Natural Sapphire & Gemstone Buying Guides

The Full Range of Natural Ceylon Sapphires at Crescent Gems — Every Color and Cut Explained

The full range of natural Ceylon sapphires at Crescent Gems: every color from blue and teal to yellow and star, every cut from oval to emerald, and how to navigate the catalog by color, treatment, and cut to find the right stone.

Why Crescent Gems Prices Loose Gemstones Below Retail

How Crescent Gems Prices Loose Gemstones — Fair Prices, Direct From Source

Crescent Gems sets its prices from what a stone cost us and what it costs us to operate: we buy in Sri Lanka ourselves, cut a large share of our stones in our own facility, and carry no showroom. This article sets out that structure in full, says plainly why we publish no percentage against other sellers’ prices, and shows how to check a stone’s treatment, origin and documentation for yourself.

River Bed Mining for Gemstones in Sri Lanka: How Active Waterways Yield Ceylon's Rarest Stones

River bed mining for gemstones in Sri Lanka: the geology behind why rivers concentrate gems by density, the five-step hand extraction method, the key river districts, what is recovered from the gravels, how river rough compares with pit-mined rough, and a sourced account of the licensing and environmental picture.

How to Buy Natural Sapphires Online: What to Check, What to Avoid, and What Certification Actually Tells You

Buying natural sapphires online is entirely viable when you know what to verify, what documentation actually protects you, and which patterns signal a problem. This guide covers the five essential pre-purchase verification steps, a 7-point red flag list, a platform comparison, how to evaluate color quality from photographs, and a 9-point pre-purchase checklist.

Pit Mining Gemstones in Sri Lanka: How Ceylon Sapphires Are Extracted, and Why the Method Matters

How traditional pit mining works in Sri Lanka: sinking the shaft, reading the gem-bearing illama layer, how a pit is shared between landowner, licence holder and miners, and what the NGJA licence actually requires afterwards — cited to GIA, the Sri Lanka Export Development Board and the NGJA.

Faceting Sapphires ~ The Process

How a rough sapphire becomes a finished gem: the faceting process step by step, the optics behind light performance, key terminology, essential tools, and how to evaluate cut quality before you buy.

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Choosing a gemstone for an engagement ring or important piece of jewellery is a deeply personal decision. It is often a meaningful purchase made only a few times in a lifetime, so trust, accurate information and expert guidance matter. Crescent Gems combines more than 25 years of gemstone experience with direct sourcing, careful cutting and transparent treatment disclosure to help you choose with confidence

Natural, earth-mined gemstones only

Direct sourcing from leading mining regions

No synthetic, flux-filled or beryllium-diffused stones

In-house cutting and recutting

FREE Shipping within USA and Low rates for international orders.

Actual photographs, hand videos and 360-degree views

14-day returns

Free US return shipping

GIA reports for significant gemstones

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Natural Sapphire & Gemstone Buying Guides

Why Buy from Crescent Gems