Projects
- Crescent Vert -
Kunio Nakajima
- Crescent Vert -
With 43 years of experience as a jewelry designer, using Crescent Vert stones provided me with the rare opportunity to design freely with large gemstones.
In celebration of Kyocera's 60th anniversary in 2019, we collaborated with “In the Garden” jewelry designer Kunio Nakajima on new Crescent Vert jewelry designs using his special enamel technique.
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IntroductionHow did you feel when you heard about this project?
I was humbled by the idea. I worked with Crescent Vert gemstones decades ago at Chiho Tamiya’s jewelry design studio. I feel a special attachment to these gorgeous gemstones because my first job as a jeweler was working with Crescent Vert emeralds.
This reunion after 43 years was a highlight of my career as a jewelry designer. I eagerly anticipate the opportunity to design freely with these beautiful gemstones. -
ProductionWhat is your design concept for this project?
My goal is to show customers something they’ve never seen before by highlighting the beauty of Crescent Vert gemstones. I believe the combination of these gemstones and my enamel color technique developed for my "In the Garden" brand will make that happen.
I will choose the colors of enamel carefully to emphasize the beauty of Crescent Vert. -
Kyocera's SolutionAre you pleased with the finished pieces?
The large and stunning pieces match the sophisticated feel of my pliqua a jour technique and represent new, innovative styles.
I'm confident that I’ve successfully made jewelry of the very highest quality.
I'm excited by the enthusiastic reception for these new Crescent Vert designs — customers have embraced the finished pieces with strong praise. I personally think the softer colors are the most popular in this collection. -
What's Next?Crescent Vert gems can be cut and shaped to fit design concepts that would be extremely difficult to achieve using mined gemstones.
Jewelry designed by an imagination free from restrictions brings surprise and delight.
I expect Crescent Vert to inspire more original jewelry designs and make many people smile in the process.
Going forward, I will build on the experience gained from this valuable design collaboration on the Crescent Vert enamel design collection to design new, unique pieces of jewelry.
Related Stones
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Star Ruby
Star Ruby
Star ruby, in a cabochon cut, emits six distinct rays of light. These asterisms are named for the Greek word meaning “star.”
This mysterious phenomenon—starlight reflected inside the gemstone—is caused by trace needle-formed rutiles and corundum within the gem. Crescent Vert star ruby features a six-rayed star shimmering across the gem’s surface as it shines bright red and full of dignity.Available in sizes up to 10 carats.* If you need a larger stone, please contact us.View Comparison Table Item Crescent Vert Star Ruby Natural Star Ruby Chemical Composition Al2O3 Al2O3 X-ray Diffraction Same as natural stone A pattern specific to Star Ruby Spectroscopic Analysis Same as natural stone Specific absorption of Star Ruby Crystal system Hexagonal Hexagonal Mohs Hardness 9 9 Specific Gravity 4 3.90～4.01 Melting Point 2050℃ 2050℃ Transparency Transparent ～ Translucent Transparent ～ Translucent Refractive Index 1.762～1.770 1.762～1.770 Double Refraction 0.008 0.008 Average Dispersion 0.018 0.018 Pleochroism Yellowish red, Bright red Strong bright red -
Sapphire
Sapphire
While sapphire comes in many colors, deep blue sapphire is the most famous and the standard against which other blue gemstones are measured. This ancient gemstone is said to bring wisdom, protect the wearer from evil, and promote healing. Its bright blue sparkle has been loved for centuries as a symbol of the heavens and source of faithfulness and peace of mind.
Our Crescent Vert blue sapphire is highly valued for its cornflower blue color.Available in sizes up to 10 carats.* If you need a larger stone, please contact us.View Comparison Table Item Crescent Vert Blue Sapphire Natural Blue Sapphire Chemical Composition Al2O3 Al2O3 X-ray Diffraction Same as natural stone A pattern specific to Blue Sapphire Spectroscopic Analysis Same as natural stone Specific absorption of Blue Sapphire Crystal System Hexagonal Hexagonal Mohs Hardness 9 9 Specific Gravity 4.01 3.90 ~ 4.00 Melting Point 2050°C 2050°C Transparency Transparent Transparent Refractive Index 1.762 ~ 1.770 1.760 ~ 1.768 / 1.770 ~ 1.779 Double Refraction 0.008 0.008 ~ 0.010 Average Dispersion 0.018 0.018 Pleochroism Pale greenish blue/dark blue Pale greenish blue/dark blue Chelsea Color Filter Examination Unchanged Black green, Unchanged -
Emerald
Emerald
The deep green sparkle of emerald has mesmerized people since antiquity. The oldest of all jewels, emerald evokes comfort, creativity and bliss. Formed from beryl, alumina and silicic acid, the beautiful green color is produced by trace amounts of chrome within the gem. The world’s highest-grade emeralds come from a mine in Muzo, Colombia. Crescent Vert emerald compares favorably with gemstones from Muzo, exhibiting the same captivating color with blue undertones.
Available in sizes up to 1 carat.* If you need a larger stone, please contact us.View Comparison Table Item Crescent Vert Emerald Natural Emerald Chemical Composition 3BeO・Al2O3・6SiO2 3BeO・Al2O3・6SiO2 X-ray Diffraction Same as natural stone A pattern specific to Emerald Spectroscopic Analysis Same as natural stone Specific absorption of Emerald Crystal System Hexagonal Hexagonal Mohs Hardness 7.5～8.0 7.5～8.0 Specific Gravity 2.65～2.70 2.65～2.74 Melting Point 1410℃ 1410℃ Transparency Transparent Transparent ～ Translucent Refractive Index 1.563～1.568 1.565～1.598 Double Refraction 0.005 0.005～0.008 Average Dispersion 0.014 0.014 Pleochroism Green and Bluish green Green and Bluish green Chelsea Color Filter Examination Dark Red-Pink Dark Red-Pink -
Padparadscha
Padparadscha
Called the King of Sapphires, padparadscha is found only in Sri Lanka. Its name means "the morning glow of the Indian Ocean." Padparadscha sapphire is a very rare gemstone. Its remarkable pinkish-orange color evokes dignity and mercy.
Padparadscha sapphire, blue sapphire and ruby all originate from a mineral called corundum. Only gemstones that achieve an aurora red color—a delicate balance between orange and pink—are worthy of being called Crescent Vert padparadscha.Available in sizes up to 10 carats.* If you need a larger stone, please contact us.View Comparison Table Item Crescent Vert Padparadscha Natural Padparadscha Chemical Composition Al2O3 Al2O3 X-ray Diffraction Same as natural stone A pattern specific to Padparadscha Spectroscopic Analysis Same as natural stone Specific absorption of Padparadscha Crystal system Hexagonal Hexagonal Mohs Hardness 9 9 Specific Gravity 4.01 3.90～4.01 Melting Point 2050℃ 2050℃ Transparency Transparent Transparent Refractive Index 1.762～1.770 1.760～1.768 Double Refraction 0.008 0.008 Average Dispersion 0.018 0.018 Pleochroism Orange, Pinkish orange, Yellowish orange Orange, Pinkish Orange, Yellowish orange Chelsea Color Filter Examination Red Red
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