Matches 1 - 50 out of 95 1 2 >


Match Document Document Title
8945316 Method for shaping and slicing ingots using an aqueous phosphate solution  
A method for slicing a workpiece into wafers in which a polyphosphate solution is applied to the workpiece during the slicing process. The method comprises the steps of positioning the workpiece,...
8702473 Rock polishing systems and methods  
A polishing system for polishing a flat face of a rock comprises a polishing surface, a fence system, and a drive system. The polishing surface is supported for rotation about a primary rotation...
8616192 Round brilliant cut gemstone and method for cutting the same  
The invention relates to a gemstone (10) comprises a girdle (13), a crown (11) and a pavilion (12). The crown (11) comprises a table (14), eight star facets (15) surrounding the table (14), eight...
8539940 Jewelry bench dust shield  
A jewelry bench dust shield including a base attachable to a jewelry bench, an arm pivotally attached to said base, and a dust shield attached to said arm. A jewelry bench dust shield including a...
8490612 Method of stabilizing opals  
The present invention protects opals during processing from rhyolite nodules. An opal containing rhyolite nodule is soaked in a heated polyester resin, styrene (100-42-5) solution for 24 hours per...
8342164 Gemstone production from CVD diamond plate  
A method of producing gemstones includes obtaining a plate of chemical vapor deposition formed diamond. The plate is cut into a plurality of geometrically optimized preforms. The preforms may be...
7510462 Multi-diamond cutting tool assembly for creating microreplication tools  
In one embodiment, a cutting tool assembly used for creating grooves in a microreplication tool is described. The cutting tool assembly includes a mounting structure and multiple diamonds mounted...
7431632 Control system and method for processing jewelry and the like  
A control system for controlling processing of workpieces such as jewelry has gantry and gimbal units having x, y, z translational and x, y, z rotational degrees of freedom, the units carrying a...
7323156 High pressure/high temperature production of colorless and fancy-colored diamonds  
The present invention is directed to a method for changing the color of colored natural diamonds. The method includes placing a discolored natural diamond in a pressure-transmitting medium which...
7228856 Diamond cutting method and diamond provided by the method  
Ten of pavilion main facets are formed with reference to the previously formed five of first pavilion main facets in which an initial first main facet is formed in a position centered on a line...
7192337 Method for cutting diamond  
To provide a diamond rendering reflective light off a table goldenly brilliant by making a proportion thereof symmetrical at any place viewed from an upper face, a side face or a bottom face, a...
7032586 Single point engraving cutter tip  
An improved single point engraving burin tip, for use in hand engraving and stone setting in the hand engraving and jewelry fields. More specifically, the invention provides a single point...
7000607 Gemstone and corresponding method of cutting  
A gemstone having a crown, a girdle and a pavilion, wherein the girdle is shaped such that, when viewed in plan view, it is primarily bounded by four pairs of parallel straight edges. Three of the...
6915663 Diamond cutting method, enneahedral-cut diamonds and assembly of enneahedral-cut diamonds  
Disclosed is a diamond cutting method comprising the steps of: forming a square or rectangular table in a piece of gemstone; and forming a pavilion continuous to the table by cutting vertically...
6915794 Diamond wire equipped with improved cutting bushes for cutting stone material  
A diamond wire (1) is disclosed for cutting stone material comprising a support cable (2) with around it a plurality of cutting bushes (3) and a plurality of elastic means (5). The cuttting bushes...
6892720 Method for cutting natural and/or man-made diamonds  
A method for producing a diamond includes forming a table lying in a table plane; forming crown facets that are oriented at an angle of between 26° and 35° relative to the table plane; forming...
6881128 Ceramics base plate and method for producing the same  
A method of producing ceramics base plates is disclosed, comprising forming a continuous flaw on at least one surface of a ceramics sintered base plate from end to end using a flawing tool and...
6827075 Apparatus for burning stone  
An automated stone burning apparatus, which precisely adjusts the burning operation and improves the throughput. The apparatus consists of a torch assembly that is mounted in proximity to a stone...
6772748 Method of forming stone inlays in wood and article of manufacture  
A method of forming a stone inlay in an abrasion-sensitive substrate, such as wood, by forming a depression in the substrate, mounting stone on a damping material capable of absorbing the abrasive...
6591827 Method for preparing a diamond  
A method for preparing a diamond having a six-pointed-star shaped girdle comprising: (1) providing a round diamond; and (2) grooving six equally spaced, equally-sized triangularly-shaped 120°...
6397832 Diamond cutting method and new-cut diamond shape  
Disclosed are a new diamond cutting method and a diamond shape or proportion giving an increased brightness and different brilliant colors to the cut jewel. A piece of diamond having a crown or...
6321740 Block splitter assembly  
The invention is a block splitting machine which uses an assortment of protrusions to supplement or replace the action of the splitting blade in splitting and dressing masonry block.
6244262 Method for cutting concrete into predetermined shapes  
A method of forming a decorative shape from a concrete block by cutting the block into a predetermined shaped piece, polishing all flat surfaces and then applying a coating of clear material to...
6199545 Engraving apparatus and method  
Arrangements are taught for decoratively engraving a surface, such as hardened concrete or stone, particularly by engraving stencil-defined swaths into the surface with a tool of the type commonly...
6132291 Specific heat treating process that significantly alters lythic and related materials  
A method of treating stone that produces dramatic natural changes by the use of heat only, the dramatic changes being, deeper more brilliant colors, smoother texture, richer luster, and easier...
6058922 Grinding blade for trowel machine  
The present invention is directed towards an attachment to a trowel machine. The trowel machine attachment converts the trowel machine blade to a grinding blade and allows the trowel machine to...
5762061 Splitting apparatus  
Apparatus for splitting blocks, the apparatus comprising a base (1) which supports a blade (2) with its splitting edge protruding a distance no greater than 5 mm above the base surface, guide ways...
5732690 Apparatus for cutting a stone member so as to have a curved surface  
An apparatus for cutting a stone member (90) so as to have a curved surface including a cutting device (10) having a base member (12) which is movable in horizontal direction by an electric motor...
5711698 Method of synthetic diamond ablation with an oxygen plasma and synthetic diamonds etched accordingly  
A method for ablating a synthetic diamond having a pitted surface includes applying a colloidal graphite to the surface of the diamond and subjecting it to an oxygen plasma so that preferably...
5623916 Method and apparatus for cutting grooves into diamonds and precious stones  
A device for holding and positioning stones that are being prepared for invisible set jewelry. The device includes an automatically cooled blade and a holding member for holding the stone wherein...
5462474 Method of facetting a gem  
A method, and product from the method, of faceting a gemstone in which the facets, when combined with the polishing/non-polishing of the facet form an image such as the Star-of-David. The image is...
5423714 Process for the manufacture of diamond jewellery  
The process serves for the manufacture of diamond jewellery. In order to be able to offer diamonds of individually varying outward appearance and the everlasting advantage of scratch-resistant...
5388484 Method of manufacturing diamond-impregnated drilling crowns  
A method of manufacturing drilling crowns for cylindrical diamond drilling tool bits affords a waste-free fabrication of the drilling crowns impregnated with diamond particles. In a first step an...
5293858 Apparatus and method for cone shaping the crown and pavilion of gemstones  
Apparatus and methods for simultaneously cone cutting of crown portions and pavilions of gemstones are provided by the present invention. Each of the gemstones to be simultaneously cut are...
5190024 Diamond sawing process  
A diamond sawing process, in which guidelines on the outer surface of a rough diamond are used for the sawing of up to six pyramid shapes (340) as fragments from a particular piece of tetrahedron...
5179931 Working gemstones  
In order to brute a gemstone, the gemstone 6 is rotated about an axis and is ground with a small bruting crown 1 rotating about a parallel axis. In the peripheral working face of the bruting crown...
4759130 Goniometer head arrangement  
A unique and novel goniometer is set forth to orient a sample in an X-ray beam, for example, to better than 0.001° without introducing translation. This structure is infinitely adjustable and stable.
4738240 Process for cutting a diamond to provide an invisible mounting  
A process for cutting a diamond to realize an invisible mounting by using cuts situated below the girdle in which may be engaged the mounting. According to the invention the notches (7) have the...
4705933 Method for attaching a diamond component to metal  
A method for attaching a diamond component to metal is described, wherein a layer of brazing material is provided at the interface between the diamond and the metal. A laser is used for heating...
4662348 Burnishing diamond  
Scratch-free polished diamond is obtained by rubbing a surface of the diamond to be polished against a smooth complementary diamond surface with sufficient pressure and velocity to heat the...
4643161 Method of machining hard and brittle material  
An ultramicrotome diamond tool is provided with a diamond knife blade having first and second planar surfaces which intersect to define a cutting edge and a shank for holding the knife blade. In...
4546231 Creation of a parting zone in a crystal structure  
A method of providing a thin parting zone in diamond and other crystal material is used to separate the crystal into multiple parts. The method comprises the following steps. An entrance window is...
4532737 Method for lapping diamond  
An improved method for lapping the facets on a hard material such as a diamond provides faster machining and reduced crystallographic sensitivity. The improved method uses a lapping disc coated...
4425900 Method and apparatus for bruting precious or semi-precious stones  
A method of bruting two precious or semi-precious stones which includes mounting the stones on respective first and second rotating shafts whose axes lie in substantially parallel planes but which...
4417564 Centering and working gemstones  
A rough gem stone is centered by mounting the stone on a dop, providing an image of the stone, as seen normal to the axis, providing a reference shape which corresponds to the shape of a cut...
4417423 Stylus manufacturing method  
A method for forming a face on a crystalline dielectric material having anisotropic crystallographic hardness. The method includes the steps of contacting the dielectric material with an abrasive...
4401876 Working gemstones  
In order to provide a better way of kerfing a gemstone such as a diamond, a high energy, high pulse rate, low order mode, laser beam is employed to cut the kerf. Apparatus for kerfing a gemstone...
4392476 Method and apparatus for placing identifying indicia on the surface of precious stones including diamonds  
A practice for applying indicia to the surface of a precious stone wherein a source of laser energy is directed at the stone surface and controlled to inscribe the surface with the desired indicia.
4323050 Machine for cutting precious stones  
A machine particularly useful for sawing diamonds and other precious stones comprises a pair of horizontally-spaced posts on a stationary frame, each post having a socket open at its upper end of...
4233783 Device particularly useful for cutting or grinding round girdles of gems  
A cutting device is described particularly useful for cutting or grinding the round girdle surfaces of round-cut gems, the cutting device comprising a plurality of cutting heads each formed with a...

Matches 1 - 50 out of 95 1 2 >