Product Description
This is a single 4 carat natural Sphene (Titanite) loose gemstone, oval faceted, in an olive-green to golden-brown color range. The stone is untreated and sourced loose, unmounted.
Stone Specifications
- Stone Name: Sphene / Titanite
- Weight: 4 Carats
- Dimensions: 10.2 × 9.9 × 6 mm
- Cut / Shape: Oval Faceted
- Color: Green with golden-brown secondary tones
- Clarity: VS–SI (eye-clean to minor inclusions)
- Treatment: Natural, Untreated
- Birthstone Month: June & August (alternative)
About Sphene (Titanite)
Sphene is a calcium titanium silicate mineral with one of the highest dispersion rates among faceted gemstones — higher than diamond. This trichroic stone shifts between green, yellow-green, and golden-brown tones depending on the viewing angle and light source. It belongs to the category of loose precious and semi-precious stones and is used primarily in custom jewellery settings and collector portfolios.
Typical Uses
- Custom jewellery settings — rings, pendants, earrings
- Loose stone collecting and investment portfolios
- Lapidary and gem study
Frequently Asked Questions
Q: Is Sphene harder than other gemstones used in rings?
Sphene has a Mohs hardness of 5–5.5, which is softer than sapphire or diamond. It is better suited for pendants and earrings than everyday ring wear.
Q: What causes Sphene's fire and color-change effect?
Sphene has an exceptionally high dispersion value (0.051) and is trichroic, meaning its crystal structure absorbs light differently along three optical axes, producing distinct color shifts.
Q: Can Sphene be used as a June or August birthstone?
Sphene is recognized as an alternative birthstone for both June and August. It is not a traditional primary birthstone but is used as a collector's substitute in custom birthstone jewellery.