corundum in every color

Sapphire

The sapphire is one of the most beloved gemstones of all time: a hard, luminous corundum that we associate with deep blue, but which in nature appears in almost every color. In Giverso’s sapphire jewelry, blue sits alongside pink, yellow, orange and fuchsia, in tennis bracelets, chokers, wedding bands, rings and earrings.

Not just blue: the colors of sapphire

Chemically, sapphire is corundum, an aluminum oxide: ruby is the same mineral and takes that name only when it is red. All the other color varieties are called sapphires. The difference comes from tiny traces of other elements: iron and titanium give blue, chromium gives pink, iron gives yellow. That is why sapphires come in blue, pink, yellow, orange and fuchsia, as well as the rare shades between orange and pink known as padparadscha.

Hardness and durability

At 9 on the Mohs scale, sapphire is second only to diamond in hardness. It resists scratches and everyday wear, which makes it one of the best stones for rings and wedding bands that are worn every day.

Natural or heat-treated?

Most sapphires on the market are heat-treated: heat improves the color and clarity of the rough stone. It is a widespread practice, recognized in the trade for a long time, as long as it is disclosed.

The treatment does not change the nature of the stone, which remains a natural sapphire. Untreated sapphires are rarer and sought after by collectors. If you have any questions about a particular piece, contact us or visit the store.

If you love colored gemstones, discover our Paraiba tourmaline jewelry and Tanzanite jewelry.