検証できる事実、視覚的な判断、追加検査が必要な事項を区別するためのガイドです。
アンティーククッション・ダイヤモンド図鑑
アンティーククッションとオールドマインカットの輪郭、比率、ファセットの個性を比較できます。
Read the guideDiamond knowledge
アンティークダイヤモンド・ガイド
鑑定書、コンディション、オールドマインの比率、大粒石の購入について日本語で解説します。
Guide section
Understand the cuts
Learn the main shapes, facet patterns and visual differences before comparing individual stones.
Back to guide routesGuide section
Compare cut and character
Use these guides to compare proportions, light behaviour and the differences between historic cutting families.
Back to guide routesGuide section
Check reports and condition
Read the grading report beside photographs, movement videos and a detailed condition examination.
Back to guide routesGuide section
Plan a purchase or setting
Work through the decisions that matter when buying a large stone, choosing a setting, matching a pair or considering natural colour.
Back to guide routes個別相談
Ask about a particular stone.
Tell us what you are comparing or collecting. We will answer in the context of real available material.