An interesting tuft of light blue needles was recently observed in a polished modified cube…
COLOURED GEMSTONES
Recently the authors examined a 4.8 cm tall pale blue sapphire crystal (figure 1) that…
Numerous gem materials have been designated “trapiche” in the trade and in various publications. They…
Recently examined in the Carlsbad laboratory was a 26.72 ct transparent violet modified cushion mixed-cut…
A white, non-nacreous baroque pearl weighing 15.53 ct and measuring 19.54 × 13.26 × 11.57…
Amplified with an assortment of precious gemstones, pearls and polkis, jadau jewellery still retains a…
The Carlsbad laboratory received for examination two dark-colored bead cultured pearls embedded with an electronic…
When it comes to clarity enhancement with oils and resins, a common belief is that…
The micro-world of gemology is fascinating and often mimics scenery, landscapes, or, in this case,…
The unusual quartz cabochon shown in figure 1 displays visually appealing dendritic inclusions that resemble…