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Engagement Ring Diamond Calculator & 14K/18K Custom Wedding Band Calculator for Couples US, UK, CA

Our Calculator is a dedicated resource designed to guide couples in the United States (US), United Kingdom (UK), and Canada (CA) through the exciting yet often complex process of selecting and budgeting for an engagement ring diamond and crafting custom 14K or 18K gold wedding bands. This tool simplifies financial planning and design considerations, allowing couples to explore options for their most symbolic jewelry pieces. It covers a wide range of natural and lab-grown (CVD/HPHT) diamonds, considering all colors and carat weights suitable for engagement rings (e.g., 0.50 ct to 3.00 ct), and helps estimate costs for various K-gold wedding band designs in yellow, white, or rose gold. The service scenarios focus on empowering couples to make informed decisions together for these once-in-a-lifetime purchases.

Choosing an engagement ring diamond is a significant decision, and our calculator helps couples understand the key factors:

  • The Four Cs in an Engagement Ring Context:
    • Carat Weight: Couples often have a desired size in mind. Our tool helps visualize how carat weight (from charming 0.50 ct stones to impressive 2.00 ct or 3.00 ct+ solitaires) impacts price, allowing for a balance between size preference and budget.
    • Cut Quality: For an engagement ring, which is worn daily and symbolizes love, maximizing sparkle is often a priority. An "Excellent" or "Ideal" cut ensures the diamond (whether Round, Princess, Oval, Cushion, etc.) is breathtaking. The calculator emphasizes the value of a superior cut.
    • Clarity: "Eye-clean" is the goal for most engagement ring diamonds. VS1-SI1 clarity grades often provide this at a better value than flawless grades, as any inclusions are not visible to the naked eye. The calculator demonstrates these price differences.
    • Color: Near-colorless grades (G-J) are popular for engagement rings, appearing beautifully white without the premium of D-F colorless grades. The choice of setting metal (14K/18K yellow, white, or rose gold) can also influence the diamond's perceived color.
  • Diamond Shape: Popular engagement ring shapes include the classic Round Brilliant, the modern Princess, the romantic Cushion, the elegant Oval, and the vintage-inspired Emerald or Asscher. Each shape has a unique personality and price point, which the calculator reflects.
  • Natural vs. Lab-Grown (CVD/HPHT): Couples in the US, UK, and CA have different priorities. Some prefer the tradition of natural diamonds, while others opt for the value and potentially different ethical considerations of lab-grown diamonds. Our calculator provides estimates for both, allowing for an informed choice.
  • Certification: An independent certificate (e.g., from GIA or IGI) is vital for an engagement ring diamond, providing peace of mind and verifying its quality.

The 14K/18K Custom Wedding Band Calculator component is tailored for designing bands that complement the engagement ring and symbolize the union:

  • Gold Choice: 14K vs. 18K:
    • 14K Gold: Highly popular in the US and CA for its durability and affordability, making it excellent for everyday wear. Available in yellow, white, and rose.
    • 18K Gold: Often preferred in the UK and by those desiring a higher gold content for its richer hue and luxurious feel. While slightly softer than 14K, it's still durable for wedding bands.
  • Wedding Band Styles:
    • Classic Bands: Plain gold bands (domed, flat, knife-edge).
    • Diamond-Set Bands: Eternity bands (diamonds all around), half-eternity, channel-set, pavé-set – the calculator estimates costs for adding diamonds.
    • Contoured or Shadow Bands: Designed to fit perfectly against the engagement ring.
    • Engraved or Textured Bands: Adding personalization with milgrain, patterns, or unique finishes.
  • Coordinating Sets: The tool helps estimate costs for "his and hers" or "theirs and theirs" bands, whether matching, complementary, or individually styled. Factors include metal weight, design complexity, and any gemstones.

This calculator is a valuable asset for couples embarking on their wedding journey. Service scenarios include: a UK couple budgeting for a vintage-style 18K engagement ring and matching bands; a US couple exploring lab-grown diamond options for a modern 14K white gold set; or a Canadian couple designing unique, engraved wedding bands. The primary customer is engaged or soon-to-be-engaged couples seeking transparency, education, and control over their bridal jewelry budget and design. It fosters collaboration and confident decision-making for these cherished symbols of commitment.


Diamond Price Calculator (Calculateur de Prix de Diamant)

Estimate the value of a diamond based on its characteristics and market factors. (Estimez la valeur d'un diamant en fonction de ses caractéristiques et des facteurs du marché.)

I. Core Diamond DNA (4Cs + Shape) (ADN Principal du Diamant - 4C + Forme)

Round (Rond) Princess (Princesse) Oval (Ovale) Emerald (Émeraude) Pear (Poire) Marquise (Marquise) Cushion (Coussin) Radiant (Radieux) Asscher (Asscher) Heart (Cœur)
Selected Shape Preview (Aperçu de la Forme Sélectionnée)
Carat Size Visual (Visuel Taille Carat)

II. Detailed Measurements & Proportions (Mesures Détaillées & Proportions)

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III. Advanced Quality Factors (Facteurs de Qualité Avancés)

IV. Certification & Provenance (Certification & Provenance)

V. Diamond Treatments & Features (Traitements & Caractéristiques du Diamant)

VI. Purchase Channel & Market Factors (Canal d'Achat & Facteurs du Marché)

VII. Setting Details (If Applicable) (Détails de la Monture - Si Applicable)

VIII. Estimated Diamond Price (Prix Estimé du Diamant)

Your Estimated Figures (Vos Chiffres Estimés):

Estimated Price Range (Fourchette de Prix Estimée): -

Price Per Carat - Diamond Only (Prix Par Carat - Diamant Seul): -

Confidence Level (Niveau de Confiance): -

Est. Diamond Value (Valeur Estimée du Diamant): -

Est. Setting Value (Valeur Estimée de la Monture): -

Important Disclaimer (Avis Important):

This is a high-level estimation based on generalized market data and the inputs provided. Actual diamond prices can vary significantly based on the specific stone, vendor, market fluctuations, certification accuracy, and other nuanced factors. This estimate does not constitute a formal appraisal or guarantee of value. Always consult with a qualified gemologist or jeweler for precise valuation. (Ceci est une estimation de haut niveau basée sur des données de marché généralisées et les informations fournies. Les prix réels des diamants peuvent varier considérablement en fonction de la pierre spécifique, du vendeur, des fluctuations du marché, de l'exactitude de la certification et d'autres facteurs nuancés. Cette estimation ne constitue pas une évaluation formelle ni une garantie de valeur. Consultez toujours un gemmologue qualifié ou un bijoutier pour une évaluation précise.)

Key Assumptions (Hypothèses Clés):

Prices are for diamonds with characteristics typical for their grades. Unique features or exceptional rarity are not fully factored. Setting value is a rough estimate. Market conditions are assumed to be stable unless specified. The pricing model reflects general market conditions as of mid-2025 and has been adjusted based on typical market valuations. (Les prix concernent des diamants aux caractéristiques typiques de leur catégorie. Les caractéristiques uniques ou une rareté exceptionnelle ne sont pas entièrement prises en compte. La valeur de la monture est une estimation approximative. Les conditions du marché sont supposées stables sauf indication contraire. Le modèle de tarification reflète les conditions générales du marché à la mi-2025 et a été ajusté en fonction des évaluations typiques du marché.)

© Diamond Price Calculator. For illustrative purposes only. (Calculateur de Prix de Diamant. À titre illustratif uniquement.)