#gemstonedelar

[danugroupsblog]

A real moment inside our source-area gemstone office in Sri Lanka.

Here, gemstones are checked directly with customers from France — close to the source, close to the process, and close to the people who understand each stone.

At Danu Group, every gemstone carries more than beauty. It carries origin, selection, trust, and a real journey from Sri Lanka’s gem source areas.

[cityofgemblog]

From Tanzania Rough to Finished Green Gemstones: A City of Gem Cutting Journey

From Tanzanian rough stones to finished green gemstones, this City of Gem cutting journey shows how natural material, careful planning, and skilled lapidary work come together. Six unheated green gemstones from Tanzania were sourced by City of Gem and cut by Mr. Praveen into a finished parcel with a total weight of 11.08 ct and excellent luster. Read full article on website.

[danugroupsblog]

Natural Rambuka Alexandrite Crystal

A rare natural alexandrite crystal from Rambuka village around mining in Sri Lanka, showing glassy transparency, excellent luster, visible natural growth marks, and a remarkable twin-like crystal appearance.

Read full article on website.

[cityofgemblog]

Ceylon Natural Chrysoberyl Sixling Crystal

Ceylon Natural Chrysoberyl Sixling Crystal -

This natural Chrysoberyl crystal weighs 4.12 carats and measures 8.3 x 9.8 x 6.8 mm. It was found in Kolonna village around mining in Sri La

Some gemstones are admired for their polished brilliance, while others are treasured because nature has already shaped them into something extraordinary. This Ceylon Natural Chrysoberyl Sixling Crystal is one of those rare examples, where the beauty is not created by cutting, but by the crystal’s own natural formation.

This natural Chrysoberyl crystal weighs 4.12 carats and measures 8.3 x 9.8 x 6.8 mm. It was found in Kolonna village around mining in Sri Lanka, a country historically known as Ceylon and respected worldwide for its long gemstone heritage. Sri Lanka is especially known for sapphires, chrysoberyl, spinel, garnet, zircon, and many other natural gemstones formed through ancient geological processes.

The most important feature of this specimen is its sixling crystal formation, also known as cyclic twinning. Instead of growing as a simple single crystal, Chrysoberyl formed with a natural repeated structure that creates a flower-like or petal-like appearance. In the local gemstone market, stones like this may sometimes be called flower crystal, butterfly crystal, or petal crystal because of the way the crystal sections appear to spread outward like natural wings or petals.

Its yellowish green color gives the specimen a soft natural glow, while the surface lines, internal features, and growth marks show the original character of the crystal. These natural features are not defects in this category. For collectors and gemological students, they are part of the identity of the specimen, helping show how the crystal grew inside the earth before it was discovered.

This crystal is unheated, which adds further importance to its natural condition. No treatment has been used to change its appearance, allowing the collector to appreciate the stone as nature formed it. For rare crystal specimens, natural formation, origin, and preservation are often more meaningful than cutting potential.

Although this is not presented as a faceted jewellery gemstone, a well-preserved crystal like this can still inspire collectors, gemstone designers, and fine jewellers. It may be kept as a mineral specimen, used in a gemstone collection, studied for its formation, or presented in a custom display-style jewellery concept where the natural crystal shape is respected.

This Ceylon Chrysoberyl Sixling Crystal represents the quiet beauty of Sri Lankan gemstone nature. It is small in size, but rich in formation, character, and gemological interest. For those who appreciate natural gemstones beyond polished forms, this specimen carries the charm of origin, rarity, and untouched crystal structure.

[cityofgemblog]

Sri Lanka & Madagascar Natural Mixed Sapphire Collection

Sri Lanka & Madagascar Natural Mixed Sapphire Collection -

A 25-piece natural mixed sapphire collection with a total weight of 69.00 ct, consisting of stones from approximately 4.00 ct to 1.90 ct eac

A fine gemstone collection is not always about one color or one shape. Sometimes, its beauty comes from variety, balance, and the way different stones speak together in one complete layout. This Sri Lanka and Madagascar natural mixed sapphire collection is a good example of that idea. With 25 faceted gemstones and a total weight of 69.00 carats, this parcel brings together a wide range of colors, shapes, and visual moods, giving jewellery designers a flexible and inspiring selection for custom work.

The stones range from approximately 4.00 carats to 1.90 carats each, making the parcel especially useful for jewellery planning where size presence matters. Within the collection, there are 11 pieces above 3 carats, 13 pieces above 2 carats, and 1 piece above 1.90 carats. This gives the parcel a strong design advantage because the stones are not too small for individual settings, while still offering enough variety for matched layouts, statement pieces, rings, pendants, earrings, or multi-stone jewellery concepts.

The color range is one of the most attractive parts of this collection. Blue, yellow, pink, purple, green, orange, red, and other fancy tones appear together in a way that feels lively but still balanced. For a jewellery designer, this kind of parcel works almost like a natural color palette. Some stones can be used as center stones, while others can support a layout through contrast, harmony, or tone variation. The mixed faceted shapes also add design freedom, allowing each stone to be placed according to its own character rather than forcing the entire collection into one fixed style.

Sri Lanka and Madagascar are both important gemstone sources with strong reputations in the colored stone world. Sri Lanka, historically known as Ceylon, is respected for its long gemstone heritage, especially natural sapphires and fancy-color corundum. Madagascar has also become an important source for attractive sapphire material, often producing a wide range of colors suitable for modern jewellery design. A collection combining both origins gives buyers and designers access to a broader gemstone story while still keeping the parcel focused on natural corundum.

This collection includes both heated and unheated stones, which is clearly stated for transparency. In the sapphire trade, heated stones are widely accepted when properly represented, while unheated stones carry their own natural appeal. What matters most is honest description, good clarity, attractive color, and practical jewellery potential. With VS to clean clarity, this parcel has the kind of visual quality that makes it suitable for serious design work and collector interest.

For fine jewellers, this collection offers possibility. It can become a group of individual custom pieces, a coordinated jewellery set, or a colorful design story built around natural sapphire variety. For collectors, it represents a beautiful mixed sapphire parcel with strong color diversity and respectable size presence. For buyers looking for gemstone layouts, it gives flexibility without losing quality.

This is the charm of a well-selected mixed sapphire collection. It is not only about one stone, but about the relationship between many stones — color beside color, shape beside shape, and origin connected through natural beauty. From Sri Lanka and Madagascar to future jewellery designs, this parcel carries both gemstone culture and creative opportunity.

[cityofgemblog]

 Natural Tsavorite Garnet rough

From a 2.65 ct natural Tsavorite Garnet rough to a certified 1.19 ct oval step cut gemstone, this journey shows the true value of careful gemstone planning. Sourced from Tanzania, shaped with precision, certified by CSL, and prepared for its new owner in Hungary, this stone carries more than color — it carries a complete story from rough beauty to finished elegance. At City of Gem, every stone is studied with respect for its natural structure, best cutting direction, and final jewellery potential. Read full article on web.

[danugroupsblog]

Behind every finished gemstone and jewellery piece, there are skilled hands, sharp focus, and years of practice.

At Danu Group, we believe true value is not created only when a stone shines in the showcase, but from every step before that — sourcing, planning, cutting, setting, and finishing with care. where patience, craftsmanship, and experience turn raw materials into meaningful creations.

[danugroupsblog]

Kornerupine — a gemstone with a quiet but unforgettable character.

Its greenish-yellow glow, natural internal structure, and rare identity make it a special piece for collectors who appreciate gemstones beyond common beauty. At Danu Group, we value stones that carry uniqueness, rarity, and natural personality from the earth.

A rare gem with depth, texture, and story.