There's truly no better feeling for our shopping-obsessed hearts than saving big on an investment piece. Whether you're looking to gift it to your partner for an upcoming anniversary or you're buying it for yourself and future generations, Labor Day might be the most underrated time to buy lab-grown diamonds.

Holden, the jewelry brand crafting their pieces with recycled precious metals and lab-grown diamonds, has a massive Labor Day sale going on right now. September 2 through the 8th, you can save 10% off your entire purchase. At first glance, the discount might sound small... but you're actually saving up to $100 off luxury pieces. 

Trust us, that'll save you big bucks on 14K gold and high-quality ethical diamonds set in everything from rings to tennis bracelets. Lab-grown diamonds have come a long way, and now, they measure up to OG diamonds seamlessly—and you don't have to spend so much! 

We looked through this jewelry Labor Day deal (and more) to get you the best lab-grown diamond pieces on sale starting at under $300, including necklaces, earrings, rings, bracelets, and charms. Keep scrolling to shop our absolute fave finds.

This letter charm features lab-grown diamonds set in 14k yellow, rose, or white gold that goes perfectly with your favorite necklace or bracelet.

Whether worn by itself or paired with your engagement ring, this ring is crafted in 14k, 18k gold, or 950 platinum and set halfway with lab-grown diamonds in a curved band.

These Baguette Diamond Huggies are giving elegance with their stacked lab-grown diamonds, 14k recycled gold base, and a low-profile clicker closure.

Perfect by itself or layered, this necklace has bezel-set lab-grown diamonds and a delicate solid gold chain in 14k yellow, white, or rose gold. 

Whether you're going to the US Open or you simply adore a tennis bracelet, this one features round lab-grown diamonds set in a continuous line, and it's available in a 14k yellow, white, or rose gold band.

If a tennis bracelet feels a little too flashy for everyday wear, grab this Bezel-Set Station style instead. It has just the right amount of shine and a sterling silver chain with 10k gold plating. The best part? It's on major sale right now.

Another fave from my own jewelry box? This Ring Concierge Diamond Bar Bracelet that's simple enough for everyday wear but still delivers the perfect little dose of luxury. 

Pinky rings are everywhere—including at the top of mind. I'm dying for one of my own, and this Duo Diamond Signet feels like such an effortlessly cool way to wear the trend. You can even personalize it with initials or a date.

Every girl dreams of a diamond tennis bracelet and this lab-grown version from Quince? It delivers all the sparkle at a fraction of the cost. Just ask shoppers, who said the "shine is incredible for the price" and has "has ALL the wow-factor."

This Framed Oval Ring is such a fun twist on the classic bezel styling. The off-set diamond feels modern and elevated, and makes a statement whether you're wearing it alone or stacking it with more pieces.

TBH, you can't go wrong with a pair of classic diamond studs, and this pair from Quince? Impossibly chic. It's not a matter of if you're getting them. It's a matter of how many carats are you springing for. 

Looking for more? Shop the vacation-proof jewelry that'll last you beyond your holiday!

The E! Insider Shop editors and writers search the internet to find the best products out there. We interview expert sources, comb through customer reviews, and use our own personal experiences to make shopping easier for our readers.

As an editorial team, we independently create content and determine coverage based on research, reporting and what we think our readers would like to read about. The goal of our content is to provide a service and inform readers who are on the hunt for the latest products to help make their life better. Items are sold by retailer, not E!. Pricing and availability are accurate as of publish time.