2.5 mm Round Lab-Grown Diamond, Loose
Product code: KCR-17921
Quantity
Loose round lab-grown diamond, 2.5 mm, D–F color, VVS clarity, sold per stone. For setting in rings, earrings, pendants or as accents. No individual grading report per stone.
Jewelry details
A 2.5 mm round lab-grown diamond, D to F color, VVS clarity, sold individually. This is the smallest size Thảo Linh sells by the stone, and the most affordable.
2.5 mm is for coverage, not for looking at
Two and a half millimetres is smaller than a ballpoint pen tip. At this size nobody sees individual stones, only a continuous band of light. That's exactly its purpose: covering a ring band, lining the edge of a setting, filling around a center stone, or running along an earring frame so the piece looks less bare.
It's also the most common size for rows running right along an edge, where a larger stone would stick out past the outline.
Buying this size means buying in quantity
A fully paved ring in 2.5 mm stones can need more than a hundred of them. Each stone is inexpensive, but the total adds up, so plan the number you need first, plus a few spares for setting.
Why spares: during setting, small stones occasionally fly off or chip at the edge from the force of pushing the beads. That's normal in the trade at this size, and having a few stones from the same lot on hand means work doesn't stop to wait for more.
How to think about quality at this size
Honestly: at 2.5 mm, D or I color, VVS or SI clarity, can't be told apart with the naked eye, even by people in the trade without a loupe. Thảo Linh still sources D to F and VVS, but the reason is consistent color across a lot when hundreds of stones sit side by side, not because each stone looks different.
So don't pay extra to move up a grade at this size. That money shows far more when spent on the setting work or on the center stone.
Setting and care
Stones this size are held by small gold beads around the edge, not separate prongs. The setter places the stone, pushes the beads over, then checks every stone under a loupe before polishing. It's the most labor-intensive step of a fully set piece, and the one that decides whether stones fall out later.
A fully set piece has many gaps, so lotion and soap build up very quickly, dulling the whole area even though every stone is intact. Wash with warm water and a soft brush, rinse well and dry. Have the beads holding the stones checked every few months, especially on a ring worn on your dominant hand.
