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Close-up of a butt weld joint connecting two steel plates. The weld bead has a distinct rippled texture, indicating a fusion welding process. Metal discoloration and surface finishing marks are visibl Natural adularia blue sheen oval shaped cabochon moonstone setting in tweezers. Loose gem on gray leather textured background. Feldspar mineral group. Semiprecious gemstone rare and expensive stone. Macro photo of etched weld cross-section in T-joint. Reveals weld bead shape, fusion lines, and heat-affected zones. Used in non-destructive testing (NDT) and welding quality evaluation. Macroetched weld joint with backing. Cross-section reveals fusion line, HAZ, slight inclusion. Used in NDT, metallography, welding QA/QC, training, and weld defect analysis. Weld macroetch sample. Cross-section reveals fusion zone, HAZ, inclusions, lack of fusion. Used in welding inspection, NDT training, metallography, and quality control evaluation. Macroetch weld sample with backing. Etched cross-section shows fusion zone, HAZ, grain structure, porosity. Ideal for NDT, welding inspection, training, and metallographic analysis. T-joint weld macroetch sample. Etched cross-section shows fillet weld structure, fusion zones, HAZ, weld passes. Used in NDT training, welding QA/QC, metallurgy, and defect evaluation. Hand made sterling silver ring with natural blue shine labradorite round gemstone in bezel setting. Darkened oxidised silver hammered ring with blue gemstone on gray paper gradient background. Circular TIG weld on a 20mm stainless steel tube attached to a plate base. Beautiful, even weld with heat tint and a finished crater featuring a round oxide droplet. High-detail, industrial imagery. Close-up of a single-pass fillet weld joint without beveling, showcasing the heat-affected zone and fusion boundaries between the base and filler metals. Ideal for welding, metallurgy, and engineering Macro etched cross-section of a butt weld Joint prepared for metallurgical examination – analysis of welded metal structure. shows the heat-affected zone (HAZ), weld penetration, fusion boundaries. Macro shot of a V-groove butt weld on steel plates, two-pass weld (root and main). High contrast fusion boundaries, visible crystallization patterns from center to fusion zone. Black background. Natural London blue topaz oval shape gemstone. Heated, irradiated, color enhanced stone setting for making jewellery. Isolated on white background, blured semireflection. Gemology, mineralogy theme. Genuine natural cherry red rhodolite garnets gemstones lot, set settings for making jewelry on bright daylight. Gemology mineralogy fashion theme. White paper background. Oval faceted. Semiprecious. Natural yellow citrine heart shaped loose faceted gemstone on white background. Shiny polished stone quartz group mineral gradient zoned color pattern. Photo for articles on the topic of gemology. Natural adularia blue sheen oval shaped cabochon moonstone setting in tweezers. Loose gem on dark gray textured background. Feldspar mineral group. Semiprecious gemstone rare and expensive stone. Round diamond faceted cubic zirconia, cubic crystalline form of zirconium dioxide (ZrO2) colorless synthesized material. White synthetic gemstone. Diamond imitation. Gray gradient background. Raw rough pyrope garnet crystals lot from South Africa. Unpolished raw gemstones ready for faceting or using in jewelry making. White background. Unheated, untreated semiprecious gems. Gemology theme. Natural glowing moonstone gems set, lot on gray gradient textured background. Blue adularia oval cabochon loose gesmtones settings and light pink one sample holded in tweezers. Gemology theme. Natural ligh blue aquamarine gemstone in tweezers on dark gray background. Genuine unheated clean transparent semiprecious oval faceted gem setting for making jewelry. Mined in Brazil. Sea blue colour Natural heated, lead glass filled, treated 6 rays star red ruby cabochon loose gemstone in tweezers on artificial spot lighting on uneven radial gray background. Oval gemstone for making jewelry. Genuine garnet gemstone. Cherry red rhodolite gem. Oval faceted in Thailand. Mined in Africa. Held in tweezer. Black gray gradient blur background. Unheated natural setting for jewelry. Gemology. Natural bright lemon yellow color chrysoberyls drop and oval shaped faceted loose gemsotnes. Settings for jewelry making. Unheated, untreated, earth mined. white cotton background. Gemology theme. Songea natural red sapphire gemstone. Beryllium treated, color enhanced natural mined corundum. Clean, transparent precious gem setting for making jewelry. Holded in tweezers on gray background White and blue small calibrated size sapphires on black textured paper background. Natural genuine small precious leucosapphires and blue colored gem settings from Sri-Lanka. For jewelry making. Rare rich peach pink colour genuine morganite beryl loose faceted stone setting for making expensive jewelry. Clean colorful flawless perfect portuguese oval cut natural mined unheated gemstone. Fixed photo 50 mm lens in hand. Green background. Daylight shot. Window reflection. Round shaped natural fancy color sapphires lot. Classic diamond cut, faceted. Pink, violet purple hues small loose gems for jewelry making. Gray gradient background. Gemology theme. WW1 Japanese military bolt-action service rifles K 16 headstamp cartridge bottom shell casing isolated on white background. 6.5 made by Kynoch for Russia in 1916 Natural mined drop faceted peach color sapphire loose gemstone setting for jewelry making. Clean, gentle classic heat treatment. Dark gray gradient background. Natural oval portuguese faceted rich purplish blue color crystal clean, flawless tanzanite semoprecious gemstone holded in tweezers. Gray reflective background. Isolated on white background natural mined unheated rich colorful cherry raspberry red rhodolite faceted garnet transparent, semiprecious gemstone loose setting for jewelry making. Gemology theme. Natural milky light gray color opaque oval cabochon shaped moonstone polished gemstone setting for making jewelry. Mined in India, polished in Thailand. Hold in tweezers. Gemology theme, lapidary. Natural glowing moonstone gems set, lot on dark gray leather textured background. Blue adularia oval cabochon loose gesmtones settings and light pink one sample. Tweezers behind. Gemology theme. Mined from Queensland fields solid black matrix boulder opal. Red, orange, green, yellow, amber, violet and turquoise color veins play. Ironstone treated, carbonated to darken and stabilized. Natural earth mined unheated untreated oval faceted red color ruby gemstone from Winza, Tanzania. Visible unclusions, micro crack. Closeup front photo on gray pattern background. Gemology theme. Natural yellow brazilian citrine quartz oval checker faceted gemstone. Unheated, clean, transparent, sparkling, shiny on white backgound. Semiprecious gemstone setting for big solitaire rings. Natural adularia blue sheen round cabochon moonstone. Loose gem on gray textured leather background. Feldspar mineral group. Semiprecious gemstone not common relatively rare and expensive specimen Handmade rose 585 gold womens ring with natural gemstones. Marquis shaped red untreated, unheated ruby and round white sapphires around. Isolated Jewelry, ring on white background. Ceylon blue sapphire gemstone. Natural precious stone setting rich cornflower blue color. Genuine 1 class sapphire stone, emerald cut, gentle heat. Clean, deep saturated. Gray gradient background. Natural mined unheated Bolivian bicolor yellow purple ametrine raw rough crystal gem in tweezers closeup details inclusions look through massive. Gray gradien horizontal background. Natural swiss blue topaz. Oval cut, checkers faceted, loupe clean - VVS,IF,FL. Heated, treated, irradiated, color enhanced. Full of sparkle semiprecious gemstone in satin polished Aluminum background Antique vintage white old days diamond loose stone setting with polished culet. Transparent precious natural cushion faceted European cut gemstone. Hardness 10. White paper background. Natural corundum gemstones set. Winza unheated red ruby, Tanzanian purple sapphire, Ceylon light blue color sapphire faceted gemstone for making jewelry. Clean rare precious gems settings. Gemology. Genuine moonstone gemstone. Round shaped cabochon polished loose gemstone specimen. Semitransparent milky white with light pink shade. Clean gemstone setting in tweezers. Dark background. Gemology. Natural mined gemstone settings lot set. Lavender, light purple amethyst, golden brown topaz, color play opal cabochon, emerald cut pink spinel, orange spessartine garnet. Daylight, white background. Natural mined oval cabochon shaped, polished lemon yellow color cat's eye optical effect rare loose chrysoberyl gemstone setting holded in tweezers for making unique jewelry. Brown leather background. Natural glowing moonstone gems set, lot on dark gray leather textured background. Blue sheen adularia oval cabochon loose gesmtones settings. Tweezers sideways holdind one. Gemology theme. Genuine, natural mined, deep bright red color, oval faceted, loose rhodolite garnet flawless gemstone setting for jewelry making. Close-up macro details, front angle view. Gray gradient background. Natural genuine round faceted brown color smoky quartz transparent gemstone setting for making jewelry. Front view. Gradient background. Gemology theme. Genuine natural rich cornflower blue color round faceted calibrated matched pair Ceylon sapphire gemstones loose settings for earrings. Gentle heated. Gray gradient background. Precious stones. Natural aquamarine gemstone transparent raw crystal cluster with muscovite. Mined in Pakistan. Collectible specimen. Can be used for lapidary or faceting. Black background. Loose natural oval cabochon sunstone gemstone light peach color with inclusions of hematite and copper in the mineral what gives a golden shimmer. Isolated gem from feldspar family on gray background Natural Ethiopian hydrophane porous honey yellow color transparent fire opal: damaged, big through cracks in the crystal mass after been dried out. Opal physical properties. White background. Close-up Round faceted, custom cut Natural rhodolite garnet gemstone setting. Perfect sheped, clean, colorful deep cherry red color semiprecious stone. Shimmer in crystal massif. Sparkling, shiny, rich colour. Genuine Brazilian unheated yellow color citrine gemstone. Loose oval shape faceted transparent stone with some small natural inclusions. White background isolated closeup makro, blured semireflection. Round diamond faceted cubic zirconia set lot, cubic crystalline form of zirconium dioxide (ZrO2) colorless synthesized material. White synthetic gemstones. Diamond imitation. Black isolated background Round diamond faceted cubic zirconia, cubic crystalline form of zirconium dioxide (ZrO2) colorless synthesized material. White synthetic gemstone. Diamond imitation. Blue background. London blue topaz. Natural mined, genuine gemstone. Irradiated, heated, treated, color enhanced, clean, transparent, round faceted, bright blue color with slight green undertone. Reflections on filter Natural 6 rays blue star sapphire gemstone in tweezers. Heated, diffusion treated, opaque, oval cabochon polished loose setting for making jewelry. Natural mined genuine corundum. Gemology, mineralogy Spessartine loose gemstone. Orange mandarin colour variety of garnet gemstone. Loose, faceted, transparent, clean gem setting for jewelry making on isolated white background. Gemology mineralogy theme Natural ocean jasper cabochon loose polished gemstone. Barrel shaped, opaque gem with black and red veins pattern in white mossy base. Mined in Madagascar. Gemology, mineralogy, lapidary. Close-up of a multi-pass welded pipe joint, cross-sectioned and etched to reveal detailed metal structure. Perfect for industrial, metallurgical, and engineering applications. Educational imagery. Macro shot of a welded butt joint cross-section, polished and acid-etched to reveal intricate metal microstructure. Ideal for metallurgy, engineering, and material science visuals. High-detail. Macro etched cross-section of a butt weld Joint prepared for metallurgical examination – analysis of welded metal structure. shows the heat-affected zone (HAZ), weld penetration, fusion boundaries. Macro shot of a X-groove butt weld on steel plates, two-pass weld (root and main). High contrast fusion boundaries, visible crystallization patterns from center to fusion zone. Black background. Etching with 2% Nital helps to highlight grain, fusion boundaries, phases and other structural features of the metal. Shows the heat-affected zone (HAZ), weld penetration. Black background. Macro etched cross-section of a butt weld Joint prepared for metallurgical examination – analysis of welded metal structure. shows the heat-affected zone (HAZ), weld penetration, fusion boundaries. Natural chrysolite, peridot, olivine apple green color transparent raw rough crystal. Earth mined untreated, unheated, ready for faceting or cabochon making. Close-up on white background. Natural preciuos, semi-precious faceted polished gemstones lot, horizontal front photo light gray background. Ruby, tourmaline, topaz, citrine, zorcon, amethyst, opal, garnet, chrysoberyl, tanzanite. Natural deep saturated rich red rhodolite garnet loose gemstone. Oval faceted, colorful semiprecious gemstone close-up photo on dark gray pattern background. Almandine, pyrope, spessartine. Gemology. Deep saturated red natural mined Madagascar ruby, corundum - Al2O3 gemstone. Heated, treated, lead glass filled. Holded in tweezers. Clarity - Si,I2. Background - gray metal zinc pattern. For jewelry. Natural mined blue oval faceted translucent loose sapphire gemstone in tweezers. Crystal growth color pattern lines in stone massif. Closeup macro. White background. Gemology, mineralogy theme. Natural adularia blue sheen oval shaped cabochon moonstone. Loose gem on gray textured leather background. Feldspar mineral group. Semiprecious gemstone not common relatively rare and expensive stone Natural fancy color sapphires set lot on white paper background. Genuine gemstones. Pink, purple, rose, peach, golden-yellow coloured gems settings in one horizontal line. Reflections. Gemology theme. Oval moonstone gem in tweezers on black background. White opalescent sheen shimmer. Semitransparent cabochon setting for making jewelry. Mined and polished in India. Common feldspar group stone. Antique vintage white old days diamond loose stone setting with polished culet. Transparent precious natural cushion faceted European cut gemstone. Hardness 10. White paper background. Daylight sparkl Natural rhodolite faceted garnet gems isolated on white backgroung. Cherry red color oval, round, cushion shped trasparent garnets ready to be set in precious metal jewelry. Gemology, mineralogy. Light blue aquamarine gemstone in tweezer. Octagon shaped, emerald cut, transparent, with small inclusions, unheated, mined in Brazil semiprecious stone setting for jewelry making. White background. Rich Santa Maria blue genuine aquamarine gemstone on aluminium gray satin gradient background. Octagon cut transparent, clean, unheated, semiprecious stone setting for jewelry making. Rhodolite garnet loose gemstone on gray gradient background. Bright raspberry red with pink undertone color beautiful drop shaped garnet stone. Rich deep colorful gem setting. Gemology. Reflection. USSR era lab created synthetic alexandrite gemstones pair. Purple color, oval faceted, transparent common vintage gems removed from used earrings made in Russia. Mass market man made stones. Rare now. Ceylon sapphire gemstone. Natural oval faceted, cornflower blue gem, flawless, transparent precious stone setting for making jewelry. Valued, over 3 carat big sample. Sry-Lanka mined. In tweezers. Natural brown color zones heated genuine topaz gemstone setting. Drop shaped, concave millennium cut natural gem for making jewelry. Dark gray background. Gemology, mineralogy theme. Natural purplish blue sapphire precious stone setting. Genuine, earth mined, clean, heart shaped, faceted loose gemstone specimen in tweezers. Black background. Gemology mineralogy jewelry theme. Beautyful natural high quality Ceylon blue sapphire gemstone setting. Clean, rich color, transparent, oval shaped, faceten in Sri-Lanka high class precious highly desirable gem sample. Gemology theme. Natural tanzanite gemstone. Round faceted, shaped, transparent, bluish violet color, clean gem setting for making jewelry. Gemology theme. Dark background. Natural royal blue, indigo, violet, purple colour tanzanite oval shaped, faceted, loose transparent, clean crystal, zoisite mineral group, precious gemstone setting for jewelry making, fingers holded. Natural australian precious black multi color play opal freeform cabochon polished gemstone setting for jewelry making. Coober Pedy mined, untreated, real gem. Yellow, blue, green, red, purple flashes Natural tsavorite garnet gem. Rich grass green, transparent, oval faceted, loose, semiprecious gemstone setting for making jewelry. Vanadium grossular variety. Valuable, expensive, popular, desired. Natural treated red ruby oval faceted precious gemstone setting isolated on black background. Front view, bottom semireflection, blur. Closeup macro details, veins, cracks, inclusions, facets Mens, womens, unisex gold ring with CZ, cubic zirconia round white faceted gemstones line settings, diamond imitations. Vintage, textured jewerly. Gray pattern background. Shiny blured reflection. Table salt Isometric, cubic transparent crystal growth from a supersaturated NaCl solution in water. Examples of crystalline structure. Dark background. View from above. USA United States Navy USN 10k solid yellow gold massive vintage mens ring US military. Anchor and eagle details. Black reflective background. Collectible rare jewelry. Vintage USSR Soviet union Womens 583, 14K massive gold ring with lab created Amethyst faceted gemstone setting. 6 photos 1400 x 1050 pxixels in one, plus 5 small photos of natural amethysts. apatite, back light, beautiful, blue, bright, close-up, closeup, collection, colorful, cracks, crystal, crystalline, decorative, details, for faceting, gem, gemology, gemstone, genuine, inclusions, je Round diamond faceted cubic zirconia, cubic crystalline form of zirconium dioxide (ZrO2) colorless synthesized material. White synthetic gemstone. Diamond imitation. Black isolated background. Natural loose faceted topaz gemstones set collage. Swiss and sky blue, light yellow, champagne color, golden brown, azotic pair. Concave trilliant triangle, round, oval, drop, square, checker faceted. Natural deep purple color loose amethysts gemstone setting set. Custom cut, oval and round shaped, checker faceted, high quality finish, polishing, proportions, clarity, saturation. Black background. Natural swiss blue topaz oval faceted gemstone isolated on white background. Clean, transparent, rich blue color faceted gemstone setting for making jewelry. Irradiated topaz stone sample.