from the socket.

Power Charges

Power charges are one of the three charge types. They grant a temporary buff associated with intelligence and represent an increase to concentration and arcane energies during combat. They are visualized as glowing blue orbs surrounding the character. Gaining a new power charge resets the duration of all remaining power charges.

Effects on monsters and minions

The effects of power charges are much more significant on monsters and minions. Note that player totems themselves cannot gain or have power charges.

• 200% increased Critical Strike Chance per Power Charge