Jewellery
Stones, metal and mechanism — grading, hallmarks, treatment disclosures and what to spend where.
Allocation and Order for an Engagement Ring: Loose Stone, Setting, Brand Premium and Custom Lead Time
A workable plan with a 5-3-2 budget split, loose-stone priority and custom lead-time pitfalls.
Earrings and Face Shape: Studs, Threads, Hoops and Tassels, Plus Weight and Back Material
By face shape we split the four earring types, stud, thread, hoop, tassel, and cover weight limits and hypoallergenic back points.
Necklace Length and Neckline: How 40, 45, 60 and 80 cm Meet Round, V and Turtleneck
Using five lengths, 40, 45, 50, 60, 80 cm, against round, V, turtleneck and more, a formula you can follow directly.
Gemstone Treatment and Reading the Report: Heat, Filling, Dye and What the Certificate Says
Line by line through the GIA, GRS and NGTC treatment boxes, the line between enhancement and treatment and the value effect.
Stacking Bracelets and Bangles: Width Ratio, Material Mix and Wear Noise
From graduated width and material compatibility to wear-noise control, the layering rules and comfort edge of the wrist.
Entering Coloured Gemstones: Colour Grading, Origin and Treatment for Ruby, Sapphire and Emerald
From the three benchmark colours, pigeon's blood, royal blue and Muzo green, to origin premiums and heat and oil treatment, a starter map of coloured stones.
Measuring Ring Size: How Finger and Hand Shape Set Band Width and Centre-Stone Ratio
From a string measure of finger circumference to matching finger and hand shape with band width and stone size, a self-measure decision chain.
Entering Mechanical Watches: Movements, Rate Tolerance, Power Reserve and Service Cycle
From automatic and manual movements, the COSC daily-rate standard, to the 3 to 5 year oil service, the starter facts for new watch buyers.
Daily Jewellery Don'ts: Invisible Harm from Sport, Housework, Chemicals and Hot Springs
By scene, sport, housework, chemicals, hot springs, the wear don'ts and the science, so your jewellery lasts.
Reading Pearls: Lustre, Roundness, Blemishes, Nacre and the Four Origins Compared
We break down the five-axis grading of pearls and set Akoya, South Sea, Tahitian and freshwater diameters and price bands side by side.
Why Silver Turns Black: The Chemistry, and Cleaning and Care for 925, Thai and Rhodium-Plated
From the mechanism of silver sulphide to the differences among 925, Thai silver and rhodium plate, a workable plan to clean and slow the blackening.
Beyond the 4Cs: How Cut Proportions, Fluorescence and the Lab Report Build Real Sparkle
Step past carat, colour and clarity. We break down table percentage, crown angle, pavilion depth, fluorescence grades and the real differences between GIA, IGI and NGTC to explain where fire actually comes from.
Gold Purity and Craft: Where Solid, K-Gold, 3D Hard Gold and Ancient-Method Gold Part Ways
From fineness stamps and hardness figures to per-gram versus fixed-price accounting, we draw the real boundaries between four kinds of gold jewellery and what they actually hold.
Jewellery Storage, Cleaning and Insurance: Divided Anti-Oxidation, Home Valuation and Policy Points
From divided anti-oxidation storage and per-material cleaning to policy valuation updates, a closed-loop plan for jewellery as an asset.