Tanzanite Stone Buying Guide – Complete Information for First-Time Buyers
What is Tanzanite?
Tanzanite is a rare and beautiful gemstone that comes in shades of deep blue and violet. It was discovered only in the 1960s near Mount Kilimanjaro in Tanzania, Africa. This gemstone is famous for its eye-catching colour, rarity, and elegance.
Tanzanite is said to be 1,000 times rarer than diamonds—found in only one place on Earth!

Why is Tanzanite Special?
- Found only in Tanzania (nowhere else in the world)
- Unique dual colour – Blue and Violet seen together
- Symbol of luxury, elegance, and uniqueness
- Often gifted for 24th wedding anniversaries or special milestones
Things to Check Before Buying Tanzanite
1. Colour – The Most Important Factor
Tanzanite shows three colours (called “trichroism”)—blue, violet, and burgundy. But usually, you’ll see two major shades: blue and violet.
- Top Quality: Deep blue with violet hints (looks like sapphire)
- Medium Quality: More violet or lighter blue
- Low Quality: Pale, washed-out look (usually cheaper)
Important: A stone that looks vivid blue indoors and violet in sunlight is a natural Tanzanite characteristic.
2. Cut – Brilliance and Shape
Cutting improves the sparkle and shows the best colour. A badly cut stone may look dull, even if it’s high quality.
Popular Tanzanite Cuts:
- Oval: Maximizes colour; elegant for rings or pendants
- Round: Classic and very shiny
- Cushion: Soft square with rounded edges; looks vintage
- Emerald: Big table (top surface), suitable for showcasing clarity
- Pear: Tear-drop shape, good for earrings and pendants
Tip: Make sure the cut is symmetrical and does not have chips or dull areas.
3. Clarity – Free from Flaws
Tanzanite stones naturally have minor inclusions (internal marks). These affect beauty and price.
Grades of Clarity:
- Eye-Clean: No marks visible without a magnifying lens
- Slightly Included: Small marks visible only under light or lens
- Included: Marks visible with naked eye; affects shine and durability
Tip: Avoid buying stones with cracks or cloudy areas—they may break easily.
4. Carat – Weight and Size
Tanzanite is available from small sizes (0.5 carat) to large collector pieces (20+ carats).
Size | Ideal For |
---|---|
0.5 – 2 ct | Studs, small rings |
2 – 5 ct | Daily wear pendants, rings |
5 – 10 ct | Statement jewellery |
10+ ct | High-value investment |
Note: Price per carat increases with size AND colour depth.
5. Origin – Authentic Tanzanite from Tanzania
All real Tanzanite comes from a small area in Merelani Hills, Tanzania. If a seller offers Tanzanite from any other country—be cautious.
Always ask for an ISO Certified Lab Report that confirms its Tanzanian origin.
6. Treatment – Natural vs. Heated
Most Tanzanite available in the market is heat-treated. This is normal and accepted worldwide.
- Heat-Treated Tanzanite: Common, safe, enhances blue/violet colour.
- Untreated (Natural) Tanzanite: Rare, slightly more expensive.
Trick: If a seller is offering a “natural” stone at a very low price, it may be synthetic.
7. Price Guide (India Specific)
Tanzanite prices depend on size, colour, clarity, and certification.
Quality Level | Price (Approx. per carat) |
---|---|
Top (Deep Blue) | ₹4,000 – ₹7,000 |
Medium (Blue-Violet) | ₹2,500 – ₹4,000 |
Light / Included | ₹1,000 – ₹2,500 |
GST + Making Charges apply if mounted in jewellery.
8. Certification – Don’t Buy Without It!
Always buy a Tanzanite that comes with an ISO Certified Lab Report. This report confirms:
- It’s a real, natural Tanzanite
- The weight (carat)
- Colour and clarity grades
- Cut style
- Whether it’s treated
At Ratna Gems, we provide this report with lifetime authenticity guarantee for every Tanzanite stone.
9. Best Jewellery Options for Tanzanite
- Engagement Rings: Modern alternative to diamond
- Pendants & Necklaces: Looks stunning with white or yellow gold
- Bracelets: For those who love statement pieces
- Earrings: Small tanzanites offer rich colour at affordable prices
10. How to Take Care of Your Tanzanite
- Avoid harsh cleaners like bleach or acids
- Remove before gym, bath, or heavy work
- Clean gently with lukewarm water and soft cloth
- Store separately in a soft pouch or cloth box
Where to Buy?
Look for sellers who offer:
- ISO Certified Lab Reports
- Clear Return Policy
- Real photographs (not edited or stock images)
- Reviews and customer support
At Ratna Gems, we:
- Source Tanzanite directly from Tanzania
- Offer only natural, certified gemstones
- Provide full transparency on pricing and grading
- Give easy return options as per our policy
Frequently Asked Questions (FAQs)
Final Thoughts
Tanzanite is a gemstone that speaks of class, elegance, and rarity. With only one source in the world, owning a Tanzanite is like owning a piece of Earth’s rarest treasures.
If you’re planning to buy a Tanzanite stone, remember:
- Focus on colour, clarity, and certification
- Avoid deals that seem too cheap to be real
- Always ask for an ISO Certified Lab Report
- Buy from trusted sources like Ratna Gems
Explore Our Certified Tanzanite Collection
Visit Ratna Gems Tanzanite Collection and shop online with confidence.
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