Knowledge Center

How Rudraksha, gemstones, crystals and organic gems are tested and identified — written by the laboratory, for anyone who wants to understand what they own.

105 guides · updated regularly · RSS
All guides — page 6
Rudraksha

The Copper Coin Test: Tradition, Not Evidence

Placing a Rudraksha between two copper coins and watching it turn is a widely shared "authenticity" test. It demonstrates a bumpy surface and nothing else.

3 min
Gem Testing

The Four Cs for Coloured Stones: Why Colour Comes First

The four Cs work differently for coloured stones: colour dominates value, clarity is judged by species. How each is assessed and why grades are opinions.

4 min
Crystals

Sphatik (Clear Quartz): Testing Malas, Spheres and Shivlings

Sphatik malas, spheres and shivlings are the crystal articles most often replaced with glass. How a laboratory tests each form of clear quartz.

3 min
Care & Tradition

Cleaning and Maintaining a Rudraksha Mala

A Rudraksha is a dried seed and lasts for decades with simple care. How to clean, oil and store beads and malas, what damages them, and how often to do what.

3 min
Crystals

Citrine vs Heat-Treated Amethyst: What Most "Citrine" Actually Is

Most citrine on the market is heat-treated amethyst. How natural citrine and heated amethyst are told apart, and when the difference matters.

3 min
Navratna

Cat's Eye (Lehsunia): Chrysoberyl and the Stones That Imitate Its Eye

True cat's eye is chatoyant chrysoberyl. How it is separated from quartz, apatite and tourmaline cat's eye and from fibre-optic glass fakes.

3 min
Navratna

Blue Sapphire (Neelam): Identification, Heating and the Imitations to Know

How blue sapphire is confirmed as corundum, separated from synthetic spinel, glass, tanzanite and iolite, and examined for heating and diffusion treatment.

3 min
Crystals

Black Tourmaline (Schorl): Identification and Look-Alikes

Black tourmaline is cheap but still substituted with black glass, obsidian and onyx. How its weight, double refraction and striations identify it.

2 min
Rudraksha

Bhadraksha vs Rudraksha: The Look-Alike Bead Explained

Bhadraksha is a look-alike seed often sold as one- or two-mukhi Rudraksha. How the two differ in surface, shape and internal structure on X-ray.

3 min
Organic Gems

"Basra Pearl": What the Name Means and What Is Sold Under It

Basra pearls are natural Gulf pearls, now essentially unobtainable. Why the name is attached to cultured pearls and what a lab can actually confirm.

3 min
Rudraksha

Artificial Faces: How Extra Mukhi Are Carved and How Labs Catch It

Carving extra grooves into a common bead is the commonest Rudraksha fraud. What it looks like under magnification, and why the X-ray shows the true count.

4 min
Certification

Anatomy of a Test Report: What Every Line on the Card Means

Every line on a lab report card explained — report number, PIN, X-ray compartment count, RI, SG and conclusion — so you can read, check and match it.

4 min
Crystals

Amethyst: Natural, Synthetic and Glass

Purple quartz is imitated by glass and grown synthetically in bulk. How a lab separates natural amethyst, synthetic amethyst and purple glass.

3 min
Organic Gems

Amber vs Copal vs Plastic: Telling Fossil Resin from Its Imitations

Amber is fossil resin, copal is young resin, plastic is neither. The salt-water, UV, solvent and magnification checks that separate all three.

3 min
Care & Tradition

Why a Mala Has 108 Beads

Why japa malas have 108 beads: the astronomical, scriptural and mathematical explanations, how a mala is structured, and what a lab checks on one.

3 min
Not sure what you own?

The laboratory examines Rudraksha, gemstones, malas, bracelets and crystals and issues a numbered, PIN-protected report you can verify online at any time.