Doctor Who
Object

Madranite Crystals

Vivien Fay’s crystals hum faintly as the Doctor inserts them into his jury-rigged hyperspace device, their innate energy reacting visibly to the machine’s crude wiring. The transparent shards catch light in prismatic blue-white glints, their resonant vibration audible only when pressed near the jury-rigged equipment. K9 identifies their perilous instability—overheating in under thirty seconds—a flaw the Doctor acknowledges but dismisses in his haste to escape. The crystals burn with ancient power, their surface smooth yet marred by faint striations from geological time.
3 appearances

Appearances in the Narrative

When this object appears and how it's used

3 moments
S16E11 · The Stones of Blood Part 3
Calculating hyperspace escape dangers

The Doctor drops Vivien’s madranite crystals into the central chamber of the device, causing it to gurgle ominously like an electronic drain. The crystals’ prismatic energy pulses visibly as they activate the machine’s core, their violet striations catching the dim cottage light.

Before: Stored dry in Vivien’s earthenware jar, their latent power untapped until this moment of crisis
After: Exhausted and overheating, glowing faintly as they near the end of their thirty-one-second lifespan
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S16E11 · The Stones of Blood Part 3
Final assembly of the hyperspace window

The madranite crystals, transparent blue-white shards with faint striations, are pressed into the central chamber of the device, their energy reacting visibly to the crude wiring. K9 identifies their perilous instability, but the Doctor dismisses their limitations in haste, gambling their power against the ticking clock.

Before: Stored dry in Vivien’s earthenware jar, their energy latent and untested.
After: Integrated into the machine, their prismatic facets pulsing with unstable hyperspace energy as the device’s countdown begins.
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S16E8 · The Pirate Planet Part 4
Nurse commands start of immortality ritual

The Madranite crystals, clustered in a triangular formation labeled 'one five,' are placed into the machine’s loading tray by Fibuli. Their segmented prisms catch the dim light as they activate, becoming focal converters for the siphoning ritual’s energy flow.

Before: Stored and prepared for deployment, their glow faint and inactive.
After: Secured in the machine, their energy pulsing faintly blue as the ritual begins to draw power from the surroundings.
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