Platinum

Platinum was an valuable metallic element used in rings. Slicer and codebreaker Master Codebreaker wore a platinum ring during his stay at Canto Casino on Cantonica in 34 ABY.

Sources

The High Republic: Convergence (Unknown)

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The High Republic: Convergence audiobook (Unknown)

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The High Republic: Light of the Jedi (Mentioned only) (Unknown)

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The High Republic: Light of the Jedi audiobook (Mentioned only) (Unknown)

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The High Republic: Temptation of the Force (Unknown)

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Thrawn Ascendancy: Greater Good (Mentioned only) (Unknown)

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Thrawn Ascendancy: Greater Good audiobook (Mentioned only) (Unknown)

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Adventures in Wild Space: The Nest (First appearance) (Unknown)

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The Empire Strikes Back: So You Want to Be a Jedi? (First mentioned) (Unknown)

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The Empire Strikes Back: So You Want to Be a Jedi? audiobook (Mentioned only) (Unknown)

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Star Wars: Episode VIII The Last Jedi (Unknown)

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Star Wars: The Last Jedi: Expanded Edition (Unknown)

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Star Wars: The Last Jedi: Expanded Edition audiobook (Unknown)

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The Last Jedi Adaptation 3 (Unknown)

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