Natural Gemstones

  THE DIAMOND TESTER Diamond has a much higher thermal conductivity than any of its stimulants, and the tester uses this property to identify both mounted and unmounted stones. The instrument is particularly suited to testing small stones that are recessed in their mount. Consists of: Handheld probe that is fitted with a miniature heating sensor. A control box containing the associated electronic sampling and indicating circuits. Procedure: Short pulses of heat are fed to the probe’s silver test tip. The electronic circuits measure the rate at which this is conducted away into the gemstone under test. A high rate of heat transference will cause the green light to flash indicating that the stone being tested is a diamond. A low rate of heat transference will cause the red light to flash indicating that the stone is probably not a diamond. Do’s: Always check the tester against the test plate supplied or a known diamond before using it. Always allow the rings to cool before testing th...

We have seen that human beings get affected in their daily lives as per the planetary positions of their ruling planets. Also, based on the birth chart, their month of birth is also associated with gemstones which are traditionally associated with the planets. There are 12 zodiac signs in astrology and there are 12 months in a calendar year. Some gemstones are zodiac sign specific whereas some gemstones are birth month specific.  Here we are going to describe those gemstones which are associated with the month of December. Historically, there have been many stories and legends associated with gemstones. The book of Exodus mentions the twelve tribes of Israel and the 12 gemstones associated with it. As per the legends, wearing birthstones according to its assigned month brought about healings. Different countries and cultures in the world have a different birthstone list. Some were because of the availability of certain gemstones in that region, other times it was be...