Genuine Ruby Corundum A grade round beads 3-4mm (ETB00206) handmade gemstones

Genuine Ruby Corundum A grade round beads 3-4mm (ETB00206) handmade gemstonesA ruby is a pink to blood red colored gemstone, a variety of the mineral corundum (aluminium oxide). The red color is caused mainly by the presence of the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem quality corundum are called sapphires. The ruby is considered one of the four precious stones, together with the sapphire, the emerald, and the diamond. Prices of rubies are primarily determined by color. The

It often has a sparkly effect

Size: 24 x 25 x 2 - 29 x 29

Size: 10 x 18 x 4

Radiolarite or radiolarian chert is a high silica sedimentary rock which may be considered a variety of chert

greenish-yellow

-this is only an approximate

The gemstone comes in green

but it needs barium to also be present to create this variety of quartz

which is generally harder and darker (the difference is not rigidly defined

called santerna by the Romans

Peach aventurine is a slightly translucent to opaque crystal from the quartz family

Size: 6 - 7 mm