The $150 off promo code at the top of this page is Plum Diamonds's main offer right now, applied when you spend $900 or more on items purchased online. It works best if you are buying multiple pieces or a more expensive single item at or above that $900 threshold.
On a $900 order, the $150 code saves you $150, bringing your total to $750. This is a solid saving for larger purchases and makes sense when you're buying fine jewelry pieces like the Oval Stud Earrings for $1,340 or the Button back stud earrings for $1,840. Since the code cannot be combined with other offers and excludes custom designs, check that your pieces qualify before you redeem it at checkout.
If you're buying the Petals Diamond Hoop Earrings at $2,240, the $150 code takes your total to $2,090. The code still applies here, but the discount becomes smaller as a percentage of your spend. In both cases, the promo code is your best option as long as you clear the $900 minimum and your items fall within the eligible range.
For purchases under $900, the code won't apply. The three individual earring pieces shown are all priced above $1,000, so you are unlikely to fall below the threshold when shopping from Plum Diamonds's current selection, but if you find yourself at a lower order value, you would need to shop at the marked prices without a discount.
In the 12 months to October 2026, our team tested 2 Plum Diamonds codes at checkout, and percentage codes from the brand have been rare: only 1 appeared in that window, with a maximum of 10% off. The $150 fixed discount is a more typical saving at Plum Diamonds in this period, and larger than the average percentage codes the brand has offered.