Calcareous Concretions – Natural, Rough, Pink
This vintage ring shows off a quahog pearl with an attractive color gradient. © Kojima Pearl. Used with permission.
This vintage ring shows off a quahog pearl with an attractive color gradient. © Kojima Pearl. Used with permission.
Faceted morganite, 2.01 cts, Brazil. Photo by DonGuennie. Licensed under CC By-SA 4.0.
Cubic zirconia (CZ) can be manufactured colorless or in almost any color, so it can simulate not only diamonds but also many colored gemstones.…
If you prefer untreated gemstones, they’re not too difficult to find in tourmalines. This untreated pink tourmaline would make an excellent…
Carved rhodonite tiger, 10 x 16 x 3 inches. Photo courtesy of liveauctioneers.com and Hamilton’s Antique Auction Gallery.
Quartz rough is a good choice of material for novice faceters learning about gemstone orientation. Rose quartz rough lot, 134 ctw. Photo courtesy…
This round, pink tourmaline has a clarity grade of VVS and appears eye-clean. “Saturn’s Star” cut by Loren Brown. 13.6 cts, 14.9 x 14.9 x 11.2,…
Although some topaz crystals can weigh hundreds of pounds, pink topaz gems rarely reach more than five carats. At 58+ carats, this extraordinary…