Natural Sapphire & Gemstone Buying Guides

How to Spot a Fake Sapphire — Glass, Synthetics, Doublets

Comment repérer un faux saphir - verre, synthétiques, doublets et ce qu'il faut surveiller

Comment repérer un faux saphir : verre, synthétique, doublets, diffusion de béryllium et espèces mal représentées - les tests à faire soi-même, quand un laboratoire est nécessaire, et les signaux d'alerte à surveiller lors de l'achat.

Plussur Comment repérer un faux saphir - verre, synthétiques, doublets et ce qu'il faut surveiller

Three-Stone Sapphire Rings — How to Choose the Center Stone, Side Stones, and Get the Proportions Right

How to design a three-stone sapphire ring: choosing the center stone by color, size, shape, and treatment, selecting diamond or sapphire side stones, getting the proportions and metal right, and the common mistakes to avoid.

Plussur Three-Stone Sapphire Rings — How to Choose the Center Stone, Side Stones, and Get the Proportions Right

Trending Sapphire Colors for 2026 — What's Hot, What's Rising, and Where the Value Is

The sapphire colors trending in 2026, from breakout teal and romantic peach to classic vivid blue, bold pink, underrated yellow, and collector-grade padparadscha — with pricing ranges and buying guidance for each.

Kashmir Sapphire — Mining, Availability, Premium Pricing, and the Investment Case

Kashmir sapphire's history and investment case: the 1881 discovery, why mining stopped, what makes its velvety cornflower-blue color unique, current availability and pricing, and an honest comparison against Ceylon origin.

Plussur Kashmir Sapphire — Mining, Availability, Premium Pricing, and the Investment Case

Madagascar Sapphire Mining — Ilakaka, the South Asian Connection, and How Stones Reach the Market

How Madagascar's sapphire deposits are mined and reach the market: the Ilakaka rush that changed the trade, the mining methods used, the Sri Lankan and Thai buyers who shaped the supply chain, and how rough travels from mine to cutting center.

Plussur Madagascar Sapphire Mining — Ilakaka, the South Asian Connection, and How Stones Reach the Market

Mining for Sapphires in Montana — America's Gem State and What It Produces

How sapphires are mined in Montana, America's gem state: the three main deposits — Rock Creek, Dry Cottonwood Creek, and the Missouri River — plus the legendary Yogo Gulch, the mining methods used, and what it means for buyers.

Plussur Mining for Sapphires in Montana — America's Gem State and What It Produces

Spinel — The Collector's Guide to the World's Most Undervalued Gemstone

The complete buyer's guide to spinel, one of the most undervalued fine gemstones: why it is almost never treated, its color range from red and cobalt blue to lavender, where it is mined, and how it compares to sapphire and ruby.

Plussur Spinel — The Collector's Guide to the World's Most Undervalued Gemstone

L'extraction de la tsavorite au Kenya et en Tanzanie - Comment le plus beau grenat vert au monde est extrait

Comment le grenat tsavorite est extrait au Kenya et en Tanzanie : l'histoire de la découverte par Campbell Bridges, l'emplacement des gisements commercialement importants, les méthodes d'extraction souterraine utilisées, et pourquoi cette pierre reste si rare.

Plussur L'extraction de la tsavorite au Kenya et en Tanzanie - Comment le plus beau grenat vert au monde est extrait

The Ratnapura Gem Market — How Sapphires Are Traded at the Source

Inside the Ratnapura gem market, where Sri Lankan sapphires are traded at the source: how a trading session works, what moves through the market from rough to finished stones, and how the supply chain reaches your ring.

Plussur The Ratnapura Gem Market — How Sapphires Are Traded at the Source

Madagascar Sapphire — The Modern Origin That Rivals Ceylon

Le saphir de Madagascar : qualité, prix et preuve d'origine

Madagascar est devenu depuis la fin des années 1990 l'une des premières origines mondiales du saphir, du bleu au changement de couleur. Cette page compare l'origine à Ceylan gisement par gisement, publie notre écart de prix et le désaccord d'une source parisienne à son sujet, et explique pourquoi le mot « Madagascar » sur une étiquette n'a aucune portée juridique en France.

Plussur Le saphir de Madagascar : qualité, prix et preuve d'origine

Montana Sapphire vs. Ceylon Sapphire — How America's Sapphire Compares to Sri Lanka's

Montana sapphire vs. Ceylon sapphire: how the two origins differ in size, color palette, treatment, price, and traceability — and which one fits your priorities for an engagement ring or collection piece.

Plussur Montana Sapphire vs. Ceylon Sapphire — How America's Sapphire Compares to Sri Lanka's

Sapphire vs. Spinel — The Overlooked Comparison Every Collector Should Understand

Sapphire vs. spinel: how the two gemstones compare on color range, hardness, treatment status, clarity, price, and market recognition — and which one suits a collector versus an everyday engagement ring buyer.

Plussur Sapphire vs. Spinel — The Overlooked Comparison Every Collector Should Understand

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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

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