Fluorescence in diamonds is the visible wavelengths that the diamond emits under invisible radiation. Nearly all natural diamonds fluoresce under X-rays, and approximately 1/3 of natural diamonds fluoresce under ultraviolet (UV) light, which "excites" the electrons in the diamond crystal.
It took nearly a century and a half of experimentation before the first verifiable synthetic diamonds could be produced, and as yet they pose no threat to the diamond trade
Diamond certification, which is growing increasingly sophisticated as new technology enters the diamond industry, provides consumer protection. Diamonds are sent to laboratories, which then conduct an in-depth grading and produce a detailed report on a given stone's specs
Diamond mines have always been a source of intense speculation, but diamonds themselves, always prized, present some interesting issues for the would-be investor.
In recent years, the issue of conflict diamonds or "blood diamonds" has garnered a great deal of media attention and become a hot-button issue for the diamond industry.
In response to growing concern over illicit trade in conflict or "blood" diamonds, the United Nations General Assembly established the Kimberley Process Certification Scheme in 2003.
The many diamond shapes available can be divided into four general categories of shape, each one of which has particular geometric properties that determine and must be taken into account when deciding how to cut a diamond.
The standard color grading scale used for white or colorless diamonds accounts for a certain degree of yellow or brown, but true colored diamonds – known as "fancies" – are rare and prized.
Nowadays, a quick Internet search will turn up hundreds of results for dealers selling wholesale diamonds that can be acquired as lots or single stones in almost any stage of production
Diamond ore is sorted by density using X-rays. Before that technology became available, grease belts were used to separate diamonds from the rest of the ore, due to the diamonds' greater tendency than other minerals to stick to grease.
While white diamonds are the most common, exposure to certain elements or chemical processes during formation can create colored diamonds
Clarity, one of the vaunted "4 Cs" in grading diamonds and determining their value, measures how free a given diamond is from internal flaws (inclusions) and external flaws (blemishes)
Diamonds, like all precious stones, are measured in carats. The carat dates back to ancient traders in the Mediterranean, who used wheat grains or carob seeds to weigh precious stones
The cut of a diamond maximizes its ability to reflect and refract light and usually refers to the specific arrangement of facets