💎 Ratan Mandir • Gemstone Education Guide
Fake vs Original Gemstone — Complete Stone-by-Stone Guide
Blue Sapphire • Yellow Sapphire • Ruby • Emerald • Pearl • Coral
Home tests, lab certificate guide, red flags & buyer checklist for every major gemstone. India 2026.
🔵 Blue Sapphire
🟡 Yellow Sapphire
🔴 Ruby
🟢 Emerald
⚪ Pearl
🟠 Red Coral
👉 Shop Certified Natural Gemstones
Section 01
4 Common Types of Fake Gemstones (All Stones)
🔬 Synthetic / Lab-Created
Same chemical structure as natural but lab-grown. No natural geological formation involved.
🧪 Glass / Plastic Imitation
Colored glass or plastic shaped to mimic a gemstone. Most common and cheapest fraud.
🔧 Composite / Filled Stones
Pieces joined together or cracks filled with glass to make the stone appear cleaner.
🎨 Dyed / Color-Coated Stones
Low-quality stone artificially colored with dye or coating. Color fades with time — very common in Emerald and Pearl.
Section 02
Stone-by-Stone Identification Guide
🔵 Blue Sapphire (Neelam) — How to Identify?
Saturn Gemstone | Origin: Sri Lanka, Africa, Burma | Hardness: 9 (Mohs)
✅ Signs of a Real Blue Sapphire
- Mohs hardness 9 — cannot be scratched by glass
- Natural color zoning visible — one side slightly deeper
- Silk-like needle inclusions visible under mobile zoom
- Feels cool to touch initially
- Royal Blue / Cornflower Blue — too-perfect uniform color = suspect synthetic
🚨 Signs of a Fake Blue Sapphire
- Round gas bubbles under zoom = glass confirmed
- Perfectly uniform color, no zoning = synthetic
- Very light weight = plastic imitation
- Price below ₹500-1000/carat = almost certainly fake
- No origin certificate, only verbal "Ceylon" claim
Most common fakes: Blue Glass and Blue Synthetic Corundum. Certificate must clearly state "Natural Corundum" with verified origin.
🟡 Yellow Sapphire (Pukhraj) — How to Identify?
Jupiter Gemstone | Origin: Sri Lanka, Nigeria, Madagascar | Hardness: 9 (Mohs)
✅ Signs of a Real Yellow Sapphire
- Mohs hardness 9 — glass or nail cannot scratch it
- Bright lemon yellow to golden yellow color
- Natural feather or fingerprint inclusions under zoom
- Heavier than glass of same size
- Certificate says "Natural Corundum, Yellow"
🚨 Signs of a Fake Yellow Sapphire
- Yellow glass or Citrine (quartz) sold as Pukhraj — very common
- Too bright neon yellow = dyed or synthetic
- Very light weight = glass imitation
- Round bubbles under zoom = glass confirmed
- Price below ₹300-800/carat = almost certainly fake
Citrine (quartz) being sold as Yellow Sapphire is one of the most common frauds. A simple hardness test reveals it immediately — Citrine is significantly softer.
🔴 Ruby (Manik) — How to Identify?
Sun Gemstone | Origin: Burma, Mozambique, Sri Lanka | Hardness: 9 (Mohs)
✅ Signs of a Real Ruby
- Deep pigeon blood red — very different from plastic red
- Mohs hardness 9 — nothing common can scratch it
- Strong red fluorescence under UV light (natural Burmese ruby)
- Silk-like rutile needle inclusions under zoom
- Slight color zoning is normal — too perfect = synthetic
🚨 Signs of a Fake Ruby
- Red glass, red spinel, red garnet — three common substitutes
- Glass-filled ruby — fractures hidden with red glass (very common)
- Neon bright red = synthetic flame fusion ruby
- No UV fluorescence = low quality or fake
- Price below ₹500-2000/carat = almost certainly treated/fake
Glass filling in Ruby is extremely common. Certificate must clearly state "No indications of glass filling". This is the single most important line to check in a Ruby certificate.
🟢 Emerald (Panna) — How to Identify?
Mercury Gemstone | Origin: Colombia, Zambia, Brazil | Hardness: 7.5–8 (Mohs)
✅ Signs of a Real Emerald
- Natural inclusions called "jardin" (garden) are always present
- Too clean = synthetic or glass — natural inclusions are a good sign
- Deep green with slight bluish tint — not grassy bright green
- Minor oil treatment is acceptable and common
- Zambian = slightly bluish; Colombian = pure vivid green
🚨 Signs of a Fake Emerald
- Green glass — round bubbles visible under zoom
- Synthetic hydrothermal emerald — too perfect, zero inclusions
- Green tourmaline sold as emerald
- Heavily oiled stone — looks clean but full of hidden fractures
- Neon grass green = dyed or synthetic
"Jardin" (natural inclusions) in emerald is a quality indicator, not a defect. A completely flawless emerald is almost always synthetic. Certificate should say "Minor Oil" — "Heavy Filler" is a red flag.
⚪ Pearl (Moti) — How to Identify?
Moon Gemstone | Origin: Basra (Iraq), South Sea, Japan | Natural vs Cultured
✅ Signs of a Real Pearl
- Rub against teeth — real pearl feels slightly gritty
- Feels cool initially, slowly warms to body temperature
- Orient (rainbow-like luster) visible on surface
- Shape is not perfectly round — slight irregularity is normal
- Weight heavier than plastic or glass imitation
🚨 Signs of a Fake Pearl
- Feels perfectly smooth against teeth = plastic or glass imitation
- Perfectly round = suspicious (could be high-quality cultured)
- Coating peeling near drill hole = coated imitation
- No luster or orient = fake or very low quality
- Extremely light weight = plastic confirmed
Natural Basra Pearl and Cultured Pearl are both real pearls — but very different in value. GIA certificate clearly states "Natural Pearl" vs "Cultured Pearl". Always verify this before buying.
🟠 Red Coral (Moonga) — How to Identify?
Mars Gemstone | Origin: Italy (Mediterranean), Japan | Organic Stone
✅ Signs of Real Red Coral
- Visible white spots or grain lines (natural growth pattern)
- Feels cool to touch initially
- Matte finish — not shiny like plastic
- Moderate weight — heavier than plastic, slightly lighter than glass
- Italian (Mediterranean) coral is most premium — origin on certificate
🚨 Signs of a Fake Red Coral
- Plastic coral — too uniform, too bright, very light weight
- Dyed bone or shell — looks similar but no grain pattern
- Glass coral — round bubbles under zoom
- No grain or texture pattern = almost certainly fake
- Two pieces with identical shape and color = plastic copy
Red Coral is an organic stone — every piece is naturally different. Identical shape and color in two pieces is a strong sign of plastic imitation. Certificate must state "Natural Coral" with clear origin.
Section 03
5 General Home Tests (Works for All Stones)
🔍 Bubbles & Zoom Check
Zoom 2-3x on phone camera. Round bubbles = glass fake. Natural stones show organic inclusions.
⚖️ Weight Feel
Natural stones feel denser and heavier. Plastic is very light, glass is medium weight.
🌡️ Temperature Test
Natural stone feels cool initially and slowly warms. Plastic warms up almost immediately.
🎨 Color Check
Too-perfect uniform color = suspicious. Natural stones always have slight color variation.
🧲 Hardness Test (Use Carefully!)
Sapphire & Ruby (Mohs 9) — glass cannot scratch them. Do NOT do this on Emerald or Pearl — they are softer and can be damaged.
Section 04
How to Read a Lab Certificate (IGI / GIA)
| Check Point |
✅ Green Flag (Genuine) |
🚨 Red Flag (Suspicious) |
| Lab Name |
IGI, GIA, GRS, GII |
Unknown local lab |
| Stone Type |
"Natural Sapphire / Ruby / Emerald" |
"Synthetic" / "Imitation" |
| Origin |
Sri Lanka / Burma / Colombia |
"Origin not specified" |
| Treatment |
Heated / Unheated / Minor Oil |
Blank / Heavy Filling / Glass |
| Verification |
Certificate verifiable online |
No online record found |
Section 05
6 Instant Red Flags — Save This Before Shopping
🚨 Clear Warning Signs of a Fake Gemstone:
-
Price too good to be true — 70-80% below market rate.
-
"Energized / Blessed" focus with zero quality details.
- High-pressure selling — "Buy now or face bad luck".
- Vague origin — "foreign stone", "imported" with no specifics.
- No return or exchange policy.
- No basic tools (loupe, light, scale) in shop.
Section 06
10 Questions to Ask Any Seller Before Buying
📋 Ask These Directly to the Seller:
- Is this a natural stone or lab-created/synthetic?
- What is the exact origin? (Sri Lanka / Africa / Burma / Colombia?)
- Which lab certificate will I receive?
- What is the treatment? Heated / Unheated / Glass-filled / Oiled?
- What is the return / exchange window?
- What is the price per carat?
- Can I verify the certificate number online?
- Can you share close-up photos showing inclusions?
- What if an independent lab finds it fake?
- What is the approximate market rate for this quality?
Section 07
🏔️ Direct from Mines to You — The Ratan Mandir Difference
Direct Mines Sourcing = Best Price + Zero Fraud Risk
Ratan Mandir sources every gemstone directly from verified mine suppliers — eliminating 4-5 middlemen and their markups. This means:
⛏️ Direct from Mines
Verified suppliers from Sri Lanka, Africa, Burma and Colombia. No long supply chain.
💰 Wholesale Pricing
Mines rate passed directly to you. Zero brand premium, zero astrologer markup.
🧪 100% Certified
IGI/GIA certified + origin proof + treatment disclosure on every stone. Fake = 0%.
Real Example: Thai Blue Sapphire (3 Carat)
Local Astrologer: ₹25,000 | Brand Website: ₹14,000 | Ratan Mandir (Mines Rate): ₹5,500
Section 08
Ratan Mandir — 4 Promises We Stand By
Every genuine buyer deserves a natural, certified, fairly priced stone — without the fear of being cheated.
🧪 IGI / GIA Certified
Every stone comes with a genuine lab report. Verify the certificate number online anytime.
📍 Origin Proof
Sri Lanka, Africa, Burma, Colombia — clearly mentioned on every product page.
🔥 Treatment Disclosure
Heated / Unheated / Oiled — always stated clearly. Nothing hidden, ever.
✅ No Risk Guarantee
Independent lab finds it fake? Full refund + free return shipping. Zero questions asked.
Compare 2-3 sellers first. Use this knowledge. If our mines-direct + full transparency approach earns your trust, then explore us.
