Gemstones and gem materials that start with K include K2 stone, Kambaba jasper, kammererite, kimberlite, kinoite, kornerupine, kunzite and kyanite.
This group includes rare faceted gems, patterned lapidary rocks, delicate collector minerals and a diamond-associated igneous rock.
Traditional meanings are symbolic associations rather than scientifically proven medical effects.
Continue from Gemstones That Start With J. For additional mineral context, explore Crystals That Start With K.
K Gemstones at a Glance
| Gemstone or material | Typical appearance | Material type | Common use |
|---|---|---|---|
| K2 Stone | Pale granite with vivid blue spots | Multi-mineral rock | Cabochons, beads and pendants |
| Kambaba Jasper | Dark green with black circular patterns | Commercial lapidary rock | Beads, carvings and cabochons |
| Kammererite | Pink, violet or reddish-purple crystals | Chromium-bearing clinochlore | Collector specimens |
| Kimberlite | Dark greenish-gray or brown rock | Igneous rock | Specimens and novelty jewelry |
| Kinoite | Bright blue crystals and coatings | Copper silicate mineral | Collector specimens and rare cabochons |
| Kornerupine | Green, brown, yellow or blue-green | Rare borosilicate gemstone | Faceted collector jewelry |
| Kunzite | Pale pink to violet-purple | Spodumene variety | Faceted rings, earrings and pendants |
| Kyanite | Blue, green, orange, black or white | Aluminum silicate mineral | Faceted gems and cabochons |
K2 Stone
K2 stone is a commercial name for pale granitic rock marked by vivid blue spots, commonly associated with azurite.
It is also sold as:
- K2 granite.
- K2 jasper.
- Raindrop azurite.
- Azurite in granite.
Despite one of its trade names, K2 stone is not traditional jasper.
It is traditionally associated with:
- Perspective.
- Resilience.
- Clear communication.
- Balanced thinking.
- Remaining composed during challenges.
K2 stone is usually cut into cabochons, beads and pendants.
Because it contains several minerals, hardness and chemical sensitivity vary within one piece. Copper-bearing blue areas may be more vulnerable to acids than the surrounding rock.
Kambaba Jasper
Kambaba jasper is a dark green decorative stone with black or deep green circular and swirling patterns.
It may also be sold as:
- Crocodile jasper.
- Green stromatolite jasper.
- Kambaba stone.
Kambaba jasper is traditionally associated with:
- Calm.
- Patience.
- Stability.
- Connection with nature.
- Gradual personal development.
It is commonly used for:
- Beads.
- Cabochons.
- Carvings.
- Pendants.
- Tumbled stones.
The commercial name can be used inconsistently, so color, pattern and seller disclosure should be evaluated carefully. Where to Buy Real Kambaba Jasper covers common purchasing concerns.
Kammererite
Kammererite is the traditional name for chromium-bearing clinochlore.
It commonly appears:
- Pink.
- Lavender.
- Violet.
- Reddish purple.
- As flaky plates or layered crystals.
Kammererite is traditionally associated with:
- Self-acceptance.
- Transformation.
- Emotional balance.
- Releasing harsh self-judgment.
- Recognizing personal strengths.
Its structure is related to the wider clinochlore family.
Kammererite is soft and splits readily along its layers. It is mainly a collector mineral rather than a practical jewelry gemstone.
Specimens should be kept away from water soaking, abrasion and pressure.
Kimberlite
Kimberlite is an igneous rock formed from magma that rose rapidly from deep within Earth.
Some kimberlite bodies carried diamonds toward the surface, but most kimberlite does not contain gem-quality diamond.
Kimberlite may appear:
- Dark gray.
- Greenish gray.
- Brown.
- Blue-gray when weathered.
- Coarse or brecciated.
It is traditionally associated with:
- Hidden potential.
- Persistence.
- Transformation under pressure.
- Recognizing value beneath an ordinary surface.
- Long-term development.
Kimberlite is a multi-mineral rock rather than one crystal. It may be used in novelty jewelry or kept as a geological specimen.
Its best-known associated gem is covered in the diamond guide.
Kinoite
Kinoite is a hydrous copper-calcium silicate mineral known for vivid blue crystals and coatings.
It may occur as:
- Small prismatic crystals.
- Bright blue crusts.
- Veins.
- Compact masses.
- Crystals on copper-rich matrix.
Kinoite is traditionally associated with:
- Communication.
- Insight.
- Emotional honesty.
- Calm expression.
- Recognizing connections between ideas.
It is mainly a collector mineral. Rare compact material may be polished, but crystal specimens are generally too delicate for exposed jewelry.
Because kinoite contains copper, avoid acids, prolonged soaking and use in drinking-water preparations.
Kornerupine
Kornerupine is an uncommon borosilicate gemstone.
Its colors include:
- Green.
- Yellow-green.
- Brown.
- Blue-green.
- Nearly colorless.
Some gem-quality kornerupine is strongly pleochroic and displays different colors from different viewing directions.
It is traditionally associated with:
- Individuality.
- Clear direction.
- Adaptability.
- Independent judgment.
- Recognizing personal priorities.
Transparent material may be faceted into collector rings, earrings and pendants.
Kornerupine can resemble tourmaline, peridot or other green gems, making laboratory testing useful for valuable stones.
Kunzite
Kunzite is the pink to violet-purple variety of spodumene.
Its shades range from:
- Nearly colorless pink.
- Pale blush.
- Lilac.
- Lavender.
- Strong violet-pink.
Kunzite is traditionally associated with:
- Affection.
- Emotional openness.
- Compassion.
- Gentle communication.
- Releasing emotional tension.
The gem is pleochroic and has two directions of perfect cleavage.
It may resemble morganite, but their composition, hardness and optical behavior differ. Kunzite vs. Morganite explains the key distinctions.
Kunzite can fade after prolonged exposure to intense light and should be stored away from sunny windows.
Kyanite
Kyanite is an aluminum silicate mineral known for elongated or bladed crystals.
Its colors include:
- Blue.
- Green.
- Orange.
- Black.
- Gray.
- White.
Kyanite is traditionally associated with:
- Communication.
- Alignment.
- Self-expression.
- Connecting values with actions.
- Resolving internal contradictions.
The mineral has different hardness readings depending on the direction tested and has prominent cleavage.
Transparent blue material may be faceted, while opaque and included stones are cut into cabochons or beads.
Blue kyanite may resemble sapphire in photographs. Kyanite vs. Sapphire compares their hardness, durability, luster and value.
Which K Gemstones Are Best for Jewelry?
The most practical options include:
- Kornerupine.
- Kunzite in protected settings.
- Kyanite in earrings or pendants.
- K2 stone.
- Kambaba jasper.
Better for Frequent or Regular Wear
Kornerupine generally offers the strongest combination of gem quality and durability within this group.
Kambaba jasper and K2 stone are practical for casual cabochons and beads when free from open fractures.
Better for Occasional Wear
Kunzite and kyanite require protection from cleavage-related impact.
Primarily Collector Materials
Kammererite and kinoite are generally too soft or delicate for normal jewelry.
Kimberlite is more important geologically than as a polished gemstone.
Care Guide for K Gemstones
- Keep K2 stone away from acids that could affect copper-bearing areas.
- Inspect Kambaba jasper for fractures and artificial color.
- Protect kammererite from abrasion and moisture.
- Treat kimberlite as a mixed rock with variable hardness.
- Keep kinoite dry and away from consumable liquids.
- Protect kornerupine from strong impacts.
- Store kunzite away from prolonged sunlight.
- Support kyanite blades so they cannot bend, split or strike harder stones.
- Avoid steam and ultrasonic cleaning when cleavage or inclusions create risk.
Kunzite and some colored minerals require controlled display. The guide to crystals that fade in sunlight covers common light-sensitive materials.
Frequently Asked Questions
What is the most valuable gemstone that starts with K?
Fine transparent kornerupine can be valuable because attractive facetable material is uncommon. Strongly colored kunzite can also command higher prices.
Which blue gemstones start with K?
Blue kyanite, kinoite and the blue areas in K2 stone are the main examples.
Which purple gemstones start with K?
Kunzite, kammererite and some kyanite crystals may appear purple or violet.
Is K2 stone a jasper?
No. It is a trade name for pale granitic rock containing blue azurite-like areas.
Is Kambaba jasper suitable for everyday jewelry?
It works well in beads, pendants and cabochons, although fractures and mixed mineral areas should be checked.
Does kimberlite always contain diamonds?
No. Most kimberlite does not contain economically valuable gem diamonds.
Is kunzite suitable for an engagement ring?
Its cleavage and light sensitivity make it less practical than sapphire, spinel or diamond for continuous daily wear.
Why does kyanite have two hardness values?
Its crystal structure provides different scratch resistance along different directions.
Continue the Gemstone Alphabet
Continue with Gemstones That Start With L, or browse all alphabetical guides through the Crystals 101 collection.
