切尔西过滤器
This filter is designed to transmit only deep red and yellow-green light (best obtained under strong electric light).
Just hold the filter close to your eye and look at the stones. Multiple stones can be viewed at once.
It is helpful with identifying certain red, blue and green stones.
Chelsea filters are primarily used for spotting fakes added to colored stone parcels and mixed in jewelry, and to differentiate emerald from emerald look-alikes, it is also useful for checking aquamarine and sapphires.
With the filter emeralds usually appear distinctly red or pinkish in color, while most imitations remain green.
In rare cases certain emeralds, most notably from South Africa, may not show any pinkish color at all.
A synthetic emerald will react the same as a genuine one.
If you want to know more products, please visit our website www (dot) .
在线联系供应商
Other supplier products
 |
bechn型偏光镜 | Polariscopes are used to quickly and easily check if gemstones are single or double refracting. It Is very useful in identifying Moissanite and de... |
 |
土壤水分测定仪 PHS0012 | 4 in 1 Soil Survey Tester can test pH Value of soil, Moisture,Temperature(°C & °F) and Environment Sunlight Intensity by using a probe... |
 |
蜂蜜湿度测量折射仪RHF-30ATC | This model is specially developed for the measuring of the water concentration in honey. It's FULLY EQUIPPED with ATC that automatically adjust its... |
 |
0-32% 糖度啤酒酿造折射仪RSG-100ATC | This hand-held optical refractometer measures the density of sugars in the solution and gives you an instant gravity readings at any point during t... |
 |
58-90% 糖度、蜂蜜折射仪RHB-90ATC | The RHB-90ATC Brix Refractometer is designed to work with sugar related liquids such as high sugar content, honey, jelly, jam and syrup to help mon... |
Same products
 |
KL‑03(I) Pen‑type High‑precision pH Meter | 卖方: 科立龙电子股份有限公司ctron Co.Ltd | Product Description: This instrument is available in a variety of colors. Calibratio... |
 |
KL‑911 Pen‑type High‑Precision pH Meter (with Backlight Display) | 卖方: 科立龙电子股份有限公司ctron Co.Ltd | Product Description: The KL‑911 Pocket Digital pH Meter is equipped with a backlight... |
 |
PH‑260BD Bluetooth‑Enabled Water Quality Monitor for pH / Conductivity / TDS | 卖方: 科立龙电子股份有限公司ctron Co.Ltd | Product Description: Wall‑mounted design for easy installation, operation and mainte... |
 |
china manufacturer flowmeter D2-FA65-65C/RL for power generation | 卖方: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | "China manufacturer flowmeter D2-FA65-65C/RL for power generation Is to use the generator sets of... |
 |
Petroleum and Natural Gas Industry Vacuum Gauges -60kpa | 卖方: Greentech Industry (Jinan) Co., Ltd | 1.High-performance and robust design: The High-Pressure -60kpa Vacuum Gauges Electric AC Blade Bl... |
