A practical toolkit for curious minds
Online tools, calculators and guides
GemsMakers is a directory of focused online calculators, checkers, planners and guides. Browse resources for jewelry, gemstones, metals, watches, construction, cars, fitness, games and other practical topics.
Useful tools, organized around what you need to do
Explore the collection
Start with a topic or search the full tool directory.
Popular categories
Specialized tools
FIND STONE DATA
GEM RARITY METER (1000+ STONES)
CAB SIZE CALCULATOR
Rare Stone Worth Finder
Reveal My Style Archetype
Spinel Fire & Value Tool
Apple Watch Size Finder
Bangle Stacker
Banglecalc
Beadlength
Beadpattern
Beadsize
Bezeltimer
Blog
Books
Bracelet fit
Braceletsizer
Brooch Pin
Catseye
Chainhollow
Chainstrengthcalculator
Chainweight
Charger matcher
Chokerkisslength
Chokerupdown
Cubandrapelength
Cubanwidthengine
Decisionfriction
Diamond Shape Matcher
Diamondscore
Diamondsparkling
Diamondsprices
Diamondtennisbracelet
Diamondweight
Ear Stack Map
Earring Designer
Earringarchitect
Earringviz
Emerald Grade Calculator
Engagement Ring Planner
Engrave
Gem Margin Engine
Gemclarity
Gemcolor
Gemdecision
Gemhardness
Gemstonerisk
Gemvisual
Gemweight
Goldchainweight
Goldenlab
Goldlab
Goldpurity
Goldpuritycheck
Grillz
Grillzpreview
Hallmark
Handviz
Hoopmetalmatcher
Hoopscalereality
Hoopweightpain
Jewelry Digital Certificate
Jewelry Green Score
Jewelry Insurance
Jewelry Oxidation
Jewelry Wear Cost Per Day
Keeper finder
Mixed Metal Analyzer
Natural vs Lab Grown Checker
Necklaceviz
Nosehugtension
Noseringmigration
Opal Authenticity Checker 💎
Overheat
Pearls
Permanentvsclasp
Portfolio
Pricecalc
Prices
Raytracer
Real emerald or fake emerald checker 💎
Ring calculator
Ringfit
Ringsizer
Rolexrealitychecker
Ruby Colour Price Estimation
Ruby Weight Optimizer
Ruby X-Ray
Scrapgold
Seiko mods
Shop
Silverringweight
Solder
Solitaireillusion
Solitaireundertonepicker
Springbarsizer
Stacking Architect
Stone To Settings
Strapviz
Stressmap
Truth
Watch Comparator
Watch Mixed Metal
Watchcustomstudio
Watchdecoder
Watchgmt
Watchlume
Watchmoon
Watchmovement
Watchsweep
Watchtracker
Watchtype
Watchviz
Waterproof Jewelry
Waterresistance
Waxtometalcalculator
White Gold Wear Estimator
Cars
Calm Play
Coins & Collectibles
Luxury
Pearls
Meteorites
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Tools for practical tasks and specialist interests
GemsMakers brings together focused online tools to help you calculate, compare, plan, check and explore. Browse by topic or search for a tool by name.
From jewelry and gemstone resources to practical calculators, trackers, games and guides, each directory link takes you to its dedicated page.