Natural Sapphire & Gemstone Buying Guides

Blue Star Sapphire Price Guide — What They Cost and Why

What blue star sapphire costs per carat, what actually drives the price, and the one stone we hold — 8.09 ct with a GIA Sapphire Origin Report, $4,040.

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Tsavorite Garnet Price Guide — What They Cost and Why

Tsavorite garnet prices by carat weight, from the seven stones in our own stock — $1,177 to $22,724 — and what actually limits the supply of a large clean stone.

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Color-Change Sapphire Price Guide — What They Cost and Why

What color-change sapphire costs per carat, what actually drives the price, and the two stones we hold — 1.03 ct at $824 and 2.01 ct at $2,211.

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Is Cat's-Eye Chrysoberyl Good for an Engagement Ring?

Chrysoberyl is Mohs 8.5 — above quartz (7) and emerald (7.5–8), below corundum (9) and diamond (10). What that means for daily wear, setting choice, and care.

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Cat's Eye Chrysoberyl Price Guide — What They Cost and Why

What a genuine cat's-eye chrysoberyl actually costs, and what drives the price — with two stones currently in stock, at $3,792 and $9,482, priced out per carat.

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Star Sapphire vs. Regular Sapphire — What's the Difference?

Is a star sapphire a real sapphire? Yes — here's exactly what separates it from the faceted sapphires you're used to seeing, and which one actually suits you.

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Purple & Violet Star Sapphire — Price and Buying Guide

What purple and violet star sapphire cost per carat, what drives the price, and our two stones — 7.99 ct at $3,990 and 3.40 ct at $2,380, each with a GIA report.

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Pink Star Sapphire — Price and Buying Guide

What pink star sapphire costs per carat, what actually drives the price, and the one stone we hold — 3.26 ct with a GIA Sapphire Origin Report, $2,834.

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The Sapphire Buyer's Field Guide — Six Checks Before You Buy

A working field guide for buying natural sapphire: the five things that pretend to be sapphire, a ninety-second loupe check, the four treatments that change value, how to read a GIA report, and seven questions that expose a bad seller.

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The Ultimate Guide to Buying Natural Loose Sapphires

The definitive guide to buying a natural loose sapphire: colour, origin, treatment, cut, shape, certification, pricing, and engagement rings, with links to every Crescent Gems guide and collection.

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Custom Sapphire Rings — The Complete Guide to Designing Your Own

Everything that goes into a custom sapphire ring: the commissioning process, metal colour, protective settings for fancy shapes, side stones, and typical timelines and costs.

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Sapphires at Wholesale Prices

Crescent Gems sells natural Ceylon sapphires at wholesale prices to jewelers, designers, gem resellers, and jewelry manufacturers who can prove they are in the trade. Sourced directly in Sri Lanka and cut in our own factory, and trade pricing applied automatically once an account is verified.

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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

Actual photographs, hand videos and 360-degree views

14-day returns

GIA reports for significant gemstones

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

Natural Sapphire & Gemstone Buying Guides

Why Buy from Crescent Gems