Yellow Tourmaline

Yellow tourmaline is a natural mineral: the yellow color range of tourmaline, a group of closely related borosilicate mineral species. The name does not fix one species. According to Gems & Gemology, the most important source of yellow gem elbaite is the Canary mining area in eastern Zambia, whose manganese-rich stones have been marketed as Canary tourmaline since 2001, while GIA notes that bright yellow "savannah" tourmalines are dravite–uvite mixtures colored by iron.

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Tourmaline (yellow)
Tourmaline (yellow)

10mm

$9.99 Available

Full material guide
Material facts

What the material is, where it comes from or how it is made, identification and care, from the cited sources.

Properties

Nature Natural mineral (yellow color variety of tourmaline); often heat-treated
Mineral species Tourmaline group; commonly manganese-rich elbaite (Canary tourmaline); some yellow stones are dravite–uvite mixtures
Chemical formula Elbaite: Na(Li1.5,Al1.5)Al6Si6O18(BO3)3(OH)4
Color Yellow-green to yellow, orange and brown in the rough; orangy yellow stones also occur
Cause of color Canary tourmaline: manganese (Mn²⁺ and Mn²⁺–Ti⁴⁺ charge transfer); savannah tourmaline: iron
Common treatments Much Canary tourmaline is heated to 500–550°C to reduce brown/orange; irradiation can also produce yellow
Crystal system Trigonal
Refractive index 1.624 to 1.644 (tourmaline, GIA)
Birefringence 0.018 to 0.040
Specific gravity 3.06 (+0.20, −0.06)
Mohs hardness 7 to 7.5
Electrical property Pyroelectric and piezoelectric: becomes electrically charged when heated or squeezed

Origins & sources

Gems & Gemology reports that the Canary mining area, 32 km west-southwest of Lundazi in eastern Zambia, has produced yellow manganese-rich elbaite since 1983 from both pegmatite and eluvial/alluvial deposits; most cut stones are small (under 1 ct). Other occurrences of yellow manganese-rich elbaite include Madagascar, Elba (Italy), Austria, Nepal, Russia, Tajikistan and Mozambique. GIA shows orangy yellow tourmaline from the Merelani area of Tanzania, and IGS lists yellow dravite from Kenya.

Identification

The gemological properties of Canary tourmaline are typical of elbaite; its distinctive feature is chemical, with high manganese, traces of titanium and little or no iron, which only laboratory analysis shows. Much orange-to-brown rough is heated to 500–550°C to obtain a "golden" or "canary" yellow. IGS notes that irradiation can produce yellow tourmaline and that such color may fade and cannot be detected. Yellow manganese-rich stones have been sold as "tsilaisite", but IGS reports that tested Zambian stones are manganese-rich elbaites, not that species.

Care

GIA rates tourmaline 7 to 7.5 on the Mohs scale with fair toughness. It is generally stable to light and is not affected by chemicals, but high heat can change its color and sudden temperature changes can make it fracture. Colors produced by irradiation can fade with heat or bright light. Clean it with warm, soapy water; ultrasonic and steam cleaners are not recommended.

History & culture

History

Gems & Gemology records that yellow tourmaline from eastern Zambia was first documented by Schmetzer and Bank in 1983, after the Canary mining area had first been worked for quartz and its brown tourmaline discarded. From 2001 buyers began creating a market for the stone in Japan, where it gained popularity and commanded high prices, and it has been marketed as Canary tourmaline since then.

Cultural meanings

According to GIA, ancient mystics believed tourmaline could inspire artistic expression because of its wide range of colors.

Traditional beliefs

Tourmaline is listed as a birthstone for October, alongside opal, and as the gem of the eighth wedding anniversary.

Sources

Collected Oct 23, 2026