Sunstone

A variety of Oligoclase

Precious GemstoneUncommon
Sunstone specimen - rock identification

What is Sunstone?

Sunstone is a type of feldspar that can often be yellow, orange or red and have a distinctive glitter called aventurescence. The most famous deposits in the United States are located in Oregon. Sunstone's lack of hardness means it is most often used for earrings, small pendants, and beads and is rarely subject to rough wear.

Uses & Applications

Sunstone is set into rings and used for earrings and necklaces. Smaller pieces of the stone often decorate spas and meditation centers. Along with being carved into beads and cabochons, the stone is also used for small figurines and sculptures. Clear pieces are used to make faceted jewelry stones.

Healing Properties

Sunstone is an energizing stone that activates all of the chakras. Its positive energy is thought to attract romance, happiness, and success. Along the way, it also alleviates fear, encourages independence, and improves self-esteem. Wear it as jewelry for constant effects, use it for meditation for specific areas, or keep it in the home for balance and stability.

Optical Properties

Refractive Index
1.525-1.552
Birefringence
0.007-0.010
Pleochroism
Weak or absent
Optical Character
Biaxial negative

Discover Values

Rarity
4.1out of 5.0
82%
Popularity
3.9out of 5.0
78%
Beauty
4.4out of 5.0
88%
Cultural Value
4.0out of 5.0
80%
Collection Value
4.3out of 5.0
86%

Sunstone Market Value Calculator

Estimate the market value of Sunstone using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

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Sunstone Localities Map

See where Sunstone is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

The Meaning

Commonly associated with and named after the Sun, sunstone has been used by Vikings as a talisman on their journeys. According to Native American lore, this stone was formed on the place where a warrior was wounded - his blood fell on the rocks and a beautiful sunstone was created.

Associated Chakras

Sacral
Sacral
Solar Plexus
Solar Plexus

Key Characteristics

Characteristics of Sunstone

The optical effect appears to be due to reflections from inclusions of red copper, in the form of minute scales, which are hexagonal, rhombic, or irregular in shape, and are disposed parallel to the principal cleavage-plane. These inclusions give the stone an appearance something like that of aventurine, hence sunstone is known also as "aventurine-feldspar". The optical effect called schiller and the color in Oregon Sunstone is due to copper. The middle part of this crystal sparkles, and usually the color is darkest in the middle and becomes lighter toward the outer edges. The feldspar which usually displays the aventurine appearance is oligoclase, though the effect is sometimes seen in orthoclase: hence two kinds of sunstone are distinguished as "oligoclase sunstone" and "orthoclase sunstone".

More Images

Sunstone specimen 2
© Super DM
Sunstone specimen 3
© Astynax

Quick Facts

Physical Properties

Color
Orange, yellow, red, green, colorless, brown and copper shiller
Hardness (Mohs)
6 - 6.5
Density
2.64 - 2.66 g/cm³
Streak
white
Luster
Vitreous
Crystal System
Triclinic

Chemical Properties

Chemical Formula
(Ca, Na)(Al, Si)2Si2O8
Elements
Na, Al, Si, O, Ca

Also Known As

SunstoneHelioliteAventurine Orthoclase
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