The Constancia Diamond Tennis Necklace
Fine Jewelry | Made to order
Two rows of round diamonds around the neck — over five hundred stones, more than forty carats, a wide and continuous band of light. The Constancia is the most substantial necklace in the collection, built to be seen.
The Piece
Two parallel rows of round lab-grown diamonds run the length of the necklace, shared prongs carrying both rows in one flexible line. At roughly 4 mm wide it reads as a solid ribbon of diamond rather than a fine thread — a true statement piece that sits close and bright at the throat.
Details
| Product type | Two-row diamond tennis necklace |
| Metal | 14k gold (yellow, white, or rose) |
| Gold weight | Approx. 28.80 g (14k) |
| Diamond origin | Lab-grown |
| Diamond color | E/F |
| Diamond clarity | VS |
| Diamond shape | Round brilliant |
| Rows | Two |
| Diamond quantity | Approx. 514 |
| Total diamond weight | Approx. 41.12 ct |
| Diamond size | Approx. 2.70 mm each |
| Setting | Shared-prong, two-row tennis |
The Diamonds
Around five hundred and fourteen round brilliant lab-grown diamonds, each about 2.70 millimetres, set in two rows for approximately 41.12 carats in total, all selected in E/F color and VS clarity — near-colorless and eye-clean. The exact count varies slightly with the length chosen.
Read more: Lab-Grown and Mined Diamonds: The Material Difference
The Gold
The necklace is made in 14k gold, with an approximate gold weight of 28.80 grams — the structure needed to carry two rows of diamond in one flexible line.
Read more: Gold, Explained: Why Alva Works in 14k
Dimensions
Available in two lengths: 15 inches plus a 1-inch extension, or 16 inches plus a 1-inch extension · Width: approx. 4.00 mm at the diamond line. Stone count and total carat vary slightly with the length chosen. Figures shown are approximate.
Why This Piece
A single-row tennis necklace is fine and everyday. Doubling the row turns the same idea into a statement — twice the light across the collarbone, in a ribbon of diamond made for the occasions that ask for it.
Designed to Be Lived In
Every Alva piece is made by hand in 14k gold and lab-grown diamonds, and made to order after you place it. It is measured by the years of wear ahead of it, not the moment it was bought.
Care
What's good is worn, not kept safe. A softened edge or a faint scratch is not damage; it is evidence of a life lived in it.
| Wearing it | Put it on last, after lotion and perfume have dried. Take it off first, before swimming, heavy exercise, or exposure to household chemicals. |
| Cleaning it | Clean with warm water, mild dish soap, and a soft-bristled brush. Rinse and dry with a soft cloth. Skip ultrasonic cleaners on delicate settings and abrasive polishes altogether. |
| Storing it | Store separately so metal does not scratch metal. |
| Professional care | Have the setting checked once a year. White gold may need replating every few years; yellow and rose gold simply deepen in color instead. |
For anything beyond routine care, Alva is reachable directly at customercare@alvafinejewelry.com
Cared for simply, a piece settles further into a life, and the mark it takes on becomes part of what it is worth.
Shipping
Ready-to-ship pieces are processed within 3 business days. Made-to-order pieces ship within 2–3 weeks. You’ll receive tracking once your order ships.
Shipping worldwide. International orders (outside the US) may incur import duties and taxes, set by your country and payable on delivery.
Returns and Refund
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