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A complex borosilicate of variable composition, created by nature in the most exquisite shades and imaginative combinati
A mineral from the subclass of island silicates, zirconium orthosilicate ZrSiO4, which is the embodiment of natural beau
Heating, diffusion, healing, irradiation, imitation of natural aging, ultrasonic and chemical refining.
This exquisite mineral belongs to the hexagonal system and belongs to the subclass of ring silicates. Al2[Be3(Si6O18)]
A cubic mineral that reveals to us the magic of mixed magnesium and aluminum oxide, MgAl2O4.
The charming beauty of crystalline grains, combining two isomorphic series: R2+3Al2(SiO4)3 and Ca3R3+2(SiO4)3.
New Posts
- DiamondUnderstanding Diamond Fluorescence Diamond fluorescence is a phenomenon that occurs in some diamonds when exposed to ultraviolet light. This effect can influence the appearance and value of diamonds, depending on various factors. What is Diamond Fluorescence? Diamond fluorescence refers to the emission of visible light by certain diamonds when they are exposed to ultraviolet light. It is caused by the interaction of the diamond's structure with ultraviolet radiation. This phenomenon occurs due to the presence of certain impurities or defects within the diamond crystal lattice. Effect on Appearance and Value In some diamonds, fluorescence can create a hazy, oily, or cloudy appearance. Consequently, diamonds with strong fluorescence may be valued lower compared to those with faint or medium fluorescence, especially if the fluorescence adversely affects the diamond's appearance. Impact on Color Fluorescence can also affect the perceived color of a diamond. For diamonds with lower color grades (from J to M), bluish fluorescence can mitigate faint yellow hues, making the diamond appear more colorless and potentially increasing its value. However, for diamonds with higher color grades (from D to F), fluorescence may have the opposite effect, reducing their value. Market Perception and Buyer Preferences The perception of fluorescence in the diamond market can vary. Some buyers may view fluorescence as a flaw, while others may consider it a desirable characteristic, especially if it enhances the diamond's appearance or color. Ultimately, the value of a diamond with fluorescence depends on individual preferences. Understanding the Mechanism Fluorescence in diamonds occurs due to the interaction of the diamond's structure with ultraviolet light. Certain impurities, such as nitrogen atoms, present within the diamond lattice, react to ultraviolet light, emitting visible light in the process. Conclusion Diamond fluorescence is a natural phenomenon that can affect the appearance and value of diamonds. While fluorescence may enhance or detract from a diamond's beauty, its impact on value depends on factors such as the diamond's color grade, the intensity of fluorescence, and individual preferences. It's essential for buyers to consider these factors and consult with experts when evaluating diamonds with fluorescence before making a purchase decision. #Diamonds #Fluorescence
- DiamondColored diamonds, also known as fancy color diamonds, are exceptionally rare and valuable gemstones that exhibit natural coloration beyond the typical range of colorless to light yellow found in diamonds graded on the D-to-Z scale. These diamonds come in a diverse array of hues, including blue, green, pink, red, purple, orange, and more. Each colored diamond derives its unique color from different chemical impurities or structural defects present during its formation process. For example, blue diamonds often contain boron, while green diamonds may result from exposure to natural radiation. The presence of nitrogen can cause yellow or brown colors in diamonds. The intensity of color in fancy color diamonds can vary widely, ranging from faint pastel hues to vivid and deep tones. Among colored diamonds, red and green are particularly rare and highly prized, followed by purple, orange, and pink. Blue diamonds, such as the famous Hope Diamond, are also coveted for their exceptional beauty. Colored diamonds are graded based on the intensity and purity of their hue, with vivid and pure colors commanding the highest prices. However, even diamonds with subtle or secondary hues can be desirable depending on the preferences of collectors and consumers. In recent years, there has been growing interest and demand for colored diamonds in the jewelry market, fueled by their rarity, uniqueness, and allure. Auctions and private sales of exceptional colored diamonds have fetched record-breaking prices, further highlighting their status as coveted treasures. In addition to their beauty and rarity, colored diamonds have also captivated researchers and scientists seeking to unravel the mysteries of their formation and coloration processes. Studies involving spectroscopy, crystallography, and geology have provided insights into the origins and characteristics of these extraordinary gems. Overall, colored diamonds represent a fascinating intersection of natural beauty, geological phenomena, and human fascination, making them objects of enduring fascination and investment. #Colored #Diamonds
- DiamondTo calculate the basic cost of a diamond, the Rapaport table is utilized. It is a globally recognized standard that determines the price for both round (which are more expensive) and other shapes of diamonds. Horizontal rows represent information about clarity, while vertical columns provide details about the diamond's color. To find the diamond's price, one must locate the number at the intersection of the color and clarity characteristics and multiply it by the stone's weight. The resulting sum should then be multiplied by $100, and this becomes the base price of your diamond. The Rapaport price list is updated weekly and is presented as a price list for diamonds ranging from 0.1 carat to 10.99 carats. For a more precise calculation of the price based on the basic cost, additional discounts or surcharges are applied: • Cutting quality below Very Good reduces the cost from the base price, while Excellent increases it. • Diamonds without fluorescence cost more than the calculated price, whereas those with strong fluorescence are cheaper. • Diamonds with transparent, light inclusions are valued higher than diamonds with inclusions of the same clarity but black in color. • Various other minor factors influence the diamond's cost: the average diameter of the stone and the ratio of its sides, the size of the diamond's table and the width of the girdle, and so on. The Rapaport table is widely recognized in the diamond industry for its role in standardizing diamond pricing. It takes into account various factors such as cut, color, and clarity to provide a benchmark for diamond values. The weekly updates ensure that the prices remain reflective of the current market conditions, making it a reliable reference for both buyers and sellers in the diamond trade. #Diamonds #Price #Rapaport
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