Is Your Chandrakant Real? Telling Moonstone From Its Fakes

Walk through any gem bazaar in Pakistan and you will find moonstone on sale, often under the name chandrakant. A good share of it is not moonstone. The usual substitute is a man-made glass called opalite, whose glow looks very convincing in a shop window. Others are milky quartz, chalcedony, plastic, or a different feldspar sold under the moonstone name.

The encouraging part is that real moonstone's glow behaves in a very particular way, and a few careful checks at home will catch most imitations. Below we go through those checks, what they cannot prove, where a lab comes in, and how to buy without guessing.

What genuine moonstone is

Moonstone is a feldspar built from extremely thin, alternating layers of two slightly different feldspars. Light entering the stone gets scattered by those layers, producing a soft, floating sheen called adularescence. It is a bluish or white glow that seems to sit just under the surface and glides across the stone as you tilt it.

Most real moonstone is colourless to milky white, sometimes grey, peach, brownish or greenish. It is about 6 to 6.5 on the Mohs scale and has two directions of cleavage, so a sharp blow can split it along flat planes. Inside you will often see small inclusions that look like tiny insects or stress cracks, which the trade calls "centipedes". These natural marks are reassuring, not a defect.

The usual imitations

Opalite glass

Opalite is a man-made glass, sometimes sold as "sea opal", "tiffany stone" or just moonstone. It is very even and very clean. Against a dark background it glows milky blue; with light passing through from behind it glows warm orange or yellow. That orange back-glow gives it away, because real moonstone does not turn orange when backlit like that.

Milky quartz and chalcedony

Cloudy quartz and blue-white chalcedony can pass for moonstone in photos. Their glow, if they have one, is even and still: tilt them and nothing moves. Chalcedony also tends to look waxy instead of having moonstone's glassy, slightly silky shine.

Plastic and resin

The cheap cabochons in costume jewellery are often resin. They feel warm and light, and may show mould lines or tiny bubbles. Plastic also scratches easily with a pin; that is a test you can try on a piece you do not care about, never on a stone you plan to keep.

Rainbow moonstone

"Rainbow moonstone" is the trade name for a white variety of labradorite, a close feldspar cousin, that flashes blue and other colours. It is natural, it is attractive, and it is not a fake. It is not classic moonstone either, strictly speaking, and should be described and priced as what it is. If you like the flash, read our guide to reading labradorite's flash and see the labradorite category.

Checks you can do at home

None of these proves anything on its own. Together they catch most imitations.

1. Tilt it. Hold the stone under one light, like a phone torch or a window, and tilt it slowly. In real moonstone the glow drifts across the dome like a soft cloud and is strongest from one direction. In glass and quartz it usually stays put or looks the same from every angle.
2. Backlight it. In a dark room, shine a torch through the stone from behind. Opalite turns a clear orange or gold. Moonstone looks grey, colourless or faintly bluish, with its natural inclusions showing.
3. Use a loupe. Under 10x, round gas bubbles or swirl marks point to glass or resin. Real moonstone shows small natural inclusions and sometimes straight, flat cleavage cracks.
4. Be suspicious of perfection. A big, flawless, evenly glowing stone at a low price is the opalite pattern. Natural moonstone with fine clarity and a strong blue sheen is uncommon and never cheap.
5. Feel the temperature. Stone feels cooler than plastic and warms more slowly in your hand. That separates plastic from stone, but glass feels cool too, so it will not catch opalite.

If you have never used a loupe or torch this way, our general guide to checking any gemstone before you buy walks you through it.

Where a lab is needed

Some questions cannot be settled at home. A gem lab measures refractive index and specific gravity, which put moonstone in a narrow band that most glass and quartz fall outside. It can also confirm whether a stone is moonstone or a related feldspar like labradorite, detect coatings, and identify glass made to look natural. For a larger or finer moonstone, or one priced on a strong blue sheen, testing is worth it.

If you want an independent report on a moonstone from us, let us know before you order. Our guide to reading a lab certificate explains what each line on the report means.

Treatments and enhancements

Most moonstone is untreated, which is exactly why the treatments that do appear are worth knowing:

• Coatings. A thin surface film can boost the apparent sheen or add colour. It may wear away at the edges over time.
• Dark backing. In closed-back jewellery, dark foil or paint behind the stone can make a weak sheen look stronger. Ask whether a set stone has a closed back, and why.
• Dyeing. Some coloured moonstones, and many "moonstone" beads, are dyed. Colour gathered in cracks is the sign.
• Fracture filling. Occasionally used on lower grades to hide cracks that reach the surface.

None of these is fraud when it is disclosed. The problem comes when the stone is sold as untreated.

Coloured moonstone: genuine shades and doubtful ones

Natural moonstone is not only white. Peach, grey, champagne and light brown moonstones are genuine and often carry a silvery sheen instead of blue. Black or very dark grey moonstone exists too. Be careful with a strong, saturated colour, such as bright pink, deep blue or green, in a stone that otherwise looks like moonstone. Those colours more often come from dye, a coating or glass. Ask whether the colour is natural, look under a loupe for colour pooled in cracks, and judge the sheen with the tilt test exactly as you would for a white stone.

Moonstone, opal and the other milky stones

Some buyers mix up moonstone with opal or pearl, since all three have a soft inner light. Opal shows patches of spectral colour that change sharply as you move it, called play-of-colour; moonstone has a single soft sheen. Pearl has no inner sheen at all, only surface lustre. If you see little flashes of red, green and orange, the stone is more likely opal; see our opal real or fake guide. Moonstone shares the June birthstone place with pearl, and our post on choosing between them compares the two.

Buying moonstone safely in Pakistan

Here is a sensible way to go about it:

• Ask the seller straight out: "Is this natural moonstone, and has it been coated, dyed or backed?" Get the answer in writing.
• Ask for a video of the exact stone tilted under one light, and a second clip with a torch behind it. Real moonstone passes both on camera.
• Make sure the weight is for the loose stone, in carats, or in ratti with the type of ratti stated. The standard gemstone ratti is 0.91 carat; the sunari ratti some jewellers use is about 0.61 carat. The carat to ratti converter helps.
• Choose a seller who lets you inspect before you pay and offers a return period.

Every stone in our listings is photographed on its own. A 10.65 carat chandrakant and a 14.75 carat chandrakant show what natural sheen looks like in a photo, and the full range is in the moonstone category. If you want to understand pricing first, our moonstone price guide covers what drives the cost.

Caring for it once you know it is real

Because of its cleavage, moonstone can crack from a sharp knock, and grit can dull its polish. Clean it with lukewarm water, mild soap and a soft brush, and keep it away from ultrasonic cleaners and steam. Store it apart from harder stones. Our moonstone care guide goes into detail. For a ring worn every day, a bezel setting protects the edges better than claws.

Chandrakant in tradition

Vedic tradition links moonstone with the Moon, and many families here choose it for calm and for those born under Cancer. These are customs and beliefs, not promises, and they only apply to a genuine stone, which is one more reason to check before you buy.

Buying with a safety net

Every moonstone at Authentic Gems is natural, any known treatment is stated, and each stone is priced on its own. We confirm orders by phone or WhatsApp and dispatch within 1 working day by insured, tracked courier. In Karachi, including PECHS, Tariq Road, Saddar and Bahria Town Karachi, parcels usually arrive in 1 to 2 working days; Lahore, Islamabad and the other major cities usually take 2 to 4, and smaller towns up to about 7. Delivery is a flat Rs. 500 per order. Pay by Cash on Delivery after opening the parcel and checking the stone, and return it within 7 days if it does not match the listing. Questions about a particular stone? Message us on WhatsApp or email hello@authenticgems.pk.

Shop the stones: moonstone.

The beliefs described here are traditions, shared for interest. They are not guaranteed outcomes, religious rulings or medical advice.