Choosing amethyst: find the purple you want to wear

Editorial draft. Sources checked 2 October 2026.

Which purple would you like to wear?

Would you rather wear a pale lilac accent or a stronger purple? Start your amethyst search with a few examples of the colour you enjoy. Leave room to change your mind when you see actual candidates. These references give you words for your preference before you encounter the seller's quality labels. If a listing looks appealing, note what you like about it so you have something specific to compare.

Purple has a range

Amethyst is the purple variety of quartz. Its colour ranges from light lilac to strong purple, with bluish or reddish appearances. Crystals can show darker and lighter zones. It has Mohs hardness 7 and is the February birthstone. These facts identify the gem, but do not establish the quality of an individual example. GIA amethyst overview, GIA amethyst description.

Use the label as a question

GIA notes that there is no standard amethyst grading scale behind seller terms such as AAA. Much faceted material has no internal features, called inclusions, visible without magnification, and larger stones do not generally carry a dramatic per-carat premium. Colour and cutting remain important to judging the actual gem rather than its label. GIA amethyst buying guidance.

Ask the seller to show the difference

If two listings have different letter grades, ask what observable feature puts one in the higher category. Can the seller show the comparison using the same lighting and scale? A useful answer lets you connect the label to something you can see. The gemstone-quality guide offers broader buying questions; our colour-and-lighting guide helps keep the comparison fair.

Check an attractive colour carefully

Strong purple or reddish purple without obvious darker or lighter patches when viewed from above is highly valued. A stone that is too dark may appear black in dim light. Heat can lighten some dark amethyst; dye and occasional fracture filling also occur. GIA's quality guide therefore supports asking both about appearance and about any treatment. GIA amethyst quality factors.

Keep preference separate from proof

You might prefer a softer purple even when another example has qualities the trade values more highly. Keep that preference in your notes. Alongside it, record what the seller says about colour, cut, clarity and treatment. This lets you explain why you like a stone while checking what you are buying. The treatment-disclosure guide helps you follow up on vague descriptions such as “enhanced” or “improved”.

Consider years of wear

Amethyst has good resistance to breaking, called toughness, and can be used in rings with precautions against scratching. Heat, sudden temperature changes and prolonged intense light can cause damage or affect some colour. Warm water and soap provide a safe cleaning method for the gem. Steam is not recommended; ultrasonic cleaning is unsuitable for dyed or fracture-filled examples. GIA care.

Finish with the particular piece

Before choosing a cleaning routine, ask about the selected stone's condition and treatment, then ask about the setting, metal and any plating. The mixed-gem cleaning guide helps you prepare if the design contains other materials. Return to your colour notes, too. Can you describe why you prefer this amethyst and what the seller's grade means for it? Ask for clarification wherever a letter label is still doing more work than the actual description.