PJ Joseph

Welcome! I’m P.J. Joseph—a trained gemologist with over 40 years of experience in the fascinating world of gemstones. My journey blends scientific precision with storytelling, as I’ve spent decades educating others through writing. Whether you're a curious beginner or a seasoned collector, I’m here to share insights that empower ethical, informed choices in jewelry and gemology. I hold a professional diploma (DgemG) in gemology from the Deutsche Gemmologische Gesellschaft e.V., Idar-Oberstein, Germany, and the Gemological Institute of India, Mumbai, India.

The golden gopuram of Sree Padmanabhaswamy Temple in Thiruvananthapuram.

Padmanabhaswamy Temple Treasures: The World’s Richest Vaults

Gemstone History, Gold & Jewelry, Kerala Heritage /

Introduction The Sree Padmanabhaswamy Temple in Thiruvananthapuram, Kerala, stands as a beacon of devotion and staggering wealth. Dedicated to Lord Vishnu, it has amassed Padmanabhaswamy Temple Treasures over millennia through royal offerings and pilgrim gifts. In 2011, the world watched in awe as a Supreme Court order unveiled riches from five underground vaults, valued conservatively at over $22 billion. This […]

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Small scale laborers engaged in Panna Diamond Mining in India

Panna Diamond Mining: How Small-Scale Miners Find Fortune

Gemstone Sourcing, India, Mining & Origins /

Introduction India’s Panna district in Madhya Pradesh stands as one of the world’s few active sources of alluvial diamonds. Here, Panna Diamond Mining is not just an industry; it is a tradition where small-scale miners chase elusive gems through grit and hope. For centuries, these deposits have lured hopeful diggers. Unlike the massive commercial mines in Africa, Panna offers

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A gentleman examining loose colored gemstones with a loupe for business valuation.

Colored Stone Business: A Gentleman’s Guide to Thriving

Education, Gemology, Gemstone Business /

Introduction In the refined world of gemstones, the colored stone business represents a realm of artistry and opportunity far removed from the standardized precision of diamonds. Unlike diamonds, which follow fixed pricing charts (Rapaport), colored gems thrive in a boutique market where rarity, origin, and exquisite quality drive subjective values. However, success demands not just business acumen but a

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Deep red Byadgi chillies from Karnataka compared with rough Ruby gemstones.

Byadgi Chilli & Ruby: 100 Shades of Red – An Expert View

Food & Cuisine, Gemology, Karnataka /

Introduction Imagine a world where the earthy crimson of a dried Karnataka chilli dances alongside the fiery glow of a precious gemstone. That is the magic behind the phrase “one hundred shades of Byadgi chilli and ruby.” As a Gem Expert who also appreciates fine food, I often see parallels between the kitchen and the

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Colored stone grading showing hue tone saturation comparison in rubies sapphires and emeralds.

Colored Stone Grading: An Expert Guide

Colored Gemstones, Gemology, Gemstone Education /

Introduction to Colored Stone Grading Colored stone grading serves as a vital language in gemology, enabling buyers and sellers to communicate quality effectively. However, unlike the straightforward D-to-Z scale for diamonds, the world of colored gems lacks universality, linearity, and full objectivity. Instead, multiple systems from labs like GIA blend standardized terms with expert judgment, introducing nuance and

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South Indian temple jewelry with Lakshmi motif in 22K gold.

Temple Jewelry South India: Why This Ancient Style Still Rules

Gold Buying Guides, Jewelry, South Indian Culture /

Introduction Temple jewelry in South India captivates hearts across Tamil Nadu, Kerala, Andhra Pradesh, and Karnataka. For centuries, this exquisite adornment has blended spirituality, artistry, and heritage. Originally crafted solely for temple deities, it now graces brides, dancers, and modern fashionistas alike. However, a common question arises: Why does this ancient style remain so popular

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Synthetic gemstones for travel jewellery worn safely during vacation.

Synthetic Gemstones for Travel: An Expert Guide

Gemstones, Jewellery Buying Guide, Lab-Grown & Synthetic Stones, Travel & Lifestyle /

Introduction Synthetic gemstones for travel are becoming the smart choice for modern travellers. Imagine packing for your next trip—perhaps a family wedding in a bustling Tamil Nadu temple town or a relaxing vacation on a Kerala beach. You want to look elegant, but you are worried about carrying your heavy gold and diamond lockers. Consequently,

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Indian jewelry sales secrets demonstrated by a showroom salesperson

Indian Jewelry Sales Secrets: A Retailer’s Floor Guide

Gold & Jewellery Education, Jewelry Business, Retail Practices /

Introduction Indian jewelry sales secrets are not learned from manuals. There are no guarantees in life, but in the Indian jewelry trade, one thing is certain: Gold is not just fashion; it is family heritage. Selling jewelry in Kerala, Tamil Nadu, or Karnataka is different from selling in New York or London. Here, you are

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GIA origin report 2026 for Opal Peridot and Demantoid.

GIA Origin Reports 2026: Opal, Peridot & Demantoid

Gem News, Gemology, Jewellery /

Introduction GIA Origin Reports 2026 bring a major update to the gem industry. Starting January 1, 2026, the Gemological Institute of America (GIA) will begin origin-determination services for Opal, Peridot, and Demantoid Garnet. As a result, this expansion reshapes how buyers in Kerala, Tamil Nadu, and Karnataka evaluate gemstone value and authenticity. In addition, this

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Meen Peera Pattichathu showing its warm yellow-green tone that matches Peridot and other gemstones.

Kerala Green Palette Meen Peera Gemstones

Color Stories, Gemology, Kerala Food Culture, Kerala Heritage /

Introduction to Kerala Green Palette Meen Peera Gemstones Kerala green palette Meen Peera gemstones define Kerala. You see this warm yellow-green tone in rice fields, monsoon skies, and in gemstones passed across generations. Meen Peera Pattichathu shows this color naturally, linking to Peridot, Green Tourmaline, Jade, and other earthy stones. As someone who studies color

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