Natural Sapphire & Gemstone Buying Guides

Sapphire vs. Tanzanite — Two Blue Gemstones, Very Different Stones

Sapphire vs. tanzanite for an engagement ring or fine jewelry: how they compare on color, durability, rarity, value retention, and what each buyer is actually getting. An honest comparison from a dealer who sources directly.

Sapphire Halo Ring Guide — How to Choose the Center Stone, Halo, and Get the Proportions Right

Sapphire halo engagement rings: how a halo affects apparent size, color, and budget, how to choose the right center stone for a halo setting, halo width and diamond size decisions, metal choices, single vs. double halo, and what to pay for a complete halo ring in 2026.

Emerald Cut Sapphire — The Complete Guide to the Step Cut That Shows Everything

Emerald cut sapphires: what step faceting does to color and clarity, why the emerald cut demands higher quality rough, how to evaluate a well-cut emerald sapphire, which colors work best, how it compares to oval and cushion, settings, and 2026 pricing by color and carat weight.

Cushion Cut Sapphire — The Complete Guide to the Vintage Shape That Deepens Color

Cushion cut sapphires: what makes the shape distinct, how rounded corners concentrate color differently from oval and round, the difference between crushed ice and chunky cushion faceting, how to evaluate cut quality, which colors work best, settings, and 2026 pricing by color and carat weight.

Oval Sapphire — The Complete Guide to the Most Popular Sapphire Cut

Oval sapphire: why it is the most popular sapphire shape, how to evaluate length-to-width ratio, avoid the bowtie effect, assess cut quality without a GIA cut grade, choose the right size for an engagement ring, and what to pay by color and carat weight.

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.

How to Commission a Custom Ring — From Loose Stone to Finished Piece

How to commission a custom sapphire ring from a loose stone: choosing your stone first, finding the right jeweler — local, online, or through Crescent Gems' own jewelry division — selecting metal, and designing the setting from concept to finished piece.

What Size Sapphire Is Best for an Engagement Ring? Carat Weight, Millimeters, and How to Choose

What size sapphire is best for an engagement ring: carat vs. millimeter explained, why sapphire looks smaller than diamond per carat, shape-by-size tables, finger size guidance, band width effects, size vs. color trade-offs, and price benchmarks.

Is a Round Sapphire Good for an Engagement Ring? Cut, Color, and What to Know Before You Buy

Is a round sapphire good for an engagement ring? How the round cut affects sparkle, color, and face-up size in sapphire, where it outperforms other shapes and where it falls short, and who it suits best.

How to Care for a Sapphire Engagement Ring: Cleaning, Storage, and What to Avoid

How to care for a sapphire engagement ring: the right cleaning method, ultrasonic and steam cleaning guidance, what chemicals and activities to avoid, storage rules, professional maintenance schedule, and care by setting type.

Blue Sapphire Engagement Ring Guide: What Every Buyer Should Know Before Purchasing

Blue sapphire engagement ring guide: what every buyer should know before purchasing — color grading, origin, heat treatment, GIA documentation, size and cut selection, setting styles, and how to get the most for your budget.

Sapphire vs Diamond Engagement Rings: The Real Differences, and How to Choose the Right Sapphire

Sapphire vs. diamond engagement rings: how they compare on sparkle, durability, color, and price, which type of buyer each suits, and how to choose the right sapphire if you go that route.

Previous 1 2 3 Next

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

Try Before You Buy

Join our ever growing group of satisfied customers from around the world.

Natural Sapphire & Gemstone Buying Guides

Why Buy from Crescent Gems