expert answers to common gemstone questions covering quality, authenticity, certification, pricing, treatments, value, and gemstone care tips.
Tourists in Sri Lanka can steer clear of gemstone scams by buying only from government-licensed jewellers who are registered with the National Gem and Jewellery Authority (NGJA) and by strictly shunning unsolicited guides or tuk-tuk drivers pitching “special factory deals” that sound too good. The NGJA provides free and impartial gem testing help for visitors,…
You can check an online gemstone seller by seeing what active memberships they have in professional trade organisations, reading independent third-party feedback and making sure they hand over recognised lab certificates for the stones, not just a vague document. A legitimate, steady seller should also include a clear and firm return policy, plus they should…
A gemstone can be very collectable and keep strong value when it shows exceptional natural colour, strong clarity, a master cut and also arrives with independent laboratory certification that confirms its origin and the absence of artificial treatments. The actual collectibility mostly comes down to geological rarity and steady buyer demand. Unheated rubies and sapphires,…
Start a gemstone collection by setting a particular angle, like one mineral species, one geographic origin, or a theme tied to historical birthstones, and then buying good, properly documented specimens while staying inside your budget. Begin with practical, tough stones such as quartz, amethyst, or garnets, so you can sharpen your eye for hue, cut…
To avoid scratching your gemstones, keep each piece of jewellery on its own, in gentle fabric-lined little sections, or in dedicated pouches, and try to separate the more rigid stones like diamonds from softer gems, so they don’t quietly rub. Also, make a habit of taking gemstone jewellery off before physical activities, heavy lifting, yard…
You can learn gemmology by jumping into formal, globally recognised certification tracks from respected institutions like the Gemological Institute of America (GIA) or the Gemmological Association of Great Britain (Gem-A). If you are starting, it helps to read solid industry textbooks, visit local gem and mineral shows and take beginner online courses. That said, to…
You can avoid gemstone scams by buying only from reputable, long-standing dealers and also requiring an independent certification report from recognised gemmological laboratories like the GIA, Gübelin, or SSEF. Do not trust a seller’s internal report alone, or their talk about quality, just because it sounds confident. Instead, study the usual warning signs like pricing…
Sapphires form deep in the Earth’s crust when corundum, the mineral, crystallises under severe heat and pressure. During that process, tiny amounts of iron and titanium seem to interact in a way that builds the stone’s usual blue tone. Even if blue gets the most attention, sapphires can appear in many other colours, except red….
Rubies get graded mostly by how intense, pure and saturated the red looks; then the rest comes in later, like clarity, the cut quality and finally carat weight. The top valued rubies show a vivid, deep red tone with a slight blue undertone; this has been called in the trade “pigeon’s blood” for a long…
Rubies form when metamorphic geological processes occur, where extreme heat and pressure naturally press aluminium together with oxygen so the mineral corundum can be made, and trace chromium later enters the stone and gives it that distinct red colour. For a ruby to form in nature, corundum needs to crystallise where chromium is plentiful, but…