4.50 ct Ceylon Natural Unheated Blue Sapphire Rough from Rakwana, Sri Lanka – Facet Grade Cutting Material

Stone Identity & Quality

This is a Ceylon Natural Unheated Blue Sapphire rough weighing 4.50 ct and measuring 8 × 7.3 × 7.2 mm. The stone is sourced from Rakwana village around mining in Sri Lanka and is presented as facet-grade rough for cutting evaluation. It has a compact shape with useful depth, making it suitable for professional rough planning by cutters, dealers, and buyers who understand natural sapphire material.

Color & Visual Characteristics

The stone shows a natural blue body color with slightly different visual behavior depending on light direction and background. Under strong light, some areas appear brighter and more open, while deeper areas show stronger blue tone. As with most rough sapphire, final face-up color can only be judged after proper orientation and cutting analysis.

Internal & External Features

This rough sapphire shows natural surface marks, visible internal characteristics, and inclusion areas that need to be studied before cutting. These features are part of the rough evaluation process and should be considered when planning the final shape. The stone should be examined under light to identify clean areas, inclusion direction, and possible surface removal.

Cutting, Specimen, or Treatment Potential

As facet-grade rough, this stone has cutting potential, but the final result should not be promised before cutter evaluation. A cutter should study the orientation, depth, inclusion placement, and color direction before deciding the final shape. Custom cutting and certification can be arranged if suitable. The goal should be to balance weight retention, clarity, color, and final appearance rather than only saving maximum weight.

Source & Ethical Position

Danushka Gems & Minings works directly with Sri Lankan gemstone source areas, presenting rough stones with honest evaluation and practical details. Our focus is to show the real condition of each stone, including both its potential and its natural features. This allows gem cutters, dealers, collectors, jewelers, and international buyers to make informed decisions based on transparent source-connected supply.