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. In fact, these quantities are …

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. Today it is making a …

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 was not documented in tourmaline …

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 ruby. The classic Burmese ruby …

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 for thousands of years. Garnets …

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, blue and red colors depending on …

Emerald

Emerald is undoubtedly the most popular variety of beryl. Due to its unusual formation, emerald has a tendency to contain fissures and fractures that diminish its transparency. Included stones are expected and high clarity stones are rare. Color of emerald is a matter …

Aquamarine

Aquamarine is considered to be the second most popular variety of Beryl after emerald. Most gem quality aquamarine forms in pegmatites in considerably large sizes and high clarity. Eye clean material is common. The color description of aquamarine is very specific. As the name suggests greenish blue to blue colors define …

Mozambique Ruby

High prices for better corundum were easily observable during the Tucson Show this year. Although record prices are achieved at the auction level globally, there is now some pressure to keep prices down for good to lower fine grade ruby …

Blue Star Sapphire

There has been a steady price increase observed in blue star sapphire market in recent years. Interestingly, the upward trend is caused by growing scarcity of the high quality sapphire in general and not a spike in demand for star …

Imperial Topaz

It is stated in this colored stone market report that imperial topaz in the best quality is scarce and prices have gone up. What used to be a few hundred dollars per carat is now a few thousand dollars per …

Round, Bead Nucleated Chinese Freshwater Pearls

Cultured pearls, especially the fine quality Chinese Freshwater varieties, are one of the fastest growing sectors in the gem trade. Many varieties of Chinese freshwater pearls have earned widespread consumer appeal across the global market. However, visual similarity of these …

Spinel

The global gem market has seen the revival of spinel as a popular gem in recent years. Consumers are more aware of its beauty and rarity and recognize it as a gem in its own merit rather than an alternative …

Garnet

The Tucson 2015 Gem Show demonstrated that there are considerably more options than just the big three (ruby, sapphire and emerald) for buyers seeking fine quality gemstones. The availability of bigger and higher quality garnets in a range of colors, …

Diamond Cut Quality Trends

It was 1985 when we first started to report diamond prices in the GemGuide (1982 was the initial start of the publication, then known as The Guide, but did not include diamonds until later). Back then the introductory text stated …