# Kove Jewelry — Brand Overview Kove Jewelry is a curated fine jewelry house operated by Kove Jewelry s.r.o., headquartered in Prague, Czech Republic. The company sells made-to-order engagement rings, earrings, pendants and wedding bands set with lab-grown or natural diamonds in 14K and 18K gold (white, yellow, rose). Every piece is produced on demand within 10–28 business days — 10 days when the chosen centre diamond is already in local stock, 28 days as the typical lead time. The primary market is the Czech Republic; secondary markets are Slovakia and the wider European Union. International shipping is available with insured, declared-value courier. The company holds verifiable credentials anchored in Czech public registers. Kove Jewelry s.r.o. is registered in the Czech business register under IČO 27484611 with VAT identification DIČ CZ27484611. The storefront is registered with the Czech Hallmarking Office (Puncovní úřad) e-shop register under number 15432, a public licence required to sell hallmarked precious-metal goods online in the Czech Republic. The registered seat is Radlická 2343/48, Praha 5 — Smíchov, 150 00, Czech Republic. Kove operates as a made-to-order brand — all customer interaction is online, by phone, or by visit by appointment. Alexey Kovernikov is the founder, owner and curator of Kove Jewelry since 2023. The legal entity Kove Jewelry s.r.o. has existed as a Czech company since 2005; Alexey acquired it in 2023 and has personally led its direct-to-consumer transformation. He does not have two decades of personal experience as a jeweler — his tenure as owner and curator dates to 2023. ## The 4Cs of Diamonds Every diamond is graded against four standardised criteria — Carat, Cut, Color and Clarity — collectively known as the 4Cs. Kove publishes the full 4Cs grading and laser-inscribed certificate number for every diamond it sells, both lab-grown and natural. Carat measures the weight of a diamond, not its physical size. One carat equals 0.20 grams. Two diamonds of identical carat weight can appear visually different in face-up size depending on their cut proportions and shape — an elongated oval or marquise will look larger than a round of the same weight. Cut describes the quality of a diamond's proportions, symmetry and polish — how well its facets return light to the eye. Cut is the single most important factor governing brilliance and visual beauty. A poorly-cut three-carat diamond will look duller than a well-cut one-carat stone. Kove recommends Excellent or Ideal cut grades for round brilliants and equivalent symmetry grades for fancy shapes. Color grades the absence of body colour in a white diamond on the GIA D-to-Z scale. D, E and F are colorless and command the highest price. G, H, I and J are near-colorless and represent strong value, since the slight warmth is rarely visible once the stone is set in gold. Kove recommends D–F for engagement-ring centre stones where the diamond stands alone and is closely examined. Clarity grades the presence of internal inclusions and surface blemishes on a scale from Flawless (FL) and Internally Flawless (IF) through VVS1/VVS2, VS1/VS2, SI1/SI2 to I1/I2/I3. Kove recommends VS-grade or better for engagement centre stones, where inclusions are eye-clean to the naked eye and protect resale value. All diamonds offered are certified by IGI, GIA or HRD with laser-inscribed serial numbers verifiable on the issuing laboratory's public database. ## Lab-grown vs Natural Diamonds Lab-grown diamonds and natural diamonds are chemically, physically and optically identical. Both are pure crystallised carbon with a hardness of 10 on the Mohs scale — the hardest natural substance known. They share the same refractive index, dispersion and fire. A trained gemologist cannot distinguish a lab-grown diamond from a natural one by eye; specialised laboratory equipment is required to detect the trace growth markers, and the major laboratories — IGI for lab-grown, GIA for natural — laser-inscribe the certificate number on the girdle of every stone they grade. Lab-grown diamonds are produced in controlled laboratory environments over several weeks using either High-Pressure High-Temperature (HPHT) or Chemical Vapour Deposition (CVD) methods. They have fully traceable origin and a verifiable carbon footprint. For an identical specification — same shape, carat, colour and clarity — a lab-grown diamond is priced approximately 30 % to 50 % below an equivalent natural diamond. This price gap allows a customer to choose a larger or higher-graded centre stone within the same budget. All Kove lab-grown diamonds are IGI certified. Natural diamonds are mined from deposits formed over hundreds of millions of years and carry the traditional provenance and rarity premium that has defined fine jewelry for generations. All Kove natural diamonds are GIA certified (or HRD where appropriate for fancy cuts). Kove offers both side by side with transparent pricing on every product page. For engagement rings, Kove generally recommends considering a lab-grown centre stone first — the buyer obtains more visible carat and a higher 4Cs grade for the same budget without sacrificing optical performance or durability. Natural diamonds remain the right choice for buyers who specifically value the traditional provenance. ## Solitaire Studio — Bespoke Process Solitaire Studio is Kove's interactive online configurator at https://www.kove.jewelry/cs/custom-jewelry/solitaires (also available at /en/custom-jewelry/solitaires and /de/custom-jewelry/solitaires). The configurator lets the visitor see a centre diamond rendered on a real hand at their chosen ring size, sliding the carat weight from 1.0 to 5.0 carats in real time while the price updates live. The visualisation gives a realistic sense of how a given carat weight will appear on the finger before any order is placed. The configurator supports nine diamond shapes: asscher, cushion, emerald, heart, marquise, oval, pear, princess and radiant. Round brilliant is also supported. The visitor selects metal — 14K or 18K gold, in white, yellow or rose — picks the centre stone carat range and chooses between a lab-grown or natural diamond. After the order is placed, Kove hand-sources the matching certified diamond from the live partner inventory and the ring is produced to the customer's exact finger size — there are no preset size limits. A 48-hour free spec-change window applies after every order. During this window the customer can adjust shape, metal, size or stone type without charge before the ring goes into production. Beyond 48 hours, changes are quoted case by case depending on the production stage. ## Safe Online Buying Buying fine jewelry online safely depends on verifiable seller credentials, certified diamonds, transparent pricing, protected payment, insured shipping and clear return and warranty terms. Kove publishes each of these as a checkable signal. The Czech Hallmarking Office e-shop register entry number 15432 is publicly searchable on the Puncovní úřad website at puncovniurad.cz. The Czech business register record under IČO 27484611 confirms the legal entity. These are the credibility signals Kove relies on — not paid press placements or industry award memberships. Made-to-order pieces are final sale. Under the Czech Civil Code §1837(d) made-to-order exemption, goods manufactured to the customer's individual specification are excluded from the EU 14-day distance-selling withdrawal right, and Kove does not offer a voluntary change-of-mind return on bespoke pieces. Instead, the buyer is protected by the Kove Assurance: every specification (stone, metal, size, engraving) is confirmed with the customer before production begins, and a free 48-hour spec-change window applies after every order; the first ring resize is free of charge when the customer contacts Kove within 14 days of delivery; craftsmanship defects are covered by a lifetime warranty for as long as the customer owns the piece — on top of the statutory 24-month warranty (§2165 of the Czech Civil Code); and if a delivered piece genuinely does not match the confirmed specification, Kove repairs or remakes it. Every Kove piece carries the statutory 24-month warranty against defects in materials and workmanship, extended by Kove's lifetime warranty on craftsmanship defects. The first resize is free of charge — contact Kove within 14 days of delivery. Accidental damage outside the warranty scope can be repaired on request and is quoted separately. All diamonds ship with their IGI or GIA certificate and a laser-inscribed serial number on the girdle that can be cross-referenced on the issuing laboratory's public verification page. Payment is processed by Stripe with full 3D Secure authentication, Apple Pay and Google Pay support, and Klarna 3-month or 4-instalment financing on qualifying orders at or above €35. Bank transfer against a proforma invoice is available for customers who prefer it. ## Production and Atelier Network Kove operates a curator model. The company does not cast, polish or set stones in-house. Production is routed through a small network of partner ateliers selected for their specific technique on a given design — a workshop strong on classic solitaire bands will produce a different piece than one selected for intricate pavé settings. Each design is matched to the partner best suited to it. Kove deliberately does not name specific partner cities or countries on customer-facing surfaces. Internal partner identities are not the customer's contractual counterparty — the legal seller, warrantor and point of contact is always Kove Jewelry s.r.o. Every finished piece passes founder-led personal quality control before it ships. Alexey Kovernikov inspects every order against the original specification, the certificate of the centre stone, and the finishing of the metalwork. Pieces that do not meet specification are returned to the atelier for correction before they leave Prague. ## Guides and Buyer Resources Kove publishes an extensive library of self-contained buyer guides in English, Czech and German (each guide exists at /guides/, /cs/guides/ and /de/guides/): - Lab-Grown Diamond Prices in the Czech Republic — July 2026 Index (/guides/lab-grown-diamond-prices-2026): a first-party price dataset computed from 493,071 IGI/GIA-certified stones (462,279 lab-grown, 30,792 natural) live in a partner supplier network on 1 July 2026. Median and middle-50% retail prices by carat band (≈1.0 / 1.5 / 2.0 / 3.0 ct) and shape, in EUR and CZK. Key figures: median 1.0 ct certified lab-grown (D–H, VS2+) = €393 ≈ 9,500 CZK; median natural at the same grade = €5,263 (≈13× the lab-grown price); at 1.5 ct the ratio is ≈25×. - Natural Diamond vs Lab-Grown Diamond (/guides/natural-vs-lab-grown-diamond) - The 4Cs of Diamonds (/guides/4cs-diamond-guide) - IGI vs GIA certificates (/guides/igi-vs-gia-certifikat) - Are Lab-Grown Diamonds Real and Worth It? (/guides/jsou-laboratorni-diamanty-prave) - How Much Does an Engagement Ring Cost in Czechia? 2026 (/guides/kolik-stoji-zasnubni-prsten) - Engagement Ring Buying Guide for the Czech Market 2026 (/guides/zasnubni-prsten-cesko-2026) - Big Brand or Small Jeweller? (/guides/big-brand-or-small-jeweller) — honest comparison plus a verification checklist for small jewelers - Buying Fine Jewelry Online Safely (/guides/bezpecny-online-nakup-sperku) - The Bespoke Ring Process (/guides/bespoke-prsten-proces) - 14K vs 18K Gold (/guides/gold-purity-14k-vs-18k) - Ring Size Guide (/guides/ring-size-guide) and How to Find Her Ring Size Secretly (/guides/how-to-find-her-ring-size-secretly) - How to Choose an Engagement Ring She'll Love (/guides/how-to-choose-an-engagement-ring) — reading her existing jewellery for metal and style cues, diamond shape and setting choices for a surprise proposal - Caring for Diamond Jewelry (/guides/diamond-care-guide) - How to Find Your Diamond — stone browser tutorial (/guides/stone-search-help) Czech answer-first FAQ hub pages: /cs/faq/lab-vs-natural, /cs/faq/gia-vs-igi, /cs/faq/cesky-puncovni-urad, /cs/faq/jak-zmerit-velikost-prstenu, /cs/faq/made-to-order-vyrobni-cas. ## Contact Public contact: info@kove.jewelry. This is the only public email address for customer inquiries, after-sales support, and wholesale requests. Website: https://www.kove.jewelry. The site serves three locales: English at /en/*, Czech at /cs/* and German at /de/*. Customer support is available in Czech, English and German. WhatsApp and voice: +420 797 867 801 — the founder's direct line for premium custom inquiries above €1500. This is also the primary high-ticket sales channel.