Natural Sapphire & Gemstone Buying Guides

Blue Star Sapphire Price Guide — What They Cost and Why

Blue is the classic star sapphire color — here's what genuine blue star sapphire costs by star sharpness and body color, priced against a current 8.09ct GIA example.

もっと読むBlue Star Sapphire Price Guide — What They Cost and Whyについて

Tsavorite Garnet Price Guide — What They Cost and Why

Real tsavorite garnet prices by quality tier and carat weight, from 8 current in-stock stones ranging $1,177 to $22,724, plus how it compares to emerald.

もっと読むTsavorite Garnet Price Guide — What They Cost and Whyについて

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

What a genuine color-change sapphire costs by shift strength and origin, priced against two current in-stock stones from $824 to $2,211.

もっと読むColor-Change Sapphire Price Guide — What They Cost and Whyについて

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

Chrysoberyl is Mohs 8.5 — the third-hardest gemstone after diamond and corundum. Here's what that means for daily wear, setting choice, and long-term care.

もっと読むIs Cat's-Eye Chrysoberyl Good for an Engagement Ring?について

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

What a genuine cat's-eye chrysoberyl actually costs by eye quality and body color, with real current stock examples from $3,792 to $9,482.

もっと読むCat's Eye Chrysoberyl Price Guide — What They Cost and Whyについて

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.

もっと読むStar Sapphire vs. Regular Sapphire — What's the Difference?について

Purple & Violet Star Sapphire — Price and Buying Guide

What drives purple and violet star sapphire prices, how the two colors differ, and real GIA-backed pricing from current in-stock stones.

もっと読むPurple & Violet Star Sapphire — Price and Buying Guideについて

Pink Star Sapphire — Price and Buying Guide

Real prices, real asterism science, and how to tell a genuine pink star sapphire from a purple one — with current in-stock examples and GIA-backed pricing.

もっと読むPink Star Sapphire — Price and Buying Guideについて

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.

もっと読むThe Sapphire Buyer's Field Guide — Six Checks Before You Buyについて

The Ultimate Guide to Buying Natural Loose Sapphires

サファイアの選び方完全ガイド｜色・産地・非加熱・鑑別書で失敗しない買い方

日本語のサファイア記事は、そのほとんどが「売るときいくらになるか」を書いた買取店のページです。このガイドは逆に、これから買う人のために書きました。スリランカのラトゥナプラで石を買い付け、自社で研磨している立場から、色・透明度・カット・カラット・処理・産地の順に、判断の材料を整理しています。

もっと読むサファイアの選び方完全ガイド｜色・産地・非加熱・鑑別書で失敗しない買い方について

Custom Sapphire Rings — The Complete Guide to Designing Your Own

Everything that goes into a custom sapphire ring: choosing the stone first, the commissioning process, metal colour, protective settings for fancy shapes, side stones, and typical timelines and costs — with links to every detailed Crescent Gems guide.

もっと読むCustom Sapphire Rings — The Complete Guide to Designing Your Ownについて

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, with generous discounts for verified trade accounts.

もっと読むSapphires at Wholesale Pricesについて

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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

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