Category: Market Trends

Tsavorite Garnet

The colored gem market has more to offer than the big three (ruby, sapphire and emerald) in recent decades. Availability of bigger and higher quality garnets in a range of colors beyond the classical red varieties…

Bi-Colored Sapphire

Ruby and blue sapphire may be the most popular varieties of corundum but nature is capable of producing other interesting varieties too. Although commonly known for tourmalines (watermelon) and quartz (ametrine), multicolored examples exist in…

Sphene

Consumers are more aware of unusual and rare gems in the global market. This awareness is supported by high end jewelry designers using stones such as sphene. This fiery gemstone’s correct mineralogical name is titanite…

The Big Three Plus Diamond

The GemGuide has now been publishing colored gemstone prices since 1982 and diamond prices since 1985. During the past 35 years, gem prices have fluctuated for various reasons. The chart that appears below is a…

Morganite

Demand for pink gemstones has been fairly strong in recent years. Morganite, the light pink to orange-pink variety of beryl, has been entering the market in greater than typical quantities during the past few years…

Blue Zircon

Unusual gems have been gaining popularity recently amongst consumers. Zircon, known for its attractive properties, is one of them. Brightly colored varieties with diamond-like dispersion have long been the cause of dealers’ fascination with zircon…

Cuprian Tourmaline

Discovery of vivid blue, green, and purple-to-violet tourmalines, a.k.a., “Paraíba” in Batalha, Brazil in 1982 changed the way the gem market perceived tourmalines. The unquestionably vivid colors were due to copper and this color agent…

Market Trend-Burmese Ruby

Ruby, the king of gemstones, has traditionally been much rarer than sapphire in nature, although both are varieties of the same mineral. This rarity is a major factor in pricing fine and extra fine quality…

Market Trend: Purple Garnet

Availability of bigger and higher quality garnets occurring in a range of colors, including the color-change variety, has been noticeable during recent gem shows. The use of garnets as a gem material has been known…

Diffused Sapphire

Diffusion treatment of corundum is achieved at extremely high temperatures and involves adding certain elements such as Beryllium (Be), Titanium (Ti) and/or Chromium (Cr) to the process. The diffusion of Be into corundum results in more desirable yellow, orange…