Magnesiotaaffeite-2N'2S is one of the rarest gemstones in the world, often mistaken for spinel in the field due to its similar appearance. It typically forms as small, hexagonal, tabular crystals in metamorphic environments and is highly prized by collectors for its extreme rarity and hardness.
Is this magnesiotaaffeite-2n’2s?
5-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch magnesiotaaffeite-2n’2s with a known reference. Magnesiotaaffeite-2N’2S sits at Mohs 8-8.5, softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Streak: white.
- 3Read the lusterHold the specimen under a strong light. Luster: vitreous.
- 4Match the color rangeCompare against the expected color range: colorless, violet red, greenish, light green, pink violet.
- 5Look at form & habitCrystal system: hexagonal. Typical habit: tabular crystals, hexagonal prisms.
Often confused with
Magnesiotaaffeite-2N’2S vs. its common look-alikes, and how to tell them apart in the field.
Often found alongside magnesiotaaffeite-2n’2s
Minerals reported to co-occur with magnesiotaaffeite-2n’2s. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- Mg₃Al₈BeO₁₆
- Mohs hardness
- 8-8.5
- Density
- 3.6-3.613 g/cm³
- Colors
- Streak
- White
- Luster
- Vitreous
- Transparency
- Transparent
- Crystal system
- Hexagonal
- Crystal habit
- Tabular crystals, hexagonal prisms
- Cleavage
- None
- Rarity
- Rare
- Uses
- Gemstone, Collector
- Host rock
- Found in the gem gravels of Sri Lanka
Where rockhounds find magnesiotaaffeite-2n’2s
Classic worldwide localities
- Niriella Village, Ratnapura, Sri Lanka (type locality)
Field-hunting tip
Where it forms: Found in the gem gravels of Sri Lanka. If you start seeing spinel, chrysoberyl, fluorite in float, you are in the right ground. Typical habit: tabular crystals, hexagonal prisms. Train your eye for that shape before scanning the outcrop.
Common questions
How do you identify magnesiotaaffeite-2n’2s?+
Where is magnesiotaaffeite-2n’2s found?+
Is magnesiotaaffeite-2n’2s safe to handle?+
What rocks look like magnesiotaaffeite-2n’2s?+
What minerals are found with magnesiotaaffeite-2n’2s?+
What kind of rock does magnesiotaaffeite-2n’2s form in?+
What is magnesiotaaffeite-2n’2s used for?+
Find magnesiotaaffeite-2n’2s on the map
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