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Ametrine top view cut
Colored Stone Cut Quality: What to Look For

Part 5 of 5 in the series “Value Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond)” explores craftsmanship’s bearing on cut quality.

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Tourmalines
Factors in Colored Stones that Interact to Affect Value

Part 4 of 5 in the series "Value Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond)" digs deeper into cutters’ choices and explores additional factors used in the trade to assess relative value.

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Kunzite top and side view
Colored Stone Darkness & Brightness

Part 3 of 5 in the series “Value Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond)” examines how cutting decisions can have a profound effect on a gemstone’s color quality.

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Firefighter Memorial
Gem Cutting Styles - Definitions

Part 2 of 5 in the series “Value Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond)” establishes a common language for discussing cutting styles, with a focus on basic faceting styles, and offers a short discussion on cabochons and beads.

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Colored Gemstone Value Factors

Part 1 of 5 in the series "Value Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond)" discusses the major value factors that affect the price of a colored gemstone.

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Summer 2018 G&G: Diamonds Across the Spectrum, Byzantine Garnet, and Sapphires from Yogo Gulch

A summary of the Summer 2018 issue of Gems & Gemology.

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