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Sapphire Rough
Sapphire Value, Price, and Jewelry Information

Everything you ever wanted to know about sapphire gems. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.

Are Serengeti Rubies Real Rubies?

Although Tanzania is a source of rubies, so-called Serengeti rubies are more likely to be garnets. Learn more about rubies and misleading gem names here.

What Is The Best Lap For Polishing Sapphire?

Polishing sapphire gemstones can be tough on laps. Learn the pros and cons of different laps and some techniques to save time and money.

Tips For Polishing Synthetic Corundum

Polishing synthetic corundum without leaving pits requires certain techniques and tools. Get expert lapidary advice here.

What Were The Gemstones Of The Breastplate of Aaron?

In Exodus, the breastplate of Aaron was said to hold 12 gems. However, the gemological identities of the stones, like jacinth and sapphire, are debatable.

How To Orient Sapphires With Silk Inclusions

Silk inclusions in sapphires are hard to detect. Learn to pick the best orientation and cut for these gems. You might end up with a prize star sapphire.

What Is The Best Synthetic Corundum?

Rubies and sapphires can be made in a lab. The process that yields the best synthetic corundum for faceting should give you the best return for your work.

How To Find Curved Striae In Synthetic Ruby And Sapphire

Curved striae or lines are a telltale sign of synthetic ruby and sapphire. If you're having trouble seeing them, here are some helpful tips.

Star Gemstones: Tips For Beginners

Want to start cutting beautiful star gemstones? Here are some helpful gemological resources for novice lapidaries and jewelers.

What Are The Best Rough Sapphire Stones?

Where do the best rough sapphire stones come from? It depends on the color. Blue may be the most valued color, but these gems pose problems for faceting.

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