RICHPIECE
Fine jewelry, luxury watches, and the guides and calculators behind every treasured piece.
From valuing your gold and silver and pricing a diamond to converting ring sizes, estimating a gemstone's carats, and decoding karat purity, RichPiece pairs free hands-on jewelry calculators with practical guides and a richly illustrated museum. Buy smarter, treasure longer.
Jewelry Tools & Calculators
Free tools for fine jewelry and precious metals — gold value calculator, silver value calculator, diamond price calculator, ring size converter, gemstone weight calculator, and gold karat & purity calculator.
Gold Value Calculator
Estimate the intrinsic melt value of any gold item from its weight, karat, and the live spot price — in grams, troy ounces, pennyweight, or kilograms
Silver Value Calculator
Estimate the melt value of coins, flatware, or jewelry from their weight, fineness (999, 925 sterling, 900, or 800), and the current silver spot price
Diamond Price Calculator
Estimate a diamond's price from its carat weight and price per carat — pick a 4Cs quality-tier preset or paste your own dealer figure for a precise result
Ring Size Converter
Turn a finger measurement in millimetres into US, UK/AU, and EU (ISO) ring sizes — enter the inner diameter or circumference and see every scale at once
Gemstone Weight Calculator
Estimate the carat weight of a mounted or loose stone from its length, width, and depth, its specific gravity, and its cut — no need to unmount or weigh it
Gold Karat & Purity Calculator
Convert gold karat to purity percentage and millesimal fineness, or reverse a purity percentage back to karat — instant, exact answers from 10k to 24k
Gems & Jewelry Museum
Wander an immersive museum of fine jewelry — the precious gemstones from diamond to emerald, the gold, platinum, and silver that hold them, the rings, necklaces, and crown jewels crafted from them, and the luxury watches and timepieces of horology, each in its own gallery, so you can get to know the stories behind every treasured piece: how each one is made, what makes it precious, and the craft behind fine jewelry.
Tour the museum →From the Journal
Fresh guides on gemstones and precious metals, diamonds and karats, fine jewelry and custom design, and luxury watches, plus practical tips for buying, valuing, and caring for every treasured piece.
The Timeless Elegance of High-End Watches: A Journey Through Craftsmanship and Heritage
The Timeless Elegance of High-End Watches: A Journey Through Craftsmanship and Heritage In an era dominated by digital clocks and smartwatches, high-end watches stand as enduring symbols of prestige, artistry,…
The Timeless Allure of Gold Accessories: Elevating Style Through Lustrous Detail
The Timeless Allure of Gold Accessories: Elevating Style Through Lustrous Detail In an era where fashion trends evolve rapidly, gold accessories stand as enduring symbols of elegance and sophistication. These…
The Pinnacle of Elegance: Unveiling the World of Elite Fashion Accessories
The Pinnacle of Elegance: Unveiling the World of Elite Fashion Accessories In an era where personal expression is as vital as ever, elite fashion accessories have transcended mere ornamentation to…
The Timeless Legacy: Uncovering the Stories Behind Historical Artifacts
The Timeless Legacy: Uncovering the Stories Behind Historical Artifacts In every corner of our world, remnants of ancient civilizations whisper tales of their existence through objects that have endured centuries….
The Timeless Allure of Investment-Grade Jewelry: A Legacy Beyond Value
The Timeless Allure of Investment-Grade Jewelry: A Legacy Beyond Value In an era where financial markets fluctuate unpredictably, many affluent individuals are turning their attention toward tangible assets that offer…
The Alchemy of Opulence: Unveiling the World of Luxury Fashion
The Alchemy of Opulence: Unveiling the World of Luxury Fashion In an era where fast fashion dominates wardrobes and trends shift faster than seasons, luxury fashion stands as a beacon…
Keep Learning
Practical know-how on gemstones, precious metals, jewelry design, and watches, plain-language explainers on the 4Cs, karats, hallmarks, and horology, and tips for first-time buyers and seasoned collectors alike — everything you need to dig deeper and buy with confidence.
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