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Round Brilliant Cut Solitaire Loose Diamond .17ctw
Round Brilliant Cut Solitaire Loose Diamond .17ctw
−49%
Jewelry · Peter's Vault

A tiny solitaire sparkler waiting for the perfect setting

Round Brilliant Cut Solitaire Loose Diamond .17ctw

A round brilliant loose diamond for anyone building a delicate ring or adding a little fire to an existing piece.

Deal score 6.0 · Great deal
$177.00$350.00 Peter's Vault's regular price

You save $173.00 at Peter's Vault

Checking it's still available…

Why it's a great deal

  • Peter's Vault lists its regular price at $350.00: 49% off by its own figures
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Every store we checked

  • Peter's VaultNew

    In stock

    $177.00Observed at 8:42 AM
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Price history and every store's price →

From Peter's Vault

  • 3.5mm in diameter
  • Graded conservatively at VS-SI clarity with I/J color
  • Good solid cut with fire and brilliance
  • Perfect for a promise ring or pendant
  • Sourced from an estate lot of loose diamonds
Fit
3.5mm in diameter
Guarantee
100% Guaranteed replacement service or refund if returned within 28 days of purchase in original condition and packaging; can also exchange for a higher-value i
Returns
Returns accepted within 30 days; item must be unused, in the same condition received, in original packaging, with receipt or proof of purchase; refund processed
Shipping
Free U.S. shipping; free 2nd Day Shipping; free no hassle returns.

About the Round Brilliant Cut Solitaire Loose Diamond .17ctw

This is a single loose round brilliant diamond of about .17 carat total weight, roughly 3.5mm across. It is graded conservatively at VS-SI clarity and I/J color, with a good solid cut. Peter's Vault lists it at $177 as of November 5, 2026, the only new price it has. That is a modest sum for a certified-grade loose stone of this size, so the price is in line with what small estate diamonds cost.

Best forA promise ring or pendant settingA small accent stone for a repair or resetBuyers who want a real diamond on a tight budgetJewelers sourcing a single small stone
Pros
  • VS-SI clarity and I/J color are honest, usable grades for the size
  • 3.5mm fits standard small settings and pendants
  • Round brilliant cut gives fire and brilliance
  • Loose stone lets you choose your own setting
  • Estate-lot sourcing keeps the price low at $177
Cons

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.17ctw is small and reads subtle in a ring
  • I/J color shows warmth against white metal
  • No lab report mentioned, so grades are the seller's word
  • Loose stones need a setting, which adds cost
  • Single stone only, not a matched pair

    • Questions and answers

    Is $177 a fair price for a .17ct loose diamond?
    Yes, for a VS-SI, I/J round brilliant of this size it is a typical price. Comparable small estate stones sell in the same range. The value depends on the cut you see in person.
    Is this diamond big enough for an engagement ring?
    At 3.5mm it is small for an engagement center stone. It works better as a promise ring, a pendant, or a side stone next to a larger center.
    Does it come with a grading report?
    No lab report is mentioned. The VS-SI clarity and I/J color are the seller's conservative grades, so have a jeweler confirm them before setting.
    What setting will a 3.5mm stone fit?
    It fits standard settings made for roughly 3.5mm round stones, including many solitaire pendants and small ring mountings. Confirm the exact millimeter size with your jeweler.
    Can I return it if the color looks warmer than expected?
    That depends on Peter's Vault's return policy, which is not stated here. Ask the store before buying, since loose stones are often final sale.