"Radiance of Untreated Black" Pentagon Rose-Cut Natural Diamond Ring | Sterling Silver

Thank you for visiting AARUSHI.
 
Introducing our pentagon rose-cut natural black diamond ring—a bold, architectural statement piece featuring an untreated 0.76 ct diamond displaying rich charcoal and brownish-grey undertones, cradled in a sculptural crossover band of unplated silver.
 
Design
 
Deep, multifaceted darkness embraced by fluid architectural lines.
 
At the center of this ring rests an untreated 0.76 ct natural black diamond (approx. 7.00 × 5.80 mm). Unlike commercially treated black diamonds that display a flat, opaque pitch-black hue, this stone is completely natural—revealing subtle veils of smoky grey and warm espresso brown as light shifts across its crystal depths.
 
Carved into a crisp pentagon rose cut, the gemstone balances the sharp geometric precision of five clean edges with the tranquil, watery surface reflections of antique faceting. The facets catch ambient daylight with an understated mirror-like sheen, lending remarkable nuance and life to the dark gemstone.
 
The ring band is crafted in solid silver without artificial surface plating. Sculpted into a dynamic crossover silhouette, the upper and lower metal bands intersect fluidly in three dimensions, presenting shifting contours from every perspective.
 
While providing substantial visual width across the knuckle, the open negative space between the intersecting lines keeps the ring airy, lightweight, and comfortable. Its monochromatic contrast and sculptural presence create an effortless, gender-neutral aesthetic that pairs seamlessly with minimalist tailoring or everyday streetwear.
 
Craftsmanship
 
 
 
Lapidary Dedication (India Atelier):Cut and polished at our own atelier in India, each untreated black diamond is hand-shaped to preserve its unique crystalline density and natural color graduation.
 
 
Master Japanese Bench Assembly:Skilled bench jewellers in Japan meticulously fabricate each intersecting line of the sculptural band by hand, ensuring structural poise, refined edges, and a smooth fit.
 
 
100% Untreated Natural Gemstone:This diamond is entirely untreated—free from artificial irradiation, laser treatment, or extreme heating—celebrating the Earth's authentic geological power.
 
 
Details
 
 
 
Item No.: ASV-8
 
 
Material: Solid Silver (Unplated / Non-plated)
 
 
Ring Size: Approx. Japan 16 (Approx. US 8 / UK P½–Q)
 
 
Center Diamond Weight: 0.76 ct
 
 
Diamond Dimensions: Approx. 7.00 × 5.80 mm
 
 
Diamond Color: Natural Black with Brownish-Grey Nuances (Untreated)
 
 
Diamond Cut: Pentagon Rose Cut
 
 
Band Style: Three-Dimensional Crossover Open-Band / Architectural Silhouette
 
 
Services & Sizing
 
 
 
Sizing Policy (Non-Resizable):Due to the complex three-dimensional geometry and open crossover architecture of this band, this ring cannot be resized. Please check your measurements carefully prior to purchasing (Current Size: Japan 16 / approx. US 8).
 
 
Bespoke Commissions & Remodeling: We gladly welcome custom designs, semi-bespoke commissions, and heirloom gemstone remodeling.
 
 
Private Salon Appointments: Experience the diamond’s shifting tonal depth, the ring's tactile volume, and its fit firsthand at our private salon (by appointment only). Please feel free to contact us to schedule your visit.
 
 
Jewelry Care & Silver Aging
 
 
 
Unplated Silver & Natural Patina:This piece is deliberately crafted without artificial rhodium or chemical plating. Over time, exposure to ambient air, natural skin oils, and touch will impart a soft, rich patina unique to genuine silver. Many collectors cherish this evolving character, but the original luster can easily be refreshed using a specialized silver polishing cloth.
 
 
Daily Cleaning & Storage:After wearing, gently wipe the surface with a soft lint-free cloth. To minimize natural oxidation when not in use, store your ring in an airtight pouch or padded jewelry box away from excessive humidity.
 
 
Structural Handling:While engineered for substantial everyday presence, open-structure fine jewelry requires mindful handling. Avoid heavy impacts or downward pressure that could compress or warp the open band.
 
 
Everyday Precautions:We strongly recommend removing your ring before exercising, bathing, showering, swimming in chlorinated or hot spring water, sleeping, or performing heavy household tasks.
 
 
For more details on gemstone nuances and care instructions, please refer to our [Purchase & Care Guide].