- Q. What is gem enhancement?
- A. Gem enhancement is a man-controlled process that improves the appearance, durability, or value of a gem. Using that definition it is safe to assume that a huge majority of all colored gems are enhanced in some way. There are four processes used to enhance gems: temperature, radiation, chemicals, or surface modification. All of these treatments are used to improve the color and overall appearance of the gem. In fact, many of the gem colors we are familiar with today would not be possible without some form of treatment. Almost all colored gems are treated in some fashion and most of the treatments are permanent.
- Q. What is a clarity enhanced diamond?
- A. Any diamond that has undergone a man-controlled process to improve it's clarity is considered clarity enhanced. There are two popular processes used today, laser drilling and fracture filling. Laser drilling involves drilling a hole and injecting bleach into the diamond to lighten dark inclusions. Fracture filling also involves drilling into the inclusion but, rather than bleach the inclusion, silicon is injected into the diamond therefore disguising the inclusion to the naked eye. Laser drilling is a permanent enhancement method however, heat applied to a fracture filled diamond will turn the silicon black and in many cases this cannot be repaired. These enhancements are ethical only if disclosed to the customer before purchase.
- Q. What is Moissanite?
- A. Natural diamonds are formed deep in the earth by heat and pressure. Moissanite is created in a lab setting using heat and pressure similar to nature's elements. Although moissanite exhibits the same physical characteristics as natural diamonds there are some differences. Mossanite exhibits double refraction under magnification. This will interfer with normal light reflection and dispersion. In addition, scientists have yet to develop a process which will produce a colorless Moissanite. Most exhibit a yellowish tint. The price for Moissanite is less but it is not inexpensive. A 1.0 carat Moissanite averages between $650 and $1000.
- Q. What is the difference between saltwater and freshwater pearls?
- A. A saltwater pearl, often refered to as an Akoya pearl, is grown in oysters in the sea. Freshwater pearls are grown in mussels in freshwater lakes and rivers. Both are considered cultured. Saltwater pearls are more expensive as a rule, due to their rarity. Freshwater pearl technology is improving however, and with that the quality of the pearls produced. Freshwater pearls are are most noted for their use in fashion jewelry. Both varieties come in a wide selection of colors and sizes.