Kooheji Diamonds
At Kooheji Jewellery, our careful diamond selection process ensures every gem meets our high standards for clarity, embodying our dedication to natural purity, exceptional quality, and certified brilliance. This commitment defines our legacy of sophistication and timeless elegance.
Kooheji Diamonds is recognized for its exceptional craftsmanship and the luxury experience it offers in the world of fine jewellery. Specializing in high-end diamond jewellery, Kooheji Diamonds caters to a clientele that appreciates the sophistication and timeless elegance of meticulously crafted pieces. Each piece of jewellery from Kooheji Diamonds is a testament to the brand’s commitment to quality, showcasing exquisite designs that blend traditional craftsmanship with contemporary aesthetics.
The brand is known for its selection of premium diamonds and precious stones, ensuring that every piece reflects brilliance, clarity, and an unparalleled level of quality. From engagement rings and wedding bands to bespoke jewellery creations, Kooheji Diamonds provides a personalized service, allowing clients to create or choose pieces that perfectly match their style and preferences.
Kooheji Diamonds positions itself not just as a retailer of fine jewellery, but as a purveyor of luxury experiences, where each customer’s journey is as unique and precious as the diamonds they select. This commitment to excellence and customer satisfaction has established Kooheji Diamonds as a distinguished name in the world of luxury jewellery.
Color Grades
The whiter the diamond, the rarer it is. Kooheji Jewellery exclusively selects stones of the highest color grades: G-H (Near colorless), D (colorless +), E (colorless) and F (extra white +), on a scale from D to Z.
The highest colour grade which is extremely rare and the most valuable.
Only minute colour traces can detected by an expert gemmologist. A rare, high quality diamond.
Slight colour can be detected by an expert gemmologist, but still considered “colourless”. A high quality diamond.
Colour is only slightly noticeable when compared to diamonds of better grades, but offers excellent value.
Colour is only slightly noticeable when compared to diamonds of better grades, but offers excellent value.
Colour can be detected, but offers good value.
Colour can be detected, but offers good value.
Diamond Clarity
In the world of diamonds, clarity signifies the presence and characteristics of inclusions within a diamond. At Kooheji Jewellery, our selection process ensures that every gem possesses a clarity grade of SI or above, where any inclusions are virtually imperceptible at 10x magnification. This standard underscores our dedication to offering jewels of unmatched purity and radiant brilliance, embodying the essence of timeless elegance and sophistication.
Extremely rare and valuable, flawless diamonds have no internal or external flaws. Less than 1% of all diamonds are FL clarity.
Extremely rare and valuable, these diamonds have no internal flaws but may have minute surface blemishes visible under 10x magnification.
Miniscule inclusions are very difficult to see under 10x magnification, even for expert gemologists.
Slightly more inclusions than VVS1, but still very difficult to see under 10x magnification even for expert gemologists.
Inclusions cannot be seen with the naked eye and are difficult to see under 10x magnification.
Slightly more inclusions than VS1, difficult to see under 10x magnification and typically cannot be seen with the naked eye.
Inclusions are visible under 10x magnification, but are generally not visible to the naked eye.
Inclusions are visible under 10x magnification and may be visible to the naked eye. More inclusions than SI1.
Diamond Cuts
The cut of a diamond, encompassing its shape, proportions, and facet arrangement, plays a pivotal role in its brilliance and the way it interacts with light. Kooheji Jewellery selects only the finest cuts, ranging from the classic brilliant to the elegant marquise and the modern cushion, ensuring each gem achieves maximum sparkle. Our experts prioritize “excellent” and “very good” ratings, with a keen focus on symmetry, polish quality, and cut finishing, to unveil the true fire and radiance of every diamond.
Round
Radiant
Princess
Pear
Oval
Marquise
Heart
Emerald
Cushion
Asscher
Diamond Carats
The weight of a diamond is expressed using a worldwide standard unit of measure: the carat. One carat is equal to 0.20 grams. For its central stones, the Kooheji Jewellery selects diamonds of excellent size & quality.
5.4mm
5.68mm
5.93mm
6.17mm
6.4mm
8.05mm
9.2mm
Crafted With Love
At Kooheji Jewellery, we take immense pride in our artistry and craftsmanship, creating exquisite pieces that are a testament to our passion and dedication. Every item in our collection is meticulously handcrafted with utmost precision, ensuring unparalleled quality and beauty.
MAKE IT SPECIAL
Complementary Kooheji's Jewellery signature gift wrapping for a special gift.
CUSTOM ENGRAVING
Add a personal touch to your piece with our customized engraving service.
FREE RETURNS & EXCHANGE
Enjoy an easy return and exchange process on all your orders.