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Jewelry with a Capital J, Understanding Basic Jewellery Terms, Processes, and Techniques
From princess cut engagement ring. It is easy to feel intimidated and out-of-place when you’re visiting a high-class Jewelry shop for the first time. To avoid making unwanted and uniformed purchases, improve your knowledge about Jewelry starting with the tips below. If you speak the same language people in the Jewelry industry speak then you’ll surely go home with the Jewellery piece you want, need, and definitely can afford.
The Meaning of Diamond
A Gemstone may be a rock, mineral, or even a petrified material that’s cut and polished to be used for making Jewellery pieces. It may be even harvested like pearls or organic like amber, just as long as it has aesthetic appeal. In the old days, precious Gemstones only referred to the Big Three: emeralds, sapphires, and rubies. Everything else was labeled as semi-precious Gemstones.
Categories today, however, have been thankfully changed and widened to avoid further confusion.
The Ins and Outs of Lapidary
Lapidary refers to the process of cutting and polishing Gemstones. Rough materials are left uncut and unpolished. Cobbed materials are referred to as fractured. Materials like silicon carbide and Diamond, due to their hardness, are used for cutting Gemstones in a progressive abrasion process. Compounds like aluminum and chromium oxide are, on the other hand, used for polishing Gemstones.
Common cutting techniques include tumbling, drilling, polishing, lapping, sanding, grinding, and sawing. Cut Diamonds are then polished into several forms such as sculptures, intaglios, cameos, mosaics, intarsias, inlays, spheres, beads, cabochons, and faceted stones.
Sawing The main tool used in sawing is a copper or steel blade with Gem grit on the edges. Water or oil is used to eliminate cutting debris and prevent the blade and stone from overheating.
Grinding Diamond-impregnated grinding wheels made of silicon carbide are used to grind Gems and shape them into a pre-form. Liquid substance is also used to prevent both the stone and tool from overheating.
Sanding This process is similar to grinding but utilizes finer abrasives instead. It is often performed as a follow-up after grinding for removing scratches caused by the previous cutting technique. For round Gems, a belt sander may be used in accompaniment to ensure smoother and rounder curves.
Lapping A lap, which is a flat disk that’s either vibrating or rotating, is used to create flat surfaces rather than round ones. The process however is similar to sanding and grinding.
Drilling This technique is used if the lapidarist wishes to create a hole through or in a Gem. Drilling tools may be rotating or ultrasonic.
Tumbling A Gemstone that’s placed in a rotating barrel filled with water and abrasives is tumbled for polishing. These Gems are usually roughly shaped and the polishing process is gradual and performed with interval washings. Sometimes, vibratory machines are used in lieu of rotating barrels. This time, the barrels vibrate rather than rotate. Tumbling techniques are also used to polish metal Jewelry pieces.
Cabochons Cabbing or cabochon cutting is achieved by gluing or dopping the Diamond into a metal or wooden dopstick or simply holding it in place. The cabbing machine then twirls and creates a round smooth surface top and a flat or slightly rounded bottom for the Gemstone. This is usually an alternative to faceting for Diamonds that possess too many inclusions.
Faceted Stones Gemstones that have faceted forms reflect brilliant color and clarity from all sides and at all light levels. This technique is most suitable for transparent stones. Today, new techniques like grooves and concave facets are used to create new looks for faceted Diamonds.
The Importance of Cut and Polish in Gemstones
Cut is one of the all-important 4C’s and which is used not only to appraise Gemstones but Diamonds in general as well. Diamonds are often cut with regard to their size alone. But beautifully cut Diamonds take their color into consideration as well.
If you are shopping for faceted Gems, one way of determining the excellence of its cut is to check if its able to reflect light on a consistent level throughout its surface. Look for symmetrical rather than asymmetrical cuts as well. Lastly, be reminded that cut is different from shape.
Polish is simply like adding the final touches to a Diamond. A well-polished Diamond is one with evenly smooth gloss and with no visible scratches on its surface.
For more see unique cushion cut engagement rings and low cost diamond solitaire engagement rings.
Rock’s Lapidary 6″ trim saw
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Lapidary Equipment: New 1200 x 0.1 Gram DIGITAL LAB SCALE! Weigh Rough Gems, Lapidary Slabs, Stones for Cabbing, Faceting & More! Weighs over 1000 Grams, over 6,000 CARATS! $32.98 This DigiWeigh DWP1001 model digital tabletop scale is the perfect tool for anyone handling objects such as rough gems, lapidary slabs, gold/silver bars & ingots, scrap jewelry, crystals, fossils & other specimen. The CARAT, GRAM, and OUNCE modes are perfect for measuring rough, uncut treasures, jewelry, coins & bullion. The GRAIN mode is commonly used to weigh archery arrows & gunpowder for reloa… |
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Diamond Photo Mugs Cut and polished diamond. Diamond is a naturally occurring form of carbon that has crystallised under great pressure. Pure crystals are colourless and transparent, and can be polished to sparkle in the light. Diamond is the hardest known mineral. Poorer quality specimens are used in industry, mainly as cutting and grinding tools….. |
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tightrope / lapidary 45 rpm single … |
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Pro-Quality 20-Piece Diamond-Point Bit Set for Rotary Tool – Glass, Stone, Ceramic $1.10 Professional Quality, 1/8 in. Shank, 180 Grit. Includes 20 assorted shapes covered with diamond particles. All bits have 1/8 in. shanks and come in convienient plastic holder. Excellent for fine detail work, cutting, engraving, carving, touch-up and finishing. Use on wood, jade, ceramic, glass, hardened steel, semi-precious stones and other hard materials…. |
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50pc DIAMOND BURR SET- Ceramics Tile Glass Lapidary for ROTARY TOOLS $14.15 Assorted shapes and sizes for your work. Use them to remove burrs on glass, metal, stone, wood, ceramics, fiberglass and plastic. Diamonds are nickel-bonded to the surface and are of fine to medium grit. Each has a 1/8” shank for use with motor tools, drills, high speed die grinders, and flex shafts. Set comes in a PVC case…. |
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SE 11 Rock Pick Hammer $13.00 Brand new 20 oz Rock Pick Hammer. This heavy, well balanced hammer has a rubberized hammer for a comfortable grip. This hammer is made of a single piece of drop forged metal…. |
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Lortone 3A Lapidary Rock Gem Rotary 3 Lb. Tumbler New $94.29 Lortone Model 3A Rotary Tumbler Great For Tumbling Rocks. This is a new Lortone model 3A rotary tumbler. It runs on 115V, 60Hz. This model 3A Lortone rotary tumbler is quite simple to operate and gives excellent finish to your stones. It has a molded rubber barrel with screw down closure Barrel interior. Holds up to 3 pounds. The barrel interior measures approximately 4″ diameter x 4″ deep (101 x … |
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Lortone Lapidary Double Barrel Rock Tumbler 33B $140.28 Lortone Model 33B Rotary Tumbler Great For Tumbling Rocks This is a new Lortone model 33B rotary tumbler It runs on 115V, 60Hz This model 33B Lortone rotary tumbler is quite simple to operate and gives excellent finish to your stones The twin 3 lb barrels allow you to tumble twice as much at once Polish one load while grinding another Each barrel interior measures approximately 4″ diamete… |
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LORTONE 45C Lapidary Rock ROTARY TUMBLER $121.77 Lortone Model 45C Rotary Tumbler Great For Tumbling Rocks. This is a new Lortone model 45C rotary tumbler. It runs on 115V, 60Hz. This model 45C Lortone rotary tumbler is quite simple to operate and gives excellent finish to your stones. It includes a molded rubber barrel with a quick seal closure. The barrel interior measures approximately 5 3/4″ diameter x 3 3/8″ deep (46 x 86 mm)…. |
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Collecting Rocks, Gems & Minerals: Easy Identification – Values – Lapidary Uses $11.28 Three Guides in One! Identification, Values, Lapidary UsesDesigned with beginners in mind, yet filled with valuable technical information for advanced collectors, Collecting Rocks, Gems and Minerals takes you from being just someone who appreciates rocks to a true “collector.”Easy-to-use, quick reference format arranged by category and color of stoneCovers both lapidary and mineral display materia… |