李迪克碧玺是一种含钙丰富的锂电气石，于 1977 年被确认为独立矿物种别，其命名是为了纪念 Richard T. Liddicoate（理查德·T.·李迪克），他是 GIA 的第二任校长，被誉为“现代宝石学之父”。

和 GIA 的实践宝石学家们一起，探索巴西的一些最重要，也是产量最高的祖母绿和碧玺矿。

Review of Damiani: Alchemy of Desire.

Nine demantoids reportedly from a new deposit in the Khuzdar area in Pakistan’s Baluchistan province were recently examined.

Strong absorptions from N-V centers were the main cause of a CVD synthetic diamond’s pinkish orange bodycolor.

Review of Yvonne J. Markowitz and Denise Doxey's Jewels of Ancient Nubia.

Auction price records were broken in late 2014 as ultra-wealthy buyers vied for rare, important gemstones.

Examination of a pink-purple spinel revealed what appeared to be a spinel crystal inclusion.

Ten loose pearls with interesting shapes and internal growth features were from Pteria-species mollusks.

Although this stone bore some superficial resemblance to moissanite, its gemological properties were consistent with HPHT synthetic diamond.

Melee diamonds can be efficiently screened for synthesis and treatment using infrared absorption spectroscopy, DiamondView imaging, and microscopy.