best diamond solitaire necklace

The listings show solitaire stones in 0.50 ct and 1.00 ct sizes.

Sterling silver is used for the lab‑grown diamond settings; the cubic zirconia styles are on 14K/18K gold‑plated chains.

The listings include lab‑grown (synthetic) diamonds for the sterling‑silver necklaces and cubic zirconia (CZ) crystals for the gold‑plated styles.

These solitaire listings feature a single stone (one) per pendant, typically round or round‑brilliant in shape.

Lab‑grown diamond necklaces use a cable chain (one listing notes a 1 mm width); the CZ styles are shown on 14K gold‑plated chains.

Lab‑grown solitaires are shown at 0.50 ct and 1.00 ct; the CZ pendants are shown at about 5–6 mm in diameter.