Diamond cutting

B. Watermeyer, Diamond Cutting, Purnell, Capetown, Johaimesburg, London, 1980, pp. 29—32. 

Figure 2.1. Various forms exhibited by crystals, (a) Polyhedral crystals (b) hopper crystal (c) dendritic crystal (snow crystal, photographed by the late T. Kobayashi) (d) step pattern observed on a hematite crystal (0001) face (e) internal texture of a single crystal (diamond-cut stone, X-ray topograph taken by T.Yasuda) (f) synthetic single crystal boule. Si grown by the Czochralski method (g) synthetic corundum grown by the Verneuil method.

Sunagawa, T. Yasuda, and H. Fukushima, Fingerprinting of two diamonds cut from the same rough. Gem and Gemrrwlogy, Winter Issue, 1998,270-80... 

To form the array a 70 /un thick poled sheet (5x0.6 mm) of PZT is bonded between two metallized polymer sheets. The PZT is sliced into the 64 elements by diamond-cutting, the cut just penetrating the bottom polymer layer so allowing the whole to be wrapped around the catheter tip. The outer polymer film, about 20 /nn thick, serves as a 2/4 acoustic matching layers and also carries the thin copper tracks to electrically address each element. 

Diamonds Cutting tools, abrasives South Africa, Zaire 98... 

Hardmetals are also used as a support for polycrystalline diamond cutting tips, or as matrix alloy for diamond grit, used in rock drilling and oil mining [9.2]. 

Specimen Preparation. The demolded castings were cut using a circular saw with a diamond cutting wheel to provide specimens for the various tests. 

C (diamond) Cutting tools and wear-resistant coatings heat sink in laser diodes optical components... 

An unpolished diamond in our hand is not much more than an investment. An artfully polished diamond becomes an object of aesthetic value. The diamond cutting technique is ruled by the law of total reflection. 

The way a diamond is cut is one of the 4 Cs that gemologists use to determine a diamond s value. If diamond is the hardest mineral on Earth, then how is it possible to cut a diamond Diamond cutters use other diamonds and lasers to create facets that reflect and refract light. The more precisely the cuts are made, the greater the gems brilliance. If a diamond cut is too shallow or too deep, light escapes from the diamond without traveling back to the eye, resulting in a lackluster appearance. 

Figure 4. Natural diamond cutting tool machining a contact lens.

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