About the Store
#1 Diamond Source stands as a distinguished presence in New York’s renowned Diamond District, representing over three decades of specialized expertise in wholesale diamond distribution and custom jewelry manufacturing. Established in 1990 and pioneering online diamond sales since 1999, this family-owned business has maintained an exemplary reputation through its direct-to-consumer approach that eliminates traditional retail markups while providing exceptional gemological guidance. Operating from their 47th Street location in Manhattan’s jewelry hub with appointment-based service, the company combines the wholesale pricing advantages typically reserved for industry insiders with personalized consultation from GIA-certified gemologists, creating a distinctive business model that bridges professional diamond trading and consumer accessibility. Unlike typical jewelry retailers who purchase finished pieces from manufacturers, #1 Diamond Source maintains vertical integration through their in-house manufacturing facility, allowing them to source rough diamonds, oversee cutting and polishing processes, and create custom settings under one ownership—a comprehensive approach that ensures quality control throughout the entire production journey while maximizing value through the elimination of multiple profit margins typically built into traditionally distributed jewelry.
What truly distinguishes #1 Diamond Source within the competitive fine jewelry landscape is their commitment to transparency and education throughout the diamond selection process. Each stone in their extensive inventory of over 50,000 diamonds comes with comprehensive certification from respected independent authorities including the Gemological Institute of America (GIA) or American Gem Society (AGS), providing objective verification of each diamond’s characteristics rather than relying on internal grading systems that may inflate quality assessments. Their consultative approach prioritizes customer education regarding the established “Four Cs” of diamond evaluation—cut, color, clarity, and carat weight—empowering clients to make informed decisions based on personal priorities and budget considerations rather than emotional sales techniques common in traditional jewelry retail. This educational philosophy extends to their digital presence, where detailed explanations of diamond characteristics, grading standards, and jewelry manufacturing processes provide resources for independent research before consultation. The company’s specialist gemologists offer objective guidance tailored to individual preferences, helping clients navigate the complex balance between visible beauty and technical specifications to identify stones that deliver maximum visual impact within specific budget parameters. This approach transforms what can be an intimidating purchase into an educational journey, with clients gaining valuable knowledge alongside their investment in fine jewelry.
Beyond technical expertise and transparent pricing, #1 Diamond Source has established their reputation through ethical sourcing practices and comprehensive customer assurance policies that acknowledge the significant financial and emotional investment represented by fine jewelry purchases. Their diamond inventory adheres to Kimberley Process requirements and additional ethical standards ensuring conflict-free sourcing, with guarantees that all stones originate from socially responsible mining operations that avoid environmental exploitation or human rights concerns. The company’s confidence in their products manifests through generous policies including 30-day return guarantees on loose diamonds, complimentary secure shipping via FedEx with appropriate insurance coverage, and detailed appraisal documentation provided without additional charges—services that demonstrate commitment to customer satisfaction beyond the initial transaction. For custom jewelry creations, their in-house manufacturing capabilities enable precise execution of client visions with direct communication between customers and craftspeople, eliminating the miscommunications that can occur when design, sourcing, and production involve multiple separate entities. This integrated approach to both product quality and customer experience has earned #1 Diamond Source exceptional ratings and testimonials throughout their decades in operation, with many clients returning for additional purchases or referring friends and family—the ultimate endorsement in an industry where reputation and trust remain paramount despite technological advancements in distribution and marketing.
Departments and Products:
The Loose Diamonds department represents #1 Diamond Source’s cornerstone offering, featuring an extensive inventory of over 50,000 individually certified stones available for custom jewelry creation or investment purposes. This comprehensive collection spans all popular diamond shapes including the classic round brilliant, princess, emerald, asscher, cushion, pear, marquise, oval, and heart cuts, with each shape offering distinct visual characteristics and light performance qualities. The inventory encompasses diverse quality grades across the Four Cs spectrum, from rare D-Flawless investment-grade specimens to excellent value options balancing visible quality with affordability. Every stone in this department comes with independent certification from respected authorities like GIA or AGS, providing detailed documentation of specific characteristics including precise measurements, proportions, fluorescence levels, and inclusion mapping beyond the basic quality grades. Particularly noteworthy is the company’s emphasis on cut quality—the factor most directly influencing a diamond’s visual brilliance and sparkle—with inventory emphasizing excellent and ideal cut grades that maximize light performance regardless of other characteristics. Available carat weights range from modest accent stones under 0.25 carats to impressive center stones exceeding 5 carats, with special acquisition capabilities for clients seeking exceptional sizes or qualities beyond the standard inventory. This department’s strength lies in its exceptional breadth and depth, allowing clients to compare numerous options within specific parameters rather than selecting from the limited inventory typical of traditional retail establishments.
The Custom Engagement Rings department showcases #1 Diamond Source’s distinctive manufacturing capabilities, transforming selected loose diamonds into personalized bridal jewelry through their in-house production facility. This department features diverse setting styles ranging from classic solitaires that emphasize center stone prominence to elaborate vintage-inspired designs incorporating intricate metalwork and accent diamonds. Available precious metals include traditional 14K and 18K gold in yellow, white, and rose variations, alongside platinum options for clients seeking maximum durability and naturally white appearance without rhodium plating. Beyond standard catalog designs, the department specializes in fully custom creations developed through collaborative consultation, transforming client inspirations, sketches, or reference images into unique pieces that reflect personal significance and style preferences. The design process typically begins with digital renderings that allow visualization and refinement before production, ensuring precise execution of client expectations. Technical innovations including tension settings, floating designs, and precision-cut channels demonstrate the workshop’s advanced capabilities, while hand-finishing techniques add distinctive character impossible to achieve through mass production methods. This department’s integration with the loose diamond inventory creates seamless coordination between stone selection and setting design, with considerations including proper prong configurations for specific diamond shapes, appropriate head heights based on wearer lifestyle, and proportional balance between center stones and supporting elements—all factors that contribute to both aesthetic harmony and long-term wearability.
The Fine Jewelry Collection extends beyond bridal offerings to encompass diverse luxury accessories including diamond stud earrings, tennis bracelets, pendant necklaces, anniversary bands, and fashion rings suitable for various occasions and personal expressions. Like the engagement department, these pieces feature diamonds sourced directly through the company’s wholesale channels and crafted in their manufacturing facility, maintaining consistent quality standards and value advantages. Diamond stud earrings receive particular emphasis, offering investment-worthy classics with matching stones specifically selected for identical appearance rather than merely similar specifications. Tennis bracelets showcase graduated or uniform diamond arrangements in various total carat weights, with engineering focused on secure closures and comfortable articulation for everyday wearability. Pendant designs range from simple solitaires suspended from precious metal chains to elaborate three-dimensional constructions incorporating multiple diamonds in artistic arrangements. Anniversary bands and stackable rings feature diverse diamond configurations including channel, pavé, prong, and bezel settings that complement existing bridal jewelry or stand independently as fashion statements. The Pearl Jewelry section incorporates cultured Akoya, Freshwater, Tahitian, and South Sea varieties in classic strand necklaces, stud earrings, and pendants, often accented with diamond elements that connect these offerings to the company’s primary expertise. Special services within this department include custom matching of new pieces to existing jewelry, remodeling of inherited items into contemporary designs, and creation of coordinated suites for significant celebrations. Throughout all fine jewelry categories, the direct sourcing and in-house manufacturing approach maintains the same value proposition that distinguishes the company’s bridal offerings—exceptional quality at wholesale pricing unavailable through traditional retail channels.
Special Services
#1 Diamond Source offers specialized Gemological Consultation services that transform diamond selection from potentially overwhelming to educational and confidence-building. These personalized sessions with graduate gemologists begin with understanding each client’s specific priorities, whether maximizing visual impact within budget constraints, seeking investment-grade specifications, or balancing various quality factors for optimal value. The consultation includes detailed explanation of GIA and AGS certification standards, interpretation of specific technical terms, and practical demonstration of how different quality grades appear to the naked eye versus magnified examination. For clients unable to visit the New York location, these consultations occur via scheduled phone or video appointments with digital sharing of certification details and magnified diamond images. Particularly valuable is the comparative analysis service where gemologists present multiple stones within a specified budget range, highlighting the visible and technical differences between various combinations of cut, color, clarity, and carat weight. This educational approach helps clients understand how specific characteristics influence both appearance and value, allowing truly informed decisions rather than reliance on arbitrary specifications or emotional sales techniques. The service proves especially valuable for significant purchases where subtle quality distinctions represent substantial price differences, ensuring clients achieve their desired balance between quality, size, and investment level through expert guidance rather than uncertainty or potential post-purchase regret.
The Custom Design and Manufacturing service represents #1 Diamond Source’s distinctive capability to transform client visions into precisely executed fine jewelry through their in-house production facility. This comprehensive service begins with design consultation exploring aesthetic preferences, lifestyle considerations, and specific symbolic elements important to the client. For engagement rings and significant pieces, the process often involves collecting inspiration images, discussing practical wearability factors, and examining metal and setting style samples to refine design direction. Following initial consultation, the design team produces detailed renderings or CAD models that allow clients to visualize and refine the concept before production begins. Once approved, the manufacturing process engages specialized craftspeople handling various production stages including casting, stone setting, and finishing, with direct supervision ensuring quality control throughout. What distinguishes this service from typical custom jewelry offerings is the seamless integration between diamond sourcing and production under single ownership, eliminating the coordination challenges and multiple profit margins typical when designers, diamond dealers, and manufacturers operate as separate entities. This vertical integration enables exceptional quality control while delivering significant value advantages, particularly for complex designs requiring precise coordination between stones and settings. The service includes both creation of entirely original designs and customization of existing styles, with modifications ranging from simple metal changes to comprehensive structural adaptations based on client preferences or practical requirements.
#1 Diamond Source extends their expertise to specialized Diamond Services addressing unique requirements beyond standard retail offerings. The Diamond Re-Cutting service transforms existing stones with proportion issues, damage, or outdated cuts into optimized gems with improved brilliance and value. This service proves particularly valuable for inherited stones with sentimental significance but outdated cutting styles that don’t maximize the diamond’s potential beauty. The Diamond Selling Assistance program helps clients navigate the often-challenging process of selling previously purchased diamonds, providing realistic valuation guidance, accessing wholesale market channels unavailable to individual sellers, and facilitating secure transactions with established industry buyers. For clients seeking documentation of existing jewelry, the Professional Appraisal Service provides detailed evaluation from certified gemologists suitable for insurance, estate planning, or resale purposes, with particular expertise in accurately assessing diamond quality characteristics and current replacement values. Special Acquisition Services locate exceptional stones beyond the standard inventory, including rare fancy colored diamonds, exceptionally large carat weights, or historically significant pieces, leveraging the company’s extensive industry network to source these unusual requests. Corporate Gift Programs provide specialized service for businesses seeking exclusive employee recognition items, client appreciation gifts, or commemorative pieces, with volume pricing advantages and coordination capabilities for distributed recipients. These specialized services demonstrate the depth of expertise available beyond standard retail functions, positioning #1 Diamond Source as a comprehensive diamond resource rather than merely a point of purchase.
Payment Methods
#1 Diamond Source offers comprehensive payment options addressing the specialized financial considerations associated with significant fine jewelry investments. For standard transactions, the company accepts all major credit cards including Visa, MasterCard, American Express, and Discover, with enhanced security protocols appropriate for high-value purchases. Bank wire transfers represent a preferred payment method for substantial transactions, providing immediate fund verification while avoiding credit card processing fees that can be significant on luxury purchases. For clients preferring traditional payment methods, personal checks from established bank accounts are accepted with appropriate verification and clearing periods before merchandise release. Cash payments receive accommodation for in-person transactions at their New York location, though significant cash transactions require appointment scheduling and appropriate documentation to comply with regulatory requirements for large currency transactions. These diverse payment options ensure clients can select methods aligned with their financial preferences, security considerations, and record-keeping requirements for substantial investments like fine diamond jewelry.
Recognizing that fine diamond purchases often represent significant financial commitments, #1 Diamond Source has developed specialized payment programs addressing various client circumstances and preferences. For custom pieces requiring extended production timelines, structured deposit arrangements allow clients to secure specific diamonds with partial payment while the setting is being manufactured, with final payment due before shipping or upon completion. Layaway options accommodate clients preferring to spread payments across defined periods while the merchandise is secured, particularly valuable for those planning purchases aligned with future occasions or financial planning. For qualified clients making exceptional purchases, the company can arrange specialized financing through established luxury goods financing programs or banking partnerships, though they emphasize transparent discussion of carrying costs compared to potential investment returns in these scenarios. International clients benefit from currency conversion capabilities that provide pricing transparency in various denominations, streamlined customs documentation for cross-border transactions, and coordinated payment methods that accommodate different national banking systems. These flexible financial arrangements reflect #1 Diamond Source’s understanding that significant jewelry investments require thoughtful financial planning and transparent terms, creating payment pathways that accommodate diverse circumstances while ensuring business sustainability and appropriate security for high-value transactions.
Access and Accessibility
#1 Diamond Source has developed a distinctive approach to accessibility that balances the security requirements inherent to high-value diamond trading with convenient access for legitimate clients. Their New York Diamond District location operates on an appointment-based model rather than maintaining traditional retail hours with walk-in availability, creating individualized experiences where staff attention focuses exclusively on scheduled clients rather than managing multiple customers simultaneously. This structured approach ensures appropriate security protocols for significant inventory while providing advantages including dedicated expert attention, prepared selections based on pre-consultation requirements, and efficient use of client time through focused presentations rather than general browsing. Appointments remain available during standard business hours Monday through Friday, with special arrangements possible for clients with unique scheduling needs. For those unable to visit Manhattan, comprehensive remote consultation capabilities include phone appointments with dedicated gemologists, secure digital presentation of diamond options including magnified imaging of specific characteristics, and video conferencing that creates interactive selection experiences regardless of client location. These balanced accessibility considerations accommodate the legitimate security concerns associated with valuable merchandise while creating multiple pathways for engagement with their specialized expertise.
Beyond physical and temporal accessibility, #1 Diamond Source addresses broader engagement barriers through information accessibility that empowers clients regardless of prior knowledge or industry expertise. Their comprehensive website serves as both educational resource and shopping platform, with detailed explanations of diamond characteristics, grading standards, and jewelry terminology creating foundational knowledge accessible to all potential clients regardless of background or experience. Technical information receives translation into practical visual impact descriptions, helping clients understand how specific characteristics influence the appearance and performance of diamonds in everyday wear rather than focusing exclusively on certificate specifications. This educational approach extends to their consultation process, where gemologists adjust communication styles based on client familiarity with technical concepts, avoiding industry jargon that might create unnecessary intimidation while still providing substantive guidance. For international clients, staff accommodate various language requirements when possible, with particular capabilities in languages common among diamond purchasers including Mandarin, Russian, Hebrew, and various European languages. These information accessibility considerations transform what could be an intimidating specialty purchase into an approachable, educational experience where clients gain valuable knowledge alongside their diamond acquisition, creating engaged customers rather than passive purchasers dependent entirely on seller guidance.
