Rock Creek（岩溪）蓝宝石矿床的更新消息 (英语)
An overview of recently expanded sapphire production at the Gem Mountain mine near Philipsburg, Montana.
Diamond Slices
Synthetic Sapphire with Diffusion-Induced Color and Star
Diffusion treatment is used to induce color and asterism in a colorless synthetic sapphire.
Crimson Prince Ruby from Namya
Baroque Pearls
Large Namibian Demantoid Garnet
Green Nephrite Jade Attracts Buyers in Tucson
An update on the nephrite jade market from the 2015 GJX show.
Nonbead-Cultured Pearls from Strombus Gigas
Advances in pearl culturing are seen in a parcel of specimens from Strombus gigas gastropods.
Unique Tourmaline Necklace
An unusual parti-color tourmaline necklace and clasp are seen at the 2015 AGTA show in Tucson.
Unusual Combination of Inclusions in Synthetic Star Sapphire
A hexagonal boundary, usually found in natural material, is observed in a synthetic star sapphire.
Blue Chalcedony Partially Filled with Epoxy Resin
A carving identified as blue chalcedony shows evidence of epoxy resin treatment.
Maine Pegmatite Workshop
A report summarizing the expeditions and lectures at the June 2015 pegmatite workshop in Poland, Maine.
Large Cat’s-Eye Emerald from Brazil
A translucent Brazilian emerald exhibiting pronounced chatoyancy is examined.
.jpg "YMAL GIA Ed")
