77 g ruby on marble – Coherent Geometry – 6.2×5.9×2.6 cm Crystal on matrix- 77 g





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Ruby (corundum) crystal on white coarse-grained marble from the Sar-e-Sang region, Badakhshan, Afghanistan, weighing 77 g with dimensions 6.2 × 5.9 × 2.6 cm, featuring two flat cut surfaces for stable display and a wedge-shaped profile of crystal and matrix.
Description from the seller
This piece possesses two nearly flat, smoothly faceted surfaces, which make it particularly easy and stable to set up—a practical advantage over many irregularly grown matrix steps. The front view, by contrast, shows a distinctly more angular profile: a wedge-shaped cut-out reminiscent of a quarter of a pyramid.
Noteworthy is that the ruby crystal itself shows a very similar wedge-shaped growth form—a random but appealing geometric correspondence between crystal and surrounding matrix, which gives the entire piece an unusually harmonious, almost self-contained impression.
As with all finds from the Sar-e-Sang region in Afghan Badakhshan, the deposit lies high in the Hindu Kush and is accessible only for a few months each year due to snow and extreme weather. The ruby grows directly in coarse white marble, with chromium traces giving corundum its characteristic red coloration.
Under long-wavelength UV light the ruby glows intensely red, while the surrounding marble fluoresces in cool blue.
Mineral / Trade name: Ruby (Corundum) on Marble
Origin: Sar-e-Sang region, Badakhshan, Afghanistan
Matrix: White coarse-grained marble
Dimensions: 6.2 × 5.9 × 2.6 cm
Weight: 77 g
Special features: Two flat-cut faces enable stable standing; wedge-shaped alignment of matrix and ruby crystal is strikingly concordant; strong fluorescence under LW-UV (ruby red, marble matrix blue); deposit accessible only for a few months each year
Seller's Story
This piece possesses two nearly flat, smoothly faceted surfaces, which make it particularly easy and stable to set up—a practical advantage over many irregularly grown matrix steps. The front view, by contrast, shows a distinctly more angular profile: a wedge-shaped cut-out reminiscent of a quarter of a pyramid.
Noteworthy is that the ruby crystal itself shows a very similar wedge-shaped growth form—a random but appealing geometric correspondence between crystal and surrounding matrix, which gives the entire piece an unusually harmonious, almost self-contained impression.
As with all finds from the Sar-e-Sang region in Afghan Badakhshan, the deposit lies high in the Hindu Kush and is accessible only for a few months each year due to snow and extreme weather. The ruby grows directly in coarse white marble, with chromium traces giving corundum its characteristic red coloration.
Under long-wavelength UV light the ruby glows intensely red, while the surrounding marble fluoresces in cool blue.
Mineral / Trade name: Ruby (Corundum) on Marble
Origin: Sar-e-Sang region, Badakhshan, Afghanistan
Matrix: White coarse-grained marble
Dimensions: 6.2 × 5.9 × 2.6 cm
Weight: 77 g
Special features: Two flat-cut faces enable stable standing; wedge-shaped alignment of matrix and ruby crystal is strikingly concordant; strong fluorescence under LW-UV (ruby red, marble matrix blue); deposit accessible only for a few months each year

