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LILY DIA

Garnet Stone Guide

Jared James, co-founder of LILY DIA

By Jared James · Last updated 17 May 2026

Quick answer

Garnet is a family of related minerals that share a crystal structure but produce very different colours. Red almandine is the best known, but garnets also occur in vivid green tsavorite, raspberry rhodolite, electric orange spessartine and rare colour-change varieties. Hardness ranges from 6.5 to 7.5 depending on variety.

What garnet is

Garnet is a group name covering almandine (deep red), pyrope (fiery red), spessartine (orange), grossular (colourless to green, including tsavorite), andradite (green to black, including demantoid) and uvarovite (emerald green). Many gem garnets are blends of two or more species. Garnets are usually untreated, which is unusual for coloured stones.

Colour and look

Red garnet runs from deep wine to bright cherry. Rhodolite shows raspberry pink to purplish red. Tsavorite is vivid emerald green with strong life. Demantoid is a bright yellow-green to green with the highest dispersion of any natural gem, even more than diamond. Mandarin garnet is electric orange. Colour-change garnets shift between blue-green and red-purple.

Hardness and durability

Almandine and tsavorite are 7 to 7.5 on the Mohs scale with good toughness. Rhodolite and pyrope are similar. Demantoid is softer at 6.5 and needs gentler handling. All garnets are suitable for jewellery with reasonable care. Tsavorite is hard enough for an engagement ring centre stone.

What to look for

Colour and clarity are the main drivers. Tsavorite and demantoid carry premium prices for their vivid greens. Rhodolite is judged on raspberry saturation. Mandarin garnet on pure orange. Most red garnets are very affordable, so quality is judged more on saturation and cut than rarity.

Treatments and origins

Garnets are usually untreated, which is a real advantage in a market full of heat-treated stones. Tsavorite comes from East Africa (Kenya, Tanzania). Demantoid from Russia and Namibia. Rhodolite from Sri Lanka, Brazil and East Africa. Mandarin spessartine from Nigeria and Mozambique. Almandine from India, Sri Lanka and Brazil.

Best uses

Tsavorite makes an excellent emerald-look engagement ring without the brittleness. Mandarin garnet stands out as a cocktail ring or earring stone. Rhodolite is great for everyday pendants. Demantoid is collector-grade with rare fire, best in earrings or careful rings. Red garnet stud earrings are a classic.

Care

Clean with warm soapy water and a soft brush. Ultrasonic cleaning is generally fine for most garnets, though demantoid is better cleaned by hand because of its lower hardness. Store separately from diamond and sapphire.

Price

Almandine and rhodolite are among the most affordable fine coloured stones. Mandarin garnet sits in the middle. Tsavorite has risen in price and now sits close to fine emerald per carat for top stones. Demantoid is the most expensive garnet, especially Russian material with horsetail inclusions.

Designing a custom ring

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Other gemstones to compare

  1. #01

    Ruby

    Ruby is the red variety of corundum, the same mineral as sapphire.

  2. #02

    Spinel

    Spinel is one of the most undervalued fine gemstones.

  3. #03

    Tourmaline

    Tourmaline occurs in more colours than any other gemstone, from pink rubellite to blue indicolite to the electric blue-green Paraiba variety.

Frequently asked questions

Is garnet only red?
No. Garnet is a mineral group that produces green tsavorite, orange spessartine, raspberry rhodolite, demantoid and rare colour-change varieties as well as the familiar red.
Is tsavorite a good emerald alternative?
Yes. Tsavorite gives a vivid green colour with better hardness and toughness than emerald and is usually untreated. It is rarer than emerald at the top end but more affordable in commercial sizes.
Are garnets treated?
Most garnets are untreated, which is one of their strongest points. That makes a quality stone easier to assess and reduces ongoing care concerns.
Is garnet durable enough for daily wear?
Most garnets at 7 to 7.5 Mohs hardness are durable enough for everyday rings. Demantoid at 6.5 needs more care.

Still deciding

Talk through garnet with us

Send what you have in mind, even if that is only a colour, a budget and a piece of jewellery type, and we will help you compare options.

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