Learn: Silver, Moissanite & Gemstone Guides

Every Zanvari piece is a considered purchase — most of our customers research for days before they buy. This page gathers every guide we have written: what moissanite actually is, how certification works, what the Urdu stone names mean, how to size a ring, and how to care for silver. Start with any question below.

Natural ruby and moissanite half-eternity band in sterling silver by Zanvari
GRA certified moissanite half-eternity band in 925 sterling silver by Zanvari
Handcrafted men's red aqeeq ring in 925 sterling silver by Zanvari
Men's figaro chain bracelet in 925 sterling silver by Zanvari

Silver & Care

What 925 means, why silver behaves the way it does, and how to keep it bright.

Men's 5mm matte band ring in sterling silver by Zanvari, shown for ring sizing

Sizing & Fit

Zanvari rings are sized by inner diameter in millimetres — one measurement gets it right.

Quick answers

Is moissanite a real diamond?

No — and it isn't sold as one. Moissanite is a real gemstone in its own right: lab-created silicon carbide, nearly as hard as diamond (9.25 on the Mohs scale) with even more brilliance, at a fraction of the price. Read the full moissanite vs diamond comparison.

Is 925 sterling silver real silver?

Yes. Sterling silver is 92.5% pure silver alloyed with 7.5% other metals for strength — the international standard for fine silver jewellery. The 925 hallmark is the mark of authenticity.

What is a GRA card?

GRA is a grading lab that specialises in moissanite — GIA, the diamond lab, does not grade moissanite at consumer scale, so the two serve different stones rather than competing on the same one. For natural gemstones, Zanvari uses GGI, a Karachi lab whose certificates can be verified online.

How do I find my ring size at home?

Zanvari rings are sized by inner diameter in millimetres (16–21MM). Measure a ring that already fits against a ruler, or use the printable chart in the ring size guide.

Why did my silver jewellery turn dark?

That is tarnish — a natural surface reaction between silver and moisture or perfume, not a fault in the metal. It polishes away. The silver care guide covers safe home methods and prevention.

How can I tell if a gemstone is original?

Certification you can verify beats any home test — every home check has counterfeits that pass it; a lab certificate with online verification does not. Our guides to spotting fake silver and checking yaqoot and aqeeq stones cover both.

Which finger should a ring be worn on?

Engagement and wedding rings are worn on the ring finger in Pakistan — left or right varies by family custom. In South Asian tradition, stone rings like aqeeq are often worn on the ring or little finger of the right hand; each stone's guide covers its own tradition.

Does Zanvari deliver cash on delivery?

Yes — cash on delivery is available across Pakistan, and every piece is made to order in our Karachi workshop. See Delivery & Shipping for timelines.