Sapphire · Facet Rough · Synthetic · #45 Alexandrite · Split Boule
40,30 € – 61,30 €
incl. VAT plus shipping
Pale blue to violet color-change synthetic sapphire rough.
Flame-fusion grown corundum in #45 Alexandrite, displaying pale blue tones under cool lighting and violet under warm lighting. Select your individual boule by photograph, weight, and dimensions.
Description
A delicate pale blue that shifts to violet gives #45 Alexandrite synthetic sapphire its distinctive character. Under cool lighting, the material displays soft blue tones, while warmer light brings out its violet coloration.
This color-change effect responds to the light source. Compare the rough under cool daylight and a warm incandescent or halogen lamp to explore its different appearances. The strength and exact shade of the change depend on the lighting; LED lamps may produce different results according to their spectral composition.
For gemstone cutters, #45 offers an opportunity to work with a softer color palette and an optical effect that adds interest to the finished stone. Its appearance after faceting depends on the size, orientation, and proportions of the design. Thicker sections can show greater color saturation, while smaller or shallower stones may appear lighter.
The elongated boule form allows flexible planning for individual gemstones or several cutting blanks. With a Mohs hardness of 9 and the ability to take a fine polish, synthetic sapphire is suitable for both experienced precision faceters and hobby cutters exploring color-change materials.
“#45 Alexandrite” is the supplier’s color designation. The material is laboratory-grown sapphire (corundum), not chrysoberyl alexandrite.
Each available piece has its own photograph, weight, dimensions, and reference number. Select a variation to view its details. You will receive the exact piece pictured for your selection.
Specifications
- Stone Type: Synthetic Color-Change Sapphire (Corundum)
- Growth Method: Flame Fusion
- Supplier: Starsgem
- Weight: See selected variation
- Dimensions: See selected variation
- Color Designation: #45 Alexandrite
- Cool-Light Color: Pale Blue
- Warm-Light Color: Violet
- Optical Effect: Color Change
- Transparency: Transparent Rough
- Facet Potential: Facet Grade
- Mohs Hardness: 9.0
- Facetable Volume: ~99%
- Estimated Yield: ~40%
Additional information
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Item | #5061, #5062, #5063, #5064, #5065, #5066, #5067, #5068, #5069, #5070, #5071, #5072, #5073, #5074, #5075, #5076, #5077, #5078, #5079 |
