GRAVERS, SCORPERS, SCRAPERS & DEBURRING
See Website full product information. Code
E9451
Description Chelsea Filter
Conoscope Rod Jadeite Filter
UOM EACH
Price £24.85
examining which parts of white light are absorbed by a gemstone (as well as by other materials).
See Website full product information. Code
Description E33808
Prism Spectroscope with Focus Option
UV Long Wave Pen UOM EACH Price £89.95
A simple instrument used to observe interference figures in gemstones such as quartz, the Conoscope Rod is used in conjunction with a polariscope to determine whether the stone is uniaxial or biaxial.
• Strain free spherical glass lens • 59 x 10 x 10mm
• Gem-A Code
G56314 Description Conoscope Rod, Gem -A
Darkfield Loupe, Gem A
A darkfield loupe allows a gemstone to be observed against a dark background with lateral illumination, allowing for easier study and identification of coloured gemstone inclusions and fracture filling.
See Website full product information.
Incorporates two polarizing sheets mounted at right angles to each other allowing the London Dichroscope necessity to samples rays from two different areas of the same stone.
Code L53126 Description Darkfield Loupe, Gem A
UOM EACH
Diffraction Spectroscope Price £49.95
Examples are views of a Tourmaline/ruby gemstone with a London Dichroscope with a back light. With the same ray of light entering the gemstone both sides should be the same colour under the filter.
See Website full product information. Code
Description E9519 London Dichroscope
UOM EACH
Price £33.95
Prism Spectroscope with Focus Option
GRAVERS, SCOR- PERS, SCRAPERS & DEBURRING
For pure transparent (non opaque) stones. Each type of stone has its own spectrum colour diagnostic. Simular to the prism spectroscope but works by diffracting white light to give non prismatic perspective.
It may be used to test transparent gem materials including rough and broken pieces, fashioned pieces, strings of beads, gems set in jewellery, ornaments and carvings.
See Website full product information. Code
Description E9518 Diffraction Spectroscope
UOM EACH
Price £53.85
Used to test less pure transparent (opaque) gem materials including rough and broken pieces, fashioned pieces, strings of beads, gems set in jewellery, ornaments and carvings.
The focus option allows you to focus the lines better. Prism spectroscope (based on dispersion) is a tool for
www.COUSINS .COM
With various industries demanding the highest quality tools, Vallorbe gravers have been the forefront market leader in this field. Used by industry experts all over the world on millions of pieces there is very little the Vallorbe Graver has not touched.
Tools for engraving, setting, chasing, sculpting, etc are inexpensive compared with the cost of essential tooling to practice other crafts. One is able to buy the essentials for a lifetime of manufacturing, leaving only the expense of replenishing consumables.
At Cousins Material House Ltd we distribute a full range of Swiss Vallorbe gravers and accessories for a wide variety of modern day workshop applications for manufacturing, repairing, craftwork, hobbyists and work in the fine arts.
UOM Price EACH
Used for differentiating between natural and dyed green and lavender jade.
• Very effective tool in the use of separating red, blue and green stone from others that might look similar in comparison.
• Extremely useful in detecting certain dyes treated on gemstones.
See Website full product information. Code
£8.95 E33835
Description Jadeite Filter
London Dichroscope
UOM EACH
Price £24.50
• An instrument which detects the fluorescent reaction of diamond
• Used to judge the colour grading & positioning of stones
• Distinguishes stones according to the distinctive colour emitted by the long wave UV light
• Applies to gems such as natural ruby from Myanmar, opal, amber synthetic ruby, spinel and sapphire, YAG etc
• Many natural diamonds emit a distinctive glowing blue colour under UV light and other coloured diamonds give a particular light
Specifications • Ø20mm • 100mm long • Lightweight & portable • Requires 1 x AA batteries, reference MN15006 (not included)
Code U40268 Description
Ultra Violet Long Wave Pen, A*F Swiss
UOM Price EACH £38.95
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