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An Amazing Discovery In Baltic Amber! Like something straight out of Jurassic Park! This incredible amber piece contains not one, BUT TWO insect inclusions! Most likely, these are two crane flies often mistaken for mosquitoes. Millions of years ago, these insects became trapped in sticky tree resin. Over time, the resin fossilised and hardened into what we now know as amber. This particular piece is Baltic amber, estimated to be around 40–50 million years old and found around the Baltic region, including Russia, Poland, Lithuania, and Latvia. Other famous amber deposits include Mexico, the Dominican Republic, Myanmar, and the Isle of Wight here in the UK. Some of the oldest known amber deposits date back over 300 million years! Nature’s time capsules never fail to amaze! If you have any questions about Baltic amber or maybe have a query about a diamond or gemstone, then feel free to get in touch today and our expert team will be happy to help you.

An Incredible Discovery Of A Triangular Iron-Bearing Inclusion Within A Natural Diamond! A striking triangular feature was observed in a natural diamond, captured under the microscope. This triangle reflects the diamond’s natural octahedral growth structure within its cubic crystal system. The orangey-brown colour is caused by a trapped iron bearing mineral inclusion that has naturally altered over time, creating its distinctive rusty appearance instead of remaining clear. One of the many hidden wonders that can exist within diamonds. Got a question about any of your diamonds you might have? Then get in touch today and we’ll be happy to assist you in finding the right solution for you!

Coating Treatment For An Emerald A drilled bead was sold as an emerald… but the reality was very different. Under magnification, the colour told the story. We observed green surface coating beginning to flake, particularly around the drill hole and edges areas where wear occurs first. Testing confirmed the material beneath: white topaz, not emerald. Surface coatings like this can appear convincing at first glance, especially in beads. But they are only superficial and can degrade over time, revealing the true stone underneath. 🔍 What to look for:
 Colour concentrations around drill holes Uneven or patchy colour Signs of surface wear or flaking At E.D.R – European Diamond & Gemstone Reports, we specialise in accurate gemstone identification and coating treatment detection. If something doesn’t look quite right, especially with emeralds, have it tested.

Tourmaline, The October Birthstone The October Birthstone, Tourmaline, is celebrated for its dazzling colour range and vibrant energy. From rich greens and ocean blues to fiery reds and jet black, its variety makes it a truly unique gem for autumn birthdays. Tourmaline comes from a Sinhalese word meaning “stone with mixed colours,” perfect for a gem often found in vivid multicoloured formations. While pink tourmaline is most widely marketed for October, all colours of tourmaline are equally recognised for the month. Tourmaline is admired for its complex crystal structure and optical trait, pleochroism, where it appears different colours from different angles. Watermelon tourmaline, with its pink centre and green rind, forms naturally in concentric zones. This rare bi-coloured type is a collector’s favourite and often kept in slice form to show off its beauty. Fun fact: Tourmaline can become electrically charged when heated or rubbed, a property known as pyroelectricity and triboelectricity, making it one of the few gems with this natural ability. Symbolising protection, creativity, and emotional clarity, tourmaline is more than a birthstone, it’s a colourful force of nature. Get in touch with our team today to get additional information on your birthstone!

Opal, The October Birthstone The October Birthstone, Opal, is known for its phenomenon play of colour, making it a true gem of October. This mineraloid showcases a breath-taking spectrum of colours that can change with different light and angles, making each stone uniquely beautiful. While opals are often celebrated for their phenomenon play of colour, they also occur in varieties with milky white or deep black body tones. Opal forms when silica-rich water seeps into cracks and voids in the Earth’s crust. Over millions of years, this water gradually deposits microscopic spheres of silica. When these spheres are uniformly arranged, they diffract light, creating the captivating optical effects that fascinate gemstone lovers. Historically, opals have symbolised hope, purity, and truth, with many cultures considering them to be lucky charms. The name “opal” originates from the Sanskrit word “upala,” meaning “precious stone.” Ancient Romans believed opals held protective powers, while Medieval Europe regarded them as symbols of royalty. Fun fact: Did you know that opals are sometimes referred to as the “stone of hope”? They are also believed to enhance creativity and inspire originality in those who wear them. With their enchanting beauty and rich history, opals are not just a birthstone; they are a treasured gem for those who appreciate nature’s artistry. Get in touch today to learn more about your own birthstone!

Natural vs Cultured Pearls: What’s the Difference? While both natural and cultured pearls may appear visually similar, displaying a lustrous surface and rounded form, their internal structures and origins are fundamentally different. Natural pearls form organically in the wild when an irritant, such as a parasite enters a mollusc, prompting it to secrete concentric layers of nacre over many years. Unlike cultured pearls, natural pearls are composed entirely of nacre, with no artificial core or nucleus. This slow, organic process results in pearls that are not only rare but also uniquely beautiful in structure. The images linked to the blog above show a cross-section of a natural pearl, where you can clearly see the delicate growth rings, each representing a layer of nacre built up over time, much like the rings of a tree. Photo @E.D.R. Natural Pearl In contrast, cultured pearls are the result of controlled pearl farming, where a technician surgically inserts a nucleus (usually a spherical bead made from shell) along with mantle tissue into the mollusc. This stimulates nacre production under farmed conditions. Cultured pearls can develop in as little as 6 months to a few years, depending on the variety (e.g., Akoya, South Sea, Tahitian, or freshwater). Due to overharvesting in the late 19th and early 20th centuries, particularly in regions of the Persian Gulf, India, and Sri Lanka, natural pearls became scarce. As a result, they are now rarely seen on the market and command significantly higher prices due to their rarity and historical importance. At E.D.R – European Diamond & Gemstone Reports, we offer advanced X-ray analysis and full gemmological testing to accurately identify natural versus cultured pearls. Our lab can detect internal growth structures, confirm the presence or absence of a nucleus, and provide professional certification for both loose pearls and mounted jewellery. Whether you’re buying, selling, or valuing pearls, trust E.D.R for precise, expert-level pearl identification and reporting. Get in contact today for pricing and any other pearl inquiries or questions you may have.

The Beautiful Sapphire, The Birthstone Of September September’s birthstone, the sapphire, is celebrated for its stunning hues and remarkable durability. As a member of the corundum family, sapphires rank 9 on the Mohs scale, making them exceptionally hard and ideal for everyday wear. While most people associate sapphires with deep blue, they come in a variety of captivating colours, including violet, green, yellow, orange, pink and even colourless white—except for red, which is classified as ruby. This fascinating colour variation occurs due to trace elements within the crystal structure. Historically, sapphires have symbolised sincerity, truth, and loyalty, making them a coveted choice for royalty and clergy. The name originates from the Greek word for “blue stone,” and ancient cultures believed that these gems could protect the wearer from harm. Fun fact: In addition to being the birthstone for September, sapphires are also celebrated for the 5th and 45th wedding anniversaries and serve as the zodiac birthstone for Capricorn. With their timeless beauty and rich symbolism, sapphires are not just a birthstone; they are a treasured gem for all occasions.

The Stunning Spinel, The Birthstone Of August Next in prominence among August’s birthstones is spinel, a gem often mistaken for ruby due to its vibrant red shades, though it can also be found in blues, pinks, and purples. Spinel is loved for its excellent hardness and brilliance, making it ideal for fine jewellery. The term “spinel” originates from the Latin word “spina,” meaning ‘thorn,’ referring to its sharp crystal edges. Remarkably, some famous “rubies” in history, like the Black Prince’s Ruby in the British Crown Jewels, are spinels, highlighting their sometimes-overlooked status. Fun Fact: Spinel is sometimes called the ‘gem of immortality’ in various cultures, believed to confer eternal life and protection to its wearer. If you’d like to learn more about Spinel the birthstone for August, then please feel free to get in touch with the E.D.R team and we’ll be more than happy to help!

The name “peridot” is derived from the Arabic word “faridat,” meaning ‘gem.’ As August arrives, we celebrate peridot, the most recognised birthstone of the month, cherished for its vivid green colour reminiscent of sunlit leaves. Peridot forms deep within the Earth’s mantle and is brought to the surface by volcanic activity, making it a unique gem associated with fiery origins. Interestingly, peridot is often found in association with diamonds, as both can be brought to the surface through the same volcanic eruptions in kimberlite and basalt deposits. However, they do not grow together; rather, they originate from similar deep-earth environments and occasionally appear in the same geological formations. Historically, peridot symbolises strength, protection, and healing, prized since ancient Egyptian times as the ‘gem of the sun.’ Fun Fact: Peridot is one of the few gemstones that occur in only one colour, green, though it ranges from yellow-green to olive depending on iron content.

As a reputable gemmological laboratory based in London, we strive to inform and protect consumers in the gem-buying market. One of the treatments you may encounter when purchasing rubies is glass filling (also known as lead glass filling), designed to enhance the stone’s appearance and clarity. While this treatment can make a ruby look more appealing, it also raises questions about authenticity and long-term value. What is Lead Glass Filling Treatment? Glass filling, or clarity enhancement, involves introducing a glass-like substance into the fissures and inclusions of a ruby to improve its visual appeal. This process is often conducted to mask imperfections, allowing lower-quality Rubies to appear more valuable. While this technique can enhance the gem’s clarity and colour, buyers must understand its implications. Signs of Treatment When evaluating rubies, particularly those that appear unusually vibrant or eye-clean, look for the following signs that may indicate glass filling: – Visible Bubbles: One of the most telltale indicators of glass filling is the presence of gas bubbles within the stone. These bubbles can vary in size and are often visible under magnification. – Yellow/Blue Flashes: Look for flashes of colour that may indicate the presence of glass. These may appear as reflections or highlights within the stone. Make sure to see if these flashes appear to surface level and look for any visible fractures to the external part of the ruby, as this is where the glass treatment is introduced to the ruby. – Blue-Green Fluorescence: Glass-filled rubies may exhibit blue-green fluorescence under UV light. Rubies, due to their high chromium content, typically fluoresce weak to strong red. When glass treatment is done on the rubies, the glass elements interfere with the fluorescence, causing this unusual blue to green fluorescence. Why You Should Care The presence of glass filling can significantly affect a ruby’s valuation. Treated stones are significantly lower in value than their untreated counterparts. Additionally, repairs or restoration may alter the longevity and durability of the gem. The Importance of Certification Before making any purchase, ensure you obtain a valid certification from a reliable gemmological laboratory. This will provide transparency regarding the ruby’s treatment history and authenticity. At E.D.R- Diamond & Gemstone Reports, we employ advanced testing techniques, including Fourier Transform Infrared Spectroscopy (FTIR), to accurately identify treatments like glass filling. Remember, a well-informed buyer is empowered to make the best investment decisions. In conclusion, buy rubies with caution. Stay informed about the treatments available and always seek professional guidance. By doing so, you ensure the integrity of your precious gems and protect your investment for years to come. Visit E.D.R- Diamond & Gemstone Reports for expert analysis and assurance regarding the quality and authenticity of your gemstone purchases.