Geology

Recent Answers

2009-11-21 Jewelry, Gems, & Minerals - is my crucifix 14KG?:

Mary, jewelry is being manufactured in many countries in the current market. Turkey is exporting a lot of jewelry to other countries such as the USA. Pendants are often stamped on the bail or portion

2009-11-20 Jewelry, Gems, & Minerals - Plating a metal ring:

Grace, I understand the value of this costume jewelry ring to you. Yes, it does help represent a very significant part of your life. Unfortunately, that first word in this sentence answers it all

2009-11-19 Jewelry, Gems, & Minerals - Diamond vs Cubic Zirconia:

HI JEFF, CZ DOES NOT FLOAT IN WATER. DIAMOND HAS A AFFINITY FOR OIL OR GREASE AND WILL GET A DULL LOOK TO IT IF NOT CLEANED REGULARLY. ALL THE OTHER TESTS YOU MENTION THE FOG TEST, THE LIGHT TEST, SCRATCH

2009-11-19 Jewelry, Gems, & Minerals - Gold filled quality marking:

Michael, metal quality marks vary somewhat from country to country and I am not an expert on markings for other countries. The precious metal markings for sterling, gold and platinum alloys are fairly

2009-11-18 Geology - Geology--Earthquakes in Subduction Zones:

Think of the surface of the earth as pieces of flexible foam (continental plates)floating in a swimming pool. Now add a strong breeze. When one piece of foam hits another piece the heavier of the two