expert answers to common gemstone questions covering quality, authenticity, certification, pricing, treatments, value, and gemstone care tips.
Yes, certain gemstones can permanently lose or shift their colour over time because of long exposure to direct sunlight, high heat, or strong cleaning chemicals. This effect, commonly called colour fading or bleaching, happens a lot in particular light-sensitive minerals. For example, kunzite, amethyst, and some types of yellow topaz, plus pink tourmaline, have colour…
Scientifically, gemstones cannot give off physical energy to change human emotions, but they can behave like strong psychological anchors that nudge a person’s mood in a better direction. Still, the emotional effect depends a lot on what the wearer already thinks, the cultural meaning attached to the stone, and the cognitive placebo effect. So if…
No, there isn’t any peer-reviewed scientific proof showing that gemstones can cure diseases, heal physical ailments, or directly improve human health. The “medical” benefits people think they get from crystals and gems mostly come from a psychological placebo effect. Even though crystal healing is incredibly popular as an alternative practice, medical science places it under…
You should never wear gemstone jewellery while you are swimming. Chlorine and salt water rapidly cause severe chemical and structural damage to both the stones and the metal settings, which is not a small issue. Also, cold water makes your fingers physically shrink, and that can make rings slide off more easily and become permanently…
It is generally not recommended to wear gemstone jewellery in the shower, because hard water minerals, soaps, and shampoos tend to leave a stubborn, dulling film on the stones. Also, hot water along with chemical body washes can really harm porous, organic, or otherwise chemically treated gems. Even though exceptionally hard stones like diamonds and…
Yes, gemstones can actually be made in laboratories, using high-level technological processes that recreate the same extreme natural heat and pressure found deep in the Earth’s crust. The result is that these synthetic stones match the exact chemical composition, crystal layout, and light behaviour of stones that are mined naturally. In practice, lab-grown gems like…
Even if you can notice things about colour, scratch resistance, and the way light behaves at home, a solid gemstone ID still really needs proper professional gemmological gear. Just looking at it by yourself usually cannot reliably tell natural stones from high-quality synthetics, and you will also struggle to spot the more advanced lab treatments…
Yes, lots of valuable gemstones, like sapphires, rubies, garnets, and diamonds, show up in rivers and streams as alluvial deposits. The stones usually weather out of their original host rocks, then get carried downstream by fast-moving water currents over thousands of years, eventually ending up somewhere new. When the water quickly wears down the surrounding…
Hard, non-porous gems, like diamonds and sapphires, can usually handle salt water, but too much time around it can seriously damage porous, organic, or fracture-filled stones. Salt itself is basically corrosive, so it can actively wear down fragile stones, metal mountings, and even clarity-enhancing treatments. With organic gemstones such as pearls, coral, and amber, and…
Hard, untreated gemstones like diamonds and sapphires can often be cleaned without trouble in ultrasonic cleaners. But many other stones will crack, shatter, or lose their protective treatment layers. Porous, heavily included, or organic gems should not be placed in ultrasonic vibrations under any circumstances. Ultrasonic cleaners use high-frequency sound waves, which then make microscopic…