Visible assumptions
No hidden score and no false precision.
The pearl desk · open edition
Five useful, beautiful tools for the questions people ask before they buy, inherit, compare or write about jewellery.
Explore the toolsChoose your question
Each tool shows its assumptions, keeps uncertainty visible and points to physical inspection when a screen cannot settle the answer.
Calibrate your screen and compare pearls from 5 to 20 mm.
Open the tool → 02 · 2 min $ Transparent estimatorExplore the seven factors specialists use to discuss value.
Open the tool → 03 · 3 min ✓ Safe observation checklistReview non-destructive clues without scraping or burning.
Open the tool → 04 · 45 sec ◉ Interactive colour atlasCombine body colour and overtone to find precise language.
Open the tool → 05 · 1 min ○ Four sizing systemsCompare US, UK, ISO/EU and Japanese ring sizes.
Open the tool →A quieter kind of calculator
No hidden score and no false precision.
GIA terminology and ISO measurement principles.
No registration, email wall or payment required.
Made to travel
Every tool includes responsive embed code for publishers, educators and jewellers. The visible branded credit links to its permanent page on The South Sea Pearl.
See an embed example