GEM KNOWLEDGE · LABORATORY NOTES
Lavender Rose Quartz & Dumortierite
The blue and pink-to-lavender beads are quartz. The blue inclusions have an aluminum-rich silicate composition consistent with dumortierite, while the pink-to-lavender beads appear more like rose quartz.
Also Dumortierite & Lavender Rose Quartz · Sample 1210 · #9 blue and lavender rose quartz · Approximately 0.45 cm beads · December 24, 2024.
What the two colors share
The laboratory identifies quartz in both bead colors. The blue beads contain an aluminum-rich silicate consistent with dumortierite. The report’s caption retains dumortierite as a possibility, and the summary says the blue beads appear to be colored by dumortierite.
The pink-to-lavender beads appear more like rose quartz. The report records differences in minor and trace elements between the two bead colors. Its original element table and wording are retained below, including the laboratory’s uncertainty.
One report, two directory names
Lavender Rose Quartz & Dumortierite and Dumortierite & Lavender Rose Quartz lead to this same report and collection video. These names help visitors find the material without presenting the blue inclusion identification as more conclusive than the laboratory describes.
View the original test results
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Original analytical report submitted by Soul Body Gems; Maine Mineral & Gem Museum laboratory. Original figures, wording and tables retained.
Read the report as text
Analytical Result Report
Sample id: 1210 (#9 blue and lavender rose quartz)
Submitted by: Soul Body Gems
Date completed: 12-24-2024
Operating conditions: An AMRAY 1830 SEM operated at 25 kV acceleration potential, 24 mm working distance, 0 degrees sample tilt, coated with 250 Å carbon, and also using the attached XRF unit operated at 30 kV.
Fig. 1: Photograph of the specimens. The beads are about 0.45 cm in maximum dimensions. Close-ups are shown on the right.
Fig.2: Backscattered electron image of an area of the specimen.
Fig. 3: Energy dispersive spectrum of spot 1 in Fig. 2. (quartz)
Fig. 4: Energy dispersive spectrum of spot 2 in Fig. 2. (the blue mineral, dumortierite is a possibiliity)
Table 1: trace element and minor element composition of the two colors of beads, in wt.
Summary of findings: This specimen (Fig. 1) is made from beads with blue color patches and more pinkish ones. The material is in both cases quartz (Figs. 2 and 3) but the blue material is a high aluminum silicate consistent with dumortierite. Table 1 shows that the blue beads are more aluminum-rich and the pink ones have higher manganese and also detectable and quantifiable manganese. The blue ones appear to be colored by dumortierite and the pink to lavender ones appear more like rose quartz.
Date: 12-24-2024 Signature
| Blue bead | Pink/lavender bead
Aluminum | 0.76 | 0.38
Iron | 0.03 | 0.02
Manganese | 0.02 | 0.06
Phosphorus | nd | 0.08