Je, ni mawe ya ajabu ya matukio ya macho?

Vito vya mawe ya jiwe

Mawe ya jiwe ya matukio ya macho yanayotokana na nuru inayoingiliana na muundo wa fuwele wa jiwe. Uingiliano huu au kuingilia kati inaweza kuwa kwa njia ya kuenea kwa mwanga, kutafakari, kutafakari, kupakia, kunywa au maambukizi.

Adularesence

Adularescence is a blue sheen phenomenon reflecting on the domed cabochon surface of Moonstone. The phenomenon of shimmer comes from the interaction of light with layer of little “albite” crystals in moonstones. The thickness of layer of these tiny crystals determine the quality of blue shimmer. Thinner the layer, better the blue flash. This usually appears as a billowy light effect. Moonstone is orthoclase feldspars, another name is “selenite”. Romans called it Astrion.

Asterism

Wachakataji wa nyasi mara nyingi huchagua kutengeneza maumbo ya cabochon, wakati mawe ni ubora mdogo. Kwa vito na mawe vile wakati mwanga unaanguka juu ya uso wa cabochon na hufanya nyota-kama mionzi, jambo hilo linaitwa asterism. Kuna 4 ray na nyota 6 ray aliona kawaida. Hii hutokea wakati mwelekeo wa sindano kama inclusions au hariri ndani ya kioo ni juu ya mhimili zaidi ya moja.

Chatoyancy

From the french name “Chat” mean cat. Chatoyancy refers to a phenomenon akin to opening and shutting of cat’s eye. We can observe in chrysoberyl cat’s eye gem with great clarity. Cat eye gems have a single sharp band, sometimes two or three bands, running across the domed cabochon surface. Cat’s eye gemstones in cabochon shape are cut highlight chatoyancy. The straight needles of the crystal structure of the stone are perpendicular to the phenomena. So when light falls on it, the sharp band can be seen. In the best cases, the chatoyant Chrysoberyl cats eye visually separates the surface into two halves. We can see a milk and honey effect when the stone move under light.

Iridescence

Iridescence pia inajulikana kama goniochromism, jambo ambalo uso wa nyenzo huonyesha rangi nyingi kama angle ya kutazama mabadiliko. Inaweza kuonekana kwa urahisi katika shingo la njiwa, sabuni za sabuni, mbawa za kipepeo, mama wa lulu nk. Ukosefu wa nafasi za uso na kubwa huwezesha mwanga kupitisha na kutafakari nyuma kutoka kwenye nyuso nyingi (diffraction) na kusababisha rangi nyingi athari ya kuona. Pamoja na kuingilia kati, matokeo ni makubwa. Lulu za asili zinaonyesha iridescence ambayo ni tofauti sana na rangi ya mwili. Lulu za Tahiti zinaonyesha uzuri mkubwa.

Jaribu rangi

The wonderful gem called opal displays a beautiful color. The fire opals from Lightening Ridge, Australia (showing shifting patches of luminous spectral colors against black) are famous for this phenomenon. While this play of color is a type of iridescence, almost all gemstone dealers call it wrongly “fire”. Fire is a gemological term, It’s the dispersion of the light reflect in gemstones. It’s typically visible in a diamond. It is a simple dispersion of light. In case of opals it isn’t dispersion and hence, it’s wrond to use the word “fire”.

Mabadiliko ya rangi

The best example of color change is alexandrite. These gems and stones appear very different in incandescent light compared to natural day light. This is largely due to the gems chemical composition as well as strong selective absorption. The alexandrite appears green in daylight and also appears red in incandescent light. Sapphire, also tourmaline, alexandrite and other stones can aslo show a color change.

Labradorescence

Labradorescence ni aina ya uchidescence, lakini ni mwelekeo sana kwa sababu ya twinning kioo. Tunaweza kuipata katika jiwe la labradorite.

kosa: Maudhui ni ya ulinzi !!