The emeralds we have are natural, untreated, Grade A
Each Emerald has an independent certificate.
The emeralds are in our Office in Coimbra-Portugal if you would like to schedule a visit.
Emeralds are precious gemstones known for their rich green color, primarily composed of beryllium aluminum silicate (BeAlSiO) with traces of chromium and vanadium giving them their distinct hue.
Key Properties:
Color: Deep green to bluish-green
Hardness: 7.5-8 on the Mohs scale
Transparency: Transparent to opaque
Luster: Vitreous (glassy)
Formation: Found in hydrothermal veins and pegmatites, often in association with quartz and feldspar.
Common Applications:
Jewelry- Used in rings, necklaces, earrings, and bracelets as a luxury gemstone.
Collectors & Investments -High-quality emeralds are valuable and sought after as investment pieces.
Industrial Use - Synthetic emeralds are used in optical instruments and lasers.
Spiritual & Healing Beliefs - Some believe emeralds bring luck, wisdom, and emotional balance.
Product Grades:
Emeralds are graded based on color, clarity, cut, and carat weight (the "Four Cs"):
AAA Grade (Gem-Quality) -Deep green, high clarity, few inclusions, very valuable.
AA Grade - Slightly lighter green with minor inclusions, still premium quality.
A Grade â?? More visible inclusions, slightly lower saturation but still used in fine jewelry.
B/C Grade -Noticeable inclusions, lighter or uneven color, often used in lower-end jewelry.
Industrial Grade -Synthetic or heavily included stones, used in optical applications and lasers.
Price per Carat/Ton:
Emerald pricing varies significantly based on quality and origin:
Low-Quality (Industrial): $10â??$100 per carat
Mid-Quality (Commercial): $100-$1,000 per carat
High-Quality (Gem-Grade): $1,000-$100,000+ per carat (Colombian, Zambian, or Brazilian origin)
For bulk purchases (by ton), raw emerald ore or lower-grade material is priced differently, depending on clarity, color, and market demand. Would you like assistance in finding specific suppliers or current market rates?
Magnesium silicate has a trade name of Talc. It possesses lubricating properties, high luster and sheen. The colour of the material varies from the pure white to silvery white. It is one of the softest mineral and has a soapy feel.
Talc (Soapstone/Steatite) is a naturally occurring mineral primarily composed of magnesium, silicon, and oxygen and also referred to as Magnesium Silicate Powder. It is known for its softness, chemical inertness, and ability to absorb moisture, making it highly useful across various industrial applications. It is available in white powder with the particle size range of 40 to 10 microns.
DoloTalc is a blend of Talc and Dolomite in a rock. At Silver Stone Industries, we have developed multiple grades for Dolo Talc, catering to diverse industry requirements. It is white in color and possess a perfect blend of characteristics of both Talc and Dolomite.
