Largest Tsavorite Found
This tsavorite was exhibited in Tucson at the gem show. Weighing 325.13 carats, it is reported to be the largest tsavorite ever cut. According to Michael Couch & Associates, the stone was found in the…
Gem NotesMarket Trends: Origin Makes a Difference
While we are not strong believers in the origin issue, especially when origin overshadows quality, we do recognize that the market will set the price. If collectors desire origin and are willing to pay a…
Market TrendsDisclosing and Explaining Treatments- A Business Model for Retailers
An example of a systematic disclosure module that enables retailers to enlighten the positive aspects of their enhanced gemstones is provided. The system is based on the degree of enhancement/treatment, the rarity of routinely enhanced…
Featured ArticlesColored Stone Market
Preliminary results suggest that the bulk of holiday sales are last minute again this season. Sales of luxury products are proving strongest in the entertainment categories. However, jewelry sales are expected to be slightly improved…
Colored Stone MarketTechnology Update- Ultraviolet Light
Ultraviolet light sources for testing gem fluorescence have been a staple piece of gem equipment for decades. Emerging technologies will not only change the way you look at ultraviolet but will eventually redefine our industry…
Featured ArticlesThe Tourist Trap Debate
Every year, tourists purchase jewelry from port town shops, major city tourist areas, and even from cruise ships, either on board or at a recommended local store. The vacation is a great memory until they…
News ArchiveFancy Pink Diamond?
Recently we examined a custom-made ring that contained a cushion cut center diamond surrounded by 28 round fancy pink melee. The ring also contained other round brilliants in the setting. We estimated the center diamond…
Gem NotesNatural Yellow Sapphire
Recently a subscriber submitted a cushion cut yellow sapphire weighing 5.13 carats for an estimate of wholesale value. The stone exhibited a fairly even yellow color consistent with GIA GemSet Y4/5. Our initial examination was…
Gem NotesMarket Trends: Ruby Availability and Value Based on Treatment
The lead article in this newsletter on Disclosing and Explaining Treatments has references to the availability pyramid shown below. Along with this chart is a theoretical value chart based on treatment. These charts illustrate the…
Market Trends