Sphene (Titanite) Gemstone: Meanings, Value & Information

Sphene, or titanite, is a rare gemstonebeloved by collectors for having a luster just below diamond'sand a colorful sparkle exceeding diamond’s. That said, is sphene a precious stone? No, sphene is a semi-precious gemstone.

What color is sphene? It’s typically bright yellow-green but can range from colorless all the way to black. But, turn the stone under light and you'll see different colors — with a twinkling rainbow sparkle to match!

Already thinking of checking out sphene jewelry? Come along and discover sphene gemstone meanings, healing powers, prices, and more!

What Is A Sphene Stone?

Sphene is a titanium-rich variety of the mineral titanite and the only variety used for gemstones. That’s right, titanite isn’t just a synonym, it’s also a mineral family.

Besides gems, what is sphene used for? Titanite may be mined as a titanium dioxide ore for pigments.

Scientists also use titanites as geochronometers (tools for measuring geological history via radioactive decay) and thermobarometers (minerals for measuring the pressure and temperature during rock formation).

Wait, is sphene radioactive? Mildly yes. Fashioned or polished pieces are safe, while rough specimens are safe for short periods.

Sphene gems are more affordable alternatives for peridot. Therefore, you can use sphene as an August birthstoneor 16th wedding anniversary gemstone in peridot’s place. Sphene itself is a zodiac stone for Libra, Sagittarius, and Taurus.

Sphene Specifications & Characteristics

Sphene is a calcium titanium silicate. Iron and aluminum are almost always present in sphene, along with rare earth elements (REEs) like cerium, thorium, and yttrium.

REEs can give the gem a “radioactive” bright green hue. However, the iron content is usually too high for sphene to fluoresce.

Some sphene minerals become metamict from cerium. Metamictization involves radioactive materials decomposing the crystal structure, leaving the stone amorphous.

All of sphene’s mineral properties are below:

• Mohs hardness: 5-5.5

• Color: Usually chartreuse, yellow, green, or brown; Can be colorless, blue, red, gray, or black; Color-zoning common

• Crystal structure: Monoclinic

• Luster: Resinous to sub-adamantine

• Transparency: Transparent to translucent; Sometimes opaque

• Refractive index: 1.84-2.11

• Density: 3.45-3.60

• Cleavage: Fair to good on [110]

• Fracture: Conchoidal

• Streak: Reddish-white, pink, or white

• Pleochroism: Moderate to strong in transparent stones; Trichoic colors differ based on gem’s color, but usually light yellow, orange-brown, and brownish-yellow; Some blue crystals have colorless to blue dichroism

• Optical effects: Very rarely color-changing

Some sphene properties (and types) slightly vary based on locale.

Image: Chrome sphene variety

Types of Sphene

There aren’t official sphene varieties, but we’ll highlight two unofficial types you may see while shopping:

• Chrome Sphene: Valuable emerald-green variety colored by chromium, mostly from Baja, California, USA

• Capelinha Sphene: Extremely rare, high-quality, lime-green variety from Capelinha, Brazil

Moving to the metaphysical, what is the meaning of sphene?