Purple gemstones have fascinated people for centuries with their regal colours and distinctive beauty. Often associated with royalty, creativity, spirituality, and wisdom, purple gemstones range from the timeless appeal of amethyst to the exceptional rarity of sugilite and charoite.
While many purple gemstones may appear similar at first glance, they differ significantly in terms of rarity, durability, value, and composition. This guide explores some of the most popular purple gemstones used in jewellery today.
Amethyst
Amethyst is the purple variety of quartz and is one of the most widely recognised coloured gemstones in the world. It has been treasured since ancient times and remains highly popular due to its attractive colour and accessibility.
Colour: Pale lilac to deep royal purple
Hardness: 7 on the Mohs scale
Best for: Rings, pendants, earrings, bracelets, and fashion jewellery
Key Characteristics
- Widely available and affordable
- Good durability for jewellery use
- Birthstone for February
- Often cut into a variety of shapes and sizes
Purple Sapphire
Purple sapphire is a durable and elegant variety of corundum prized for its unique colour. It is less common than blue sapphire but has gained popularity among collectors and jewellery enthusiasts.
Colour: Light violet to rich purple
Hardness: 9 on the Mohs scale
Best for: Rings, pendants, bracelets, and heirloom jewellery
Key Characteristics
- Excellent durability for everyday wear
- One of the traditional precious gemstones
- Available in a range of purple shades
- May undergo heat treatment to improve appearance
Tanzanite
Tanzanite is a rare gemstone found almost exclusively in Tanzania. Although often described as blue violet, many fine specimens display strong purple tones that make them highly desirable.
Colour: Violet blue to purplish violet
Hardness: 6 to 7 on the Mohs scale
Best for: Earrings, pendants, and occasional wear rings
Key Characteristics
- Limited geographic source
- Displays pleochroism, showing different colours from different angles
- Increasingly valued by collectors
- Commonly heat treated to improve colour
Iolite
Iolite is known for its striking pleochroism and attractive violet blue appearance. It has long been appreciated as an affordable alternative to sapphire and tanzanite.
Colour: Violet to bluish violet
Hardness: 7 to 7.5 on the Mohs scale
Best for: Earrings, pendants, and occasional wear rings
Key Characteristics
- Distinctive colour changing appearance
- Relatively affordable
- Attractive transparency in fine specimens
- Requires careful setting in jewellery
Purple Spinel
Purple spinel is a beautiful yet lesser known gemstone valued for its brilliance, durability, and natural beauty.
Colour: Pinkish purple to rich violet purple
Hardness: 8 on the Mohs scale
Best for: Rings, earrings, pendants, and fine jewellery
Key Characteristics
- Excellent brilliance and transparency
- Good durability for regular wear
- Often untreated
- Increasingly popular among collectors
Charoite
Charoite is a distinctive ornamental gemstone known for its swirling patterns and vivid purple colour. It is found primarily in Siberia, Russia.
Colour: Lavender purple to deep violet
Hardness: 5 to 6 on the Mohs scale
Best for: Pendants, beads, carvings, and statement jewellery
Key Characteristics
- Unique fibrous and swirling appearance
- Limited geographic occurrence
- Popular in artistic jewellery designs
- Primarily used as a decorative gemstone
Sugilite
Sugilite is a rare gemstone admired for its intense purple colour. High quality material is particularly sought after by collectors.
Colour: Reddish purple to deep violet purple
Hardness: 5.5 to 6.5 on the Mohs scale
Best for: Cabochons, collector jewellery, and ornamental pieces
Key Characteristics
- Rare and highly collectible
- Attractive, saturated colour
- Often cut as cabochons
- Limited availability in fine quality
| Comparison of Popular Purple Gemstones | |||
| Gemstone | Colour | Hardness | Suitable for Daily Wear |
| Amethyst | Pale lilac to deep royal purple | 7 | With care |
| Purple Sapphire | Light violet to rich purple | 9 | Yes |
| Tanzanite | Violet blue to purplish violet | 6 to 7 | With care |
| Iolite | Violet to bluish violet | 7 to 7.5 | With care |
| Purple Spinel | Pinkish purple to rich violet purple | 8 | Yes |
| Charoite | Lavender purple to deep violet | 5 to 6 | Occasional wear |
| Sugilite | Reddish purple to deep violet purple | 5.5 to 6.5 | Occasional wear |
How to Choose a Purple Gemstone
When selecting a purple gemstone, consider the following factors:
Colour
Colour is often the most important value factor. Rich, evenly distributed colour is generally preferred, although lighter lavender tones are also appreciated in certain gemstones.
Durability
Harder gemstones such as purple sapphire and purple spinel are better suited for jewellery intended for everyday wear. Softer gemstones may require additional care.
Rarity
Some purple gemstones, such as sugilite and fine charoite, are less commonly encountered and may appeal more to collectors.
Budget
Purple gemstones are available across a broad range of price points, from affordable amethyst to rarer gemstones such as purple sapphire and sugilite.
Certification
Independent gemstone testing can provide valuable information about a gemstone’s identity and characteristics.
Why IDT Gemstone Certification Matters
Many purple gemstones can appear remarkably similar to the naked eye. In some cases, gemstones may also undergo treatments to enhance their appearance. Professional gemstone testing helps provide greater transparency about the stone being purchased.
IDT Gemstone Certification helps identify important characteristics, including:
- The identity of the gemstone
- Whether the gemstone is natural or laboratory grown, where applicable
- The presence of detectable treatments
- Weight and measurements
- Colour and transparency observations
- Additional comments relevant to the gemstone
Whether purchasing an amethyst, purple sapphire, tanzanite, iolite, purple spinel, or another purple gemstone, IDT Gemstone Certification provides an independent assessment to help buyers better understand the gemstone they own or intend to purchase.
Purple gemstones remain some of the most admired coloured stones in the world. From the enduring appeal of amethyst to the rarity of sugilite, each gemstone offers its own unique beauty and characteristics.
Before purchasing a valuable purple gemstone, understanding its identity, durability, and characteristics can help you make a more informed decision. Always insist on IDT Gemstone Certification for greater transparency and confidence.
