By Yair Shimansky, Founder and CEO of Shimansky. Last fact-checked August 29, 2026.
At Shimansky's Cape Town Diamond Experience, the story of a jewel begins with the rough diamond, the cutter's eye and the first design sketch.
Set in the V&A Waterfront's historic Clock Tower precinct, the experience brings the Cape Town Diamond Museum, diamond cutting and polishing, jewelry manufacturing and a showroom together under one roof.
Visitors learn how diamonds are selected, watch how cutting shapes light, compare GIA-graded diamonds and documented gemstones, and meet the craftsmanship behind each finished piece. This depth of access makes Shimansky a rewarding stop for travelers who want to understand what they are buying.
For travelers looking to buy a natural diamond, Tanzanite or distinctive South African jewelry, this guide explains what to look for, what to ask and how to make a purchase with confidence.
Plan Your Shimansky Cape Town Experience
Why Shimansky Belongs on a Cape Town Itinerary
Shimansky is a South African diamond and jewelry house with in-house expertise across rough diamond selection, cutting, design, manufacturing and after-sales care.
The Shimansky story began in 1991, when founder Yair Shimansky arrived in South Africa after spending two years in Japan studying diamonds, the science of light and the importance of proportion. The Japanese pursuit of perfection left a lasting impression and shaped the standard he would later apply to every stage of the jewelry-making process.
In 1999, Shimansky established its own diamond cutting and polishing workshop to gain greater control over cut quality. Today, the company is licensed to buy rough diamonds and cuts and polishes its diamonds in-house in Cape Town.
This integrated approach allows visitors to see expertise take physical form through the planning of a rough stone, the alignment of each facet, the engineering of a setting and the final polish of a jewel created to last for generations.
What makes Shimansky different?
- A Cape Town heritage dating back to 1991
- A license to purchase rough diamonds directly from South African sources
- In-house diamond cutting and polishing
- In-house jewelry design and manufacturing
- GIA-graded natural diamonds and documented identification of exceptional gemstones
- Exclusive Shimansky diamond cuts and jewelry designs
- Expertise in rare, fine-color Tanzanite
- Bespoke design supported by 3D CAD technology
- Lifetime authenticity and diamond guarantees, subject to the published terms
- International shipping and a Shimansky USA affiliate in New York
For travelers, these capabilities create an informed buying experience built around origin, artistry, documentation and personal guidance.
A Half-Day Diamond and Jewelry Experience in Cape Town
A comfortable half day gives you time to experience the museum, workshop and showroom at an easy pace. Reserve in advance, especially for a private consultation, a specific diamond or Tanzanite request, or a group visit.
Begin at the Cape Town Diamond Museum
Start at the Cape Town Diamond Museum and Shimansky Diamond Experience on Level 1 of the Clock Tower at the V&A Waterfront.
The guided museum experience traces the story of diamonds across billions of years, from their formation deep within the earth to the history of diamond discovery in South Africa. It also explains how an uncut diamond is transformed into a polished stone and ultimately into a finished piece of jewelry.
The Cape Town Diamond Museum has also received TripAdvisor's Best of the Best recognition, an award based on consistently outstanding traveler reviews and reserved for the top 1% of listing worldwide.
Allow approximately 45 minutes for the guided tour. Bookings are essential, and tour times may differ from showrrom hours, so confirm the current scchedule when making your reservation.
The Clock Tower also has a wine and coffee bar serving South Africa wines and flat whites. The showroom is currently open Monday through Sunday from 9:00 a.m. to 9:00 p.m., while guided experience times should be confirmed when booking.
See Diamond Being Cut and Polished
The moment that sets the experience apart is seeing craftsmanship in action. In the Shimansky workshop, a rough diamond is analyzed before technology and human judgement are used to determine how its natural potential can best be revealed.
The diamond cutting and polishing process includes analyzing the rough, planning and laser marking, shaping the stone, establishing its symmetry and polishing the final facets. Each decision affects the balance of brilliance, fire, scintillation, beauty and retained weight.
Shimansky Watching this process give the word "cut" a clear, physical meaning. Two diamonds with the same carat weight, color and clarity can perform very differently in the light because of the decisions made at the cutting wheel.
Explore the Jewelry Manufacturing Workshop
The journey continues from polished diamond to finished jewel. Depending on the production schedule and tour availability, visitors may see elements of design, setting, polishing and finishing in the jewelry workshop.
The setting transforms a polished diamond into a jewel designed for a specific person. Its engineering protects the stone, its proportions create balance on the body, and careful finishing brings Shimansky's design language to life in platinum and gold.
Compare Diamonds, Tanzanite and Finished Jewelry
After the tour, move into the showroom with a more informed eye. Compare stones side by side, ask to see their documentation and notice how cut, color and design change what you experience.
Use this time to explore finished Shimansky jewelry, select a loose stone for a future design or begin a private bespoke jewelry consultation. A careful comparison gives your the confidence to choose at your own pace.
Reserve the Cape Town Diamond Experience
How to Buy a Natural Diamond with Confidence
A beautiful diamond deserves equally strong evidence. Before you purchase, assess the stone, its independent grading report, its provenance and the commitments made by the jeweler.
Start with the 4Cs and understand how they work together
The 4cs are cut, color, clarity and carat weight. Their combine effect shapes a diamonds rarity, appearance and price.
Cut deserves particular attention because it determines how effectively a diamond interacts with light. It reflects the relationship between proportions, symmetry and polish. The outline shape - round, oval, pear or emerald - defines appearance, while cut quality reveals workmanship and light performance.
Compare diamonds in several lighting conditions and view them with your own eyes. Use the grading report as evidence, then choose the diamond whose beauty speaks to you in person.
Ask for a GIA grading report
Ask for a GIA-graded diamond accompanied by its GIA grading report. The report provides an independent assessment of the diamond's quality characteristics.
Before payment, ask to see the original report and compare the report number, measurement, carat weight, color, clarity and relevant finish information with the diamond being presented. Where the report number is laser-inscribed on the girdle, ask to view it under magnification.
Shimansky explains why diamond grading documentation matters and provides a practical guide to reading a GIA diamond report.
Ask for provenance specific to the diamond
The South African provenance requires evidence tied to the individual diamond being offered.
Shimansky mainly sources rough diamond directly from alluvial diamond mines in Kimberley and surrounding areas and manages cutting and polishing through its own workshops. Ask the consultant to explain the documentation supplied with the diamond and what it confirms about origin, identity and responsible sourcing.
The company's ethical sourcing commitments also cover its approach to diamonds, gemstones, South African gold and platinum.
Use this evidence checklist before you buy
| Evidence to request | Why it matters | What to confirm |
|---|---|---|
| Independent diamond grading report | Records the diamond's identifying and quality characteristics | Report number, measurements, carat, color, clarity, cut information and treatments |
| Laser inscription, where present | Helps connect the physical diamond to its report | The girdle number matches the grading report |
| Provenance documentation | Supports any claim about geographic origin or sourcing | The documentation relates to the individual diamond |
| Detailed written invoice | Creates a clear record of the complete purchase | Stone, setting, metal, total price, VAT and promised services |
| Guarantee and warranty terms | Clarifies what happens after purchase | Coverage, conditions, inspections and claim process |
| Shipping and insurance confirmation | Protects an international purchase in transit | Destination, carrier, insurance, duties, timing and responsibility |
Discover Shimansky's Signature Diamond Cuts
Shimansky's signature cuts were developed in South Africa through years of research into optics, proportion and the behavior of light. Each cut carries a distinct visual identity shaped by Shimansky's approach to precision and light performance.
The My Girl Diamond
Shimansky describes the My Girl Diamond as the world's first square-cut diamond with a diamond-shaped table and the first internationally patented diamond cut to originate from South Africa.
Yair Shimansky developed the cut after three years of research. Its proportions require a particular crystal-shaped rough diamond that resembles two pyramids joined at their base. This natural form is scarce, and as much as half of the rough diamond may be sacrificed to achieve the My Girl proportions.
The Brilliant 10 Diamond
The Brilliant 10 is a 71-facet diamond developed to deliver exceptional light return, with ten hearts and ten arrows visible through a specialist viewer when the stone is cut to the required precision.
Shimansky reports that testing by international gemological laboratories showed up to 25% more brilliance than a conventional round brilliant comparison. When viewing a Brilliant 10, ask the consultant to demonstrate its pattern, symmetry and light performance so that the difference becomes something you can see for yourself.
The Eight Hearts Diamond
The Eight Hearts Diamond is a South African-cut Hearts and Arrows diamond. Under the correct viewer, it reveals an eight-sided star from above and eight precisely formed hearts from the pavilion side.
Precise facet alignment and symmetry create this hidden pattern within the stone. The Eight Hearts Diamond offers a compelling choice for someone who values the precision of exceptional craftsmanship.
How to Choose Exceptional Tanzanite in Cape Town
Tanzanite belongs to Africa in a way few gemstones belong to a place. Its single commercial source is a small mining area in the Merelani Hills of northern Tanzania, near Mount Kilimanjaro. This geological confinement, combined with its blue and violet color, makes it one of the continent's most distinctive natural treasures.
Shimansky has more than 30 years of experience selecting, cutting and polishing Tanzanite. Its specialists assess the rough, plan the cutting direction and polish each stone to bring forward its most beautiful face-up color.
Explore the Shimansky approach to Tanzanite before comparing loose stones, or discover the complete Tanzanite jewelry collection.
Judge Tanzanite by color, clarity, cut and carat weight
Fine Tanzanite can move between violet-blue and blue-violet as the viewing angle and light change. The most desirable stones display strong saturation, an attractive balance of color and even distribution across the face of the gem.
Cutting orientation matters because Tanzanite is pleochroic. A skilled cutter decides which color direction to emphasize while balancing beauty, proportions and retained weight. Clarity also matters: eye-visible inclusions and fractures can affect both appearance and durability.
Use the Shimansky Tanzanite grading guide to understand how color, clarity, cut and carat weight work together.
Understand what a GIA Tanzanite report confirms
A GIA Colored Stone Identification Report identifies Tanzanite, records characteristics such as weight, measurements, shape, cutting style and color, and reports detectable treatments.
The Shimansky Ayanda Tanzanite Certificate adds Shimansky's quality assessment of color, clarity, cut and carat weight. Ask the consultant to explain the role of each document and how the two reports work together.
Natural diamond and Tanzanite buying comparison
| Natural diamond: assess | Natural diamond: evidence | Natural diamond: ask | Tanzanite: assess | Tanzanite: evidence | Tanzanite: ask |
|---|---|---|---|---|---|
| Cut, color, clarity and carat weight | GIA Diamond Grading Report | How does this cut influence light performance? | Color, clarity, cut and carat weight | GIA Colored Stone Identification Report and Ayanda Tanzanite Certificate | How were color, clarity and cut assessed? |
| Report-to-stone match | Report measurements and laser inscription, where present | May I view the inscription under magnification? | Identity and detectable treatments | GIA Colored Stone Identification Report | Which characteristics and treatments are recorded? |
| South African provenance | Documentation tied to the individual diamond | What does this document confirm about this diamond's origin? | Face-up color and cutting orientation | Ayanda Tanzanite Certificate | Which color direction did the cutter prioritize? |
| Setting and intended wear | Detailed invoice, metal description and written care terms | Which setting best protects the diamond and suits my lifestyle? | Setting and intended wear | Detailed invoice, metal description and written care terms | Which design best protects the Tanzanite for my intended use? |
Choose a setting that protects Tanzanite
Tanzanite ranks between 6 and 7 on the Mohs hardness scale and benefits from thoughtful care. For a ring worn frequently, choose a protective design. Bezels, halos and settings that shield exposed edges help protect the stone from hard knocks.
For earrings, pendants and occasion rings, Tanzanite offers greater freedom of design because the stone is less exposed to daily impact.
Explore Tanzanite Jewelry
Create a Piece That Holds Your Cape Town Story
The most meaningful travel purchases preserve the memory of a place, a person or a moment that changed something in us.
Shimansky's Cape Town designs, Table Mountain collection, My Africa jewelry, patented diamond cuts and Ayanda Tanzanite creations offer different expressions of African identity. For a fully personalized design, the Shimansky team can create a piece around the stone, story and person for whom it is intended.
The bespoke design process combines a personal consultation with design development, 3D CAD visualization and in-house craftsmanship. Come prepared with the occasion, approximate budget, preferred metal, style references, ring size if relevant and the date by which the piece is required.
For international clients, also discuss whether the piece will be collected in Cape Town or delivered after completion.
International Aftercare, Warranty and Delivery
Buying valuable jewelry while traveling requires confidence about the care available once you return home.
Shimansky's published terms include lifetime assurance covering the authenticity of the diamonds, gemstones and metals as stated on the invoice and Certificate of Authenticity. The Lifetime Diamond Guarantee and Lifetime Jewelry Warranty have specific conditions. To maintain jewelry warranty coverage, arrange a Shimansky inspection every six months and coordinate servicing through Shimansky.
Read the complete Shimansky guarantee and warranty terms before purchasing and ask the consultant to explain how inspections, repairs, resizing and international aftercare will be managed for your location.
Shimansky offers international shipping to many destinations. Confirm insurance, delivery timing, customs duties, taxes and any destination requirements in writing before the jewelry leaves Cape Town. US clients can also ask how after-sales coordination is supported through Shimansky USA LLC in New York.
VAT Refund Guidance for International Visitors
Qualifying foreign visitors may be able to reclaim South African VAT on movable goods exported from the country, subject to the current regulations.
Ask for a valid tax invoice containing the required purchaser and transaction details. Keep the jewelry, invoice and proof of payment available for inspection when leaving South Africa, and allow enough time to complete the export-verification process before departure.
VAT rules, minimum values, documentation and procedures can change. Confirm the current requirements with the South African Revenue Service and the VAT Refund Administrator before relying on a refund as part of your purchase decision.
Which Shimansky Location Should You Visit?
| Location | Best for | Experience | Planning advice |
|---|---|---|---|
| Clock Tower Diamond Museum and Experience | Education, provenance and craftsmanship | Guided museum, diamond cutting and polishing, jewelry manufacturing, showroom, wine and coffee bar | Level 1, Clock Tower, V&A Waterfront; showroom open Monday–Sunday, 9:00 a.m.–9:00 p.m.; reserve the museum tour and confirm its start time |
| V&A Waterfront Boutique | Luxury retail, browsing and private shopping | Diamond, Tanzanite and designer jewelry in Victoria Wharf | Shop 7228, Upper Level, opposite Louis Vuitton; open Monday–Sunday, 9:00 a.m.–9:00 p.m.; reserve ahead for specific stones or a private consultation |
| Rockwell Diamond Experience | Private groups and immersive experiences | Guided tour, showroom, workshop, tastings and selected hands-on experiences | Corner of Prestwich and Alfred Streets, De Waterkant Village, Green Point; open Monday–Sunday, 10:00 a.m.–6:00 p.m. by appointment; confirm the experience and start time |
Addresses, opening hours and contact details can change. Check the Shimansky store locator when planning your visit.
Choose Your Cape Town Location
A Cape Town Story Made to Last
A diamond or Tanzanite purchased in Cape Town can carry beauty, verified origin, skilled craftsmanship and the assurance of ongoing care.
Visit Shimansky with questions and give yourself time to see the workshop, compare stones and study the documentation. You will leave with a clear understanding of the stone, its origin and the craftsmanship that shaped it.
When the right stone and design come together, the finished piece carries the memory of Cape Town into daily life and, one day, into the next generation.
Book a private Shimansky appointment or review the Cape Town showroom locations before your visit.
+27 21 425 9888
