Gemstone Windows and Dark Patches: What to Look for in a Cut Gem

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AI-generated educational illustration. Conceptual only; not a photograph of an actual specimen or location. A coloured gem may have a pale, see-through centre or areas that look almost black. Both affect its appearance, but they do not have the same cause. What is a window? A window is an area where light passes through the gem instead of being returned towards the viewer. You may see the background through it, especially near the centre. Cutting angles and the material's refractive index—how it bends light—help determine whether this happens. There is no single ideal depth for every gemstone. Why dark patches need a closer look Darkness can have several causes. The material may absorb a lot of light. Some facets may reflect dark surroundings or the observer. Extinction is another cause, involving light that is not returned to the viewer after internal reflection. For that reason, calling every black patch “extinction” can be misleading. A simple viewing routine Look at the gem fac...
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What U.N. scientists say about climate change

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🔥🌍 The Road to Climate Hell: Urgent Actions We Must Take 🌍🔥

Recent reports from the UN climate science agency paint a grim picture of our planet's future. Human activities are unequivocally responsible for rising temperatures and the increased frequency and severity of extreme weather events.

In early 2022, a landmark report emphasized the diverse regional impacts of climate change, from heat waves and stronger storms to rising sea levels. Millions are at risk of food insecurity and poverty as climate change disrupts crops, water supplies, and global trade.

April 2022 brought a call for action at the individual level, urging governments to implement policies that foster sustainable habits and reduce waste. The report stressed the importance of drastic cuts in emissions to prevent catastrophic warming.

Despite warnings, the pace of action remains inadequate. The transition to clean energy is sluggish, and climate change threatens global economic stability. It's time for bold and immediate measures to secure a sustainable future.

Join the movement for a sustainable future! 🌿 #ClimateActionNow #RenewableEnergy #SustainableLiving

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