EXCEPTIONAL SAPPHIRE COLOR GREEN-YELLOW WITH BLUE HUES - GEM QUALITY SRI LANKA (CEYLAN) - Height: 4 mm - Width: 3.5 mm- 0.1 g - (1)

Remarkable natural sapphire from Sri Lanka presenting a particularly singular chromatic combination of green, yellow and blue, paired with beautiful transparency and preserved raw morphology
Superb rough natural sapphire from Sri Lanka (Ceylon)

This stone immediately stands out for its unusual appearance: its dominant color shifts between a very light green-yellow, a bright yellow-green, and olive-toned hues, punctuated by small blue areas clearly visible inside the crystal, creating a striking contrast within the crystal interior.
The blend of several tones in one stone gives it a remarkable personality. Depending on orientation, traversed thickness, and lighting conditions, the perception of its color can change considerably.

A particularly atypical green-yellow-blue palette

Color is undeniably the major character of this specimen.
The main mass of the crystal displays a very bright green-yellow hue, sometimes close to a lemon-yellow with a slight greenish tint. Some parts appear cooler and lean more toward pale green, while others reveal a warmer yellow tone.
But the most fascinating visual element lies in the small blue concentrations visible inside the stone.
In macro photography, several deep blue to blue-green specks appear distinctly in the lighter material. They create a spectacular contrast with the yellow-green background of the crystal and give this stone an immediately recognizable identity.
This distribution of colors is particularly interesting for gemological observation and for collectors.

A stone that evolves with the light

The interest of such a crystal does not stop at a fixed color.
Depending on the stone’s orientation relative to the light, some areas become almost pale yellow translucent, while others take on a more green or olive appearance. The bluish areas remain visible as small chromatic accents in contrast.
This interaction between color and light creates an unusual sense of depth.
The most transparent parts allow light to penetrate deeply into the crystal, while the natural surface textures produce a multitude of reflections that are much brighter.

Beautiful transparency for a rough crystal

This specimen shows particularly interesting transparency for a stone kept in its natural state.
Some areas are transparent enough to allow direct observation of the crystal interior and its chromatic variations.
Other sectors are more translucent due to the surface morphology and natural internal structures.
This alternation is precisely what gives the stone so much relief: it does not display the uniformity of a faceted gem, but a true three-dimensional natural architecture.

A natural morphology rich in detail

The crystal has been kept rough and un Facetté.
Its compact morphology presents many reliefs, irregularities and small reflective surfaces. Under strong magnification, these produce an extremely complex network of reflections.
Some surface areas appear almost silver under the lighting, while the more regular parts reveal more of the stone’s internal color.
The upper part notably has a more transparent zone allowing particularly good observation of the internal blue specks.
This morphology makes the stone a specimen especially interesting to observe under a loupe or microscope.

A striking contrast on a dark background

When photographed on a black background, the crystal reveals all its luminosity.
The yellow-green areas seem almost lit from within, while the small blue concentrations stand out with remarkable intensity. The white reflections from natural surfaces further enhance the relief.
At this scale, macrophotography reveals details difficult to perceive with the naked eye and shows the complexity of a crystal that measures only a few millimeters.

Corundum: an exceptional mineral family

Sapphire belongs to the corundum family, whose basic chemical formula is Al2O3.
Corundum has a hardness of 9 on the Mohs scale, making it one of the hardest natural minerals, just behind diamond on the classic scale.
Contrary to the idea that all sapphires are blue, corundum can exhibit a remarkable diversity of colors. The term sapphire generally refers to gem corundums of colors other than red, the latter variety traditionally called ruby.
Yellow, green and intermediate colors thus belong to the wide universe of fancy sapphires or colored sapphires.

Ceylon: a historic major source

Sri Lanka, historically known as Ceylon, has for centuries been one of the world's most famous gem-bearing regions.
The island is renowned for the extraordinary diversity of colors found in its corundums: blue, yellow, pink, purple, orange, green and various intermediate combinations.
Rough crystals are particularly interesting for collectors, as they allow direct study of color and material characteristics before any cutting or lapidary transformation.

Stone characteristics
Mineral: Corundum – natural sapphire
Origin: Sri Lanka (Ceylon)
Weight: 0.51 carat
Dimensions: 4 × 3.5 × 3.2 mm
Dominant color: Green-yellow
Visible nuances: Lemon yellow, pale green, green-yellow, olive and blue specks
Chromatic aspect: Several visible tones depending on zones and orientation
Transparency: Transparent to translucent depending on parts
Luster: Vitreous
Condition: Natural rough
Cut: Non-faceted
Quality: Gem quality
Corundum hardness: 9/10 on Mohs scale
Piece type: Rough gemstone / mineral collection specimen

A particularly interesting piece for collectors

This specimen combines several particularly appealing characteristics: prestigious origin, good transparency, expressive natural morphology, and especially a green-yellow chromatic combination punctuated by blue that gives it a truly singular appearance.
It will naturally find its place in a collection devoted to Sri Lankan sapphires, colored corundums, rough gemstones, natural color variations or Sri Lankan gem minerals.
Only a few millimeters away, this stone reveals under magnification a true mineral landscape made of transparency, reliefs and contrasting colors.

A stunning natural rough sapphire from Sri Lanka of 0.51 carat, remarkable for its green-yellow-blue combination and the visual richness of its natural crystal — a standout piece for a collection of fine gems and minerals.

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