MINERAL STUFF: AMBER, THE GEM

Amber is a hard resin formed from tree sap by fossilization and is many millions of years old[Ref1]. Since Neolithic times (about 9000-3000 BC) and before the Copper Age[Ref]2) amber has been highly valued as a gemstone and used to create beautiful jewelry and artworks. Wide use of amber in Early Europe and in the. . . Read More

Meteorites

Meteorites are stuff from outer space; each is a solid piece of debris which formed from dust within the protoplanetary disc or from object such as an asteroid, planetesimal, or planet, and which travels through space and falls through the atmosphere to the surface of earth. As alien objects which fall dramatically they have evoked. . . Read More

Precious Coral

Both precious red and black corals are bottom-dwelling sessile marine branched animals that have been harvested at depths between 60 and 20,000 feet [Ref 1, Ref 2]. They have provided lapidarists and other artisans with materials they use to create extraordinarily beautiful jewelry and objects of art, as witnessed by Figures 1 and 2.  In. . . Read More

Art Deco Rubies

Art Deco is my favorite style of jewelry, with its flair of design and the use of unusual combinations of gemstones. Art Deco is a style of architecture and design which first appeared in France just before World War I, reached its high point during the 1925 Paris Exposition of Decorative Arts, and extended into. . . Read More

Ancient Rubies

In this continuation of blogs about the corundum gem varieties, sapphire and ruby, I will first describe the trade routes that first brought the gems, from their mines in the East, to the Roman Empire, then to the rest of Europe. I will also present a gallery of ruby jewelry and artworks designed and made. . . Read More

HARDNESS: A MECHANICAL PROPERTY OF USE IN IDENTIFYING MINERALS

Along with the colors and crystal forms of minerals, their mechanical properties such as the hardness. tenacity, and habits of structural failure can be very useful tools in identifying an unknown mineral. In this first Blog on the use of mechanical properties in identifying minerals I’ll focus on hardness and describe the Moh’s Hardness Scale,. . . Read More

Sapphire – Art Deco

Art Deco is my favorite style of jewelry with its flair of design and the use of unusual combinations of gemstones.  Art Deco is a style of architecture and design which first appeared in France just before World War I, reaching its high point in the 1925 Paris Exposition of Decorative Arts, and extending into. . . Read More

Ancient Sapphires

In this blog I’m displaying examples of jewelry and art objects from ancient Asia and the Mughal Empire.  I also include examples of jewelry from the Roman Empire and the Medieval Victorian Eras in Europe. ANCIENT ASIAN ANCIENT ROMAN EMPIRE MEDIEVAL EUROPEAN RENAISSANCE EUROPE VICTORIAN ENGLAND (EUROPE) REFERENCES Ref 1.  https://onlineonly.christies.com/s/ancient-jewelry-wearable-art/central-asian-gold-sapphire-finger-ring-30/63724 Ref 2.  https://www.internetstones.com/ancient-technology-sri-lankan-gemstone-beads-carvings-cameos-intaglios-carnelian-rock-crystal.html Ref. . . Read More

Largest Star Sapphire/Ruby

We usually think of star sapphires and rubies as stones in the few carat range, not in hundreds and thousands of carats. But some are an amazing size. At the top, are the World’s Largest which are truly awesome. In this blog I’ll describe the worlds largest blue star sapphire, star ruby, and black star. . . Read More

Corundum – From Sapphires to Rubies

Gemstones of the mineral corundum [Ref 1] offer a rainbow of colors for the lapidarist and jewelry maker as displayed in Figure 1.  Traditionally, of these, the ruby and blue sapphire, along with diamond and emerald, are considered to be the four-membered family of precious gems.  Corundum gemstones, other than the ruby and blue sapphire,. . . Read More