Opal
Opal e dua na amorfo hidratado fomu ni silika (SiO2·nH2O);na kena wai e rawa ni tiko mai na 3% ki na 21% ena kena bibi, ia e dau tiko ena maliwa ni 6% kei 10%. Ena vuku ni amorfo (kemikali) na ituvatuva vakayago, e vakatokai me dua na mineraloiti sega ni vaka na ivakarau ni karisitala ni silika, ka ra vakasamataki me minerale. E biu tu ena dua na ivakarau ni katakata lailai ka rawa ni yaco ena veivakacacani ni voleka ni mataqali vatu kecega, ka dau kune vakalevu duadua ena limonite, nukuvatu, rhyolite, marl, kei basalt.
Itukutuku makawa
[veisau | edit source]E dau lailai na opal qai yaga sara vakalevu ena gauna makawa. E Iurope, e dua na vatu talei era taleitaka na matavuvale vakatui.[1][2] Me yacova na kena dolavi na veivanua lelevu e Ositerelia ena ika 19 senitiuri na ivurevure duadua ga e kilai o Červenica ena taudaku ni iyalayala ni vanua o Roma e Silovakia.[3] Opal na vatutalei ni matanitu o Ositerelia.[4]
Veitikina
[veisau | edit source]- ↑ "Na vatu e lomadonu ena isala ni isala ni ikatinikatolu ni senitiuri ni Empara Tabu ni Roma e dua na opal e tukuni ni roka ni ucacevata vulavula savasava, e serau ena veivakadrodroi ni waini damudamu rairai vinaka: e vakatokai me "na Luveniyali", de dua baleta ni sega tale ni dua na vatu me vakataki koya. 24 Ia ena Siga ni Yabaki Vou 1584,25 e ciqomi kina o Ranadi Ilisapeci I, e a vakararamataki parure — e dua na vatutalei iukuuku taucoko e veiganiti — mai vua e dua vei ira na nona dauveiqaravi taleitaki, Sir Christopher Hatton." Finlay, Victoria. Jewels: A Secret History (Kindle Locations 2145–2148). Random House Publishing Group. Kindle Edition.
- ↑ "Na vatu taumada kece oqo e voleka ni vakadeitaki ni mai na kelikeli makawa e Silovakia —na ivurevure vata ga ni vatu talei nei Nonius kei na kena damudamu-ka-vulavula na Empara Tabu ni Roma. Na kelikeli era a cakacaka me yacova na icavacava ni ikatini ka ciwa ni senijiuri..." Finlay, Victoria. Jewels: A Secret History (Kindle Locations 2163–2165). Random House Publishing Group. Kindle Edition.
- ↑ Finlay, Victoria. Jewels: A Secret History (Kindle Location 1871). Random House Publishing Group. Kindle Edition.
- ↑ "Australian National Gemstone". Australian Government, Department of the Prime Minister and Cabinet. Retrieved 10 June 2018.