DIAMOND STORY

TASAKI showcases incomparable diamond quality by taking the finest rough stones,
and applying superior cutting and processing techniques.

DIAMANTAIRE

Diamond Appraisal Expert

A diamantaire is a specialist with expert knowledge and skill in diamond trading and appraisal. This title is reserved for individuals who have passed a rigorous selection process, including detailed handwriting analysis and in-depth interviews with psychologists, and who have demonstrated exceptional integrity and trustworthiness in assessing diamond quality. TASAKI is home to one of the few diamantaires in Japan, reflecting its commitment to the highest standards of expertise and craftsmanship.

CRAFTSMANSHIP

Craftsmanship that
guarantees quality

Earnest manufacturing based on taking responsibility from procurement of rough stones to processing

Procurement

We procure only the finest rough diamonds, following rigorous appraisal. As each stone is unique, every diamond is carefully assessed using an analyser to determine its optimal cut and reveal its full potential.

Cutting

With some of the most skilled craftspeople in the world performing the cutting of rough stones, TASAKI realises beautifully proportioned diamonds that are endowed with perfect symmetry. Diamond cutting is extremely precise and delicate work involving measurements as small as one hundredth of a millimetre, and our craftspeople are uncompromising and untiring in their pursuit of beauty.

Grading

Cut diamonds that have been graded by an external appraisal agency undergo further grading based on our own stringent standards to ensure TASAKI's unerring quality.

Processing

We employ various methods to set beautifully cut diamonds in a way that fully enhances their brilliance. Exhibiting the ultimate skill, our expert craftspeople elevate diamonds into jewellery of the highest quality through setting stones with perfect balance.