Peter Blinn’s Curious Notions | Featured this week: Ten of the world’s strangest gemstones & minerals

Peter Blinn's Curious Notions

Peter Blinn's Curious Notions

Friday 17 July 2026

Julian day 2461239.3274

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Now available in soft cover and PDF:
The Twelve Months of the Year in 850 Languages and Dialects
(Mostly Ones You’ve Probably Never Heard Of)

Remarkable colors

Remarkable colors

Remarkable colors

<span class="caption-promos"><a href="./remarkable-colors" target="_blank">Remarkable colors</a></span>

<span class="caption-promos"><a href="./remarkable-colors" target="_blank">Remarkable colors</a></span>

<span class="caption-promos"><a href="./remarkable-colors" target="_blank">Remarkable colors</a></span>

World’s rarest metals

World’s rarest metals

World’s rarest metals

<span class="caption-promos"><a href="./rarest-metals" target="_blank">World’s rarest metals</a></span>

<span class="caption-promos"><a href="./rarest-metals" target="_blank">World’s rarest metals</a></span>

<span class="caption-promos"><a href="./rarest-metals" target="_blank">World’s rarest metals</a></span>

$Roman fraction converter$

$Roman fraction converter$

$Roman fraction converter$

$<span class="caption-promos"><a href="./roman-fraction-converter" target="_blank">Roman fraction converter</a></span>$ $<span class="caption-promos"><a href="./roman-fraction-converter" target="_blank">Roman fraction converter</a></span>$ $<span class="caption-promos"><a href="./roman-fraction-converter" target="_blank">Roman fraction converter</a></span>$

World’s rarest gemstones

World’s rarest gemstones

World’s rarest gemstones

<span class="caption-promos"><a href="./rarest-gemstones" target="_blank">World’s rarest gemstones</a></span>

<span class="caption-promos"><a href="./rarest-gemstones" target="_blank">World’s rarest gemstones</a></span>

<span class="caption-promos"><a href="./rarest-gemstones" target="_blank">World’s rarest gemstones</a></span>

73 temperature conversions

73 temperature conversions

73 temperature conversions

<span class="caption-promos"><a href="./temperature-converter" target="_blank">73 temperature conversions</a></span>

<span class="caption-promos"><a href="./temperature-converter" target="_blank">73 temperature conversions</a></span>

<span class="caption-promos"><a href="./temperature-converter" target="_blank">73 temperature conversions</a></span>

<i>Strangest</i> gemstones

<i>Strangest</i> gemstones

<i>Strangest</i> gemstones

<span class="caption-promos"><a href="./strangest-gemstones" target="_blank"><i>Strangest</i> gemstones</a></span>

<span class="caption-promos"><a href="./strangest-gemstones" target="_blank"><i>Strangest</i> gemstones</a></span>

<span class="caption-promos"><a href="./strangest-gemstones" target="_blank"><i>Strangest</i> gemstones</a></span>

Word of the week

Word of the week

Word of the week

<span class="caption-promos"><a href="./weird-word" target="_blank">Word of the week</a></span>

<span class="caption-promos"><a href="./weird-word" target="_blank">Word of the week</a></span>

<span class="caption-promos"><a href="./weird-word" target="_blank">Word of the week</a></span>

Holy Grails

Holy Grails

Holy Grails

<span class="caption-promos"><a href="./holy-grails" target="_blank">Holy Grails</a></span>

<span class="caption-promos"><a href="./holy-grails" target="_blank">Holy Grails</a></span>

<span class="caption-promos"><a href="./holy-grails" target="_blank">Holy Grails</a></span>

Monty Python cheese

Monty Python cheese

Monty Python cheese

<span class="caption-promos"><a href="./rarest-cheese" target="_blank">Monty Python cheese</a></span>

<span class="caption-promos"><a href="./rarest-cheese" target="_blank">Monty Python cheese</a></span>

<span class="caption-promos"><a href="./rarest-cheese" target="_blank">Monty Python cheese</a></span>

Mars life maybe

Mars life maybe

Mars life maybe

<span class="caption-promos"><a href="./mars" target="_blank">Mars life maybe</a></span>

<span class="caption-promos"><a href="./mars" target="_blank">Mars life maybe</a></span>

<span class="caption-promos"><a href="./mars" target="_blank">Mars life maybe</a></span>

Curious asteroid facts

Curious asteroid facts

Curious asteroid facts

<span class="caption-promos"><a href="./asteroids" target="_blank">Curious asteroid facts</a></span>

<span class="caption-promos"><a href="./asteroids" target="_blank">Curious asteroid facts</a></span>

<span class="caption-promos"><a href="./asteroids" target="_blank">Curious asteroid facts</a></span>

Aperiodic blog

Aperiodic blog

Aperiodic blog

<span class="caption-promos"><a href="./blog" target="_blank">Aperiodic blog </a></span>

<span class="caption-promos"><a href="./blog" target="_blank">Aperiodic blog </a></span>

<span class="caption-promos"><a href="./blog" target="_blank">Aperiodic blog </a></span>

Lipomania!

Lipomania!

Lipomania!

<span class="caption-promos"><a href="./lipograms" target="_blank">Lipomania!</a></span>

<span class="caption-promos"><a href="./lipograms" target="_blank">Lipomania!</a></span>

<span class="caption-promos"><a href="./lipograms" target="_blank">Lipomania!</a></span>

mini museum fourth edition

mini museum fourth edition

mini museum fourth edition

mini museum fourth edition

mini museum fourth edition

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