NEED TO KNOW: EXCLUSIVE GEMSTONE GUIDE
THE ART OF GEMOLOGY
Culture, Passion and Certification
Welcome to the educational hub of Pietre Preziose Online. Our mission is to guide you with transparency and expertise through the wonderful universe of ethical and certified natural gemstones.
Whether you are an experienced collector, searching for the perfect gift, or fascinated by gemological astrology, in this section you will find essential knowledge to appreciate the clarity, cut, and history of every rare stone.
The Three Pillars of Our Knowledge:
Explore our thematic guides below to discover the birthstone for your month of birth, the harmony of the stars, or the excellence of our display packaging.
EXPLORE OUR SPECIAL GUIDES
Click on the cards below to access each dedicated guide
01. BIRTHSTONES
Guide to the 12 Months of the Year
Every month of the year holds a unique lucky birthstone imbued with historical, energetic, and symbolic meanings.
From the deep red of January's Garnet to the crystalline blue of March's Aquamarine, to the royal elegance of July's Ruby and September's Sapphire: discover the ideal gemstone for every special occasion.
02. ZODIAC GEMSTONES
Gemological Astrology
An ancient connection ties the 12 Signs of the Zodiac to Earth's natural crystals.
Discover which gemstones attune perfectly with your astrological sign, enhancing personal magnetism, intuition, and emotional harmony in alignment with your ruling planets.
03. EXCLUSIVE PACKAGING
Security & 3D Suspension Case
The care and sophistication with which your precious gemstone is protected and delivered to your doorstep.
Every gem is safely enclosed inside an innovative 3D floating membrane case, sealed with a security hologram, and accompanied by an official gemological certificate of authenticity.
THE 4 Cs OF GEMSTONES
How Quality is Evaluated
1. Carat
Gemstone weight is measured in carats (1 carat = 0.20 grams). Rarity and value increase exponentially as mass grows.
2. Color
Saturation, tone, and purity of hue define the rarity of Emeralds, Rubies, Sapphires, and colored gemstones.
3. Clarity
The absence of internal inclusions visible under magnification yields crystalline brilliance and maximum light refraction.
4. Cut
Geometric proportions faceted by master cutters unlock inner fire and the natural sparkle of the stone.