Ovals Fell 23% While Every Step Cut Surged

Oval diamonds dropped 23.47% in a single week. Across 446,099 active listings, the median oval settled at $900, making it the cheapest popular fancy shape on the market. Princess cut diamonds surged 71.23% in the same window. Emeralds gained nearly 46%. Asschers climbed 19%. A shape divergence this sharp is genuinely significant, and the week ending April 13, 2026 produced one of the clearest buying windows we tracked all year.

Five shapes, five different weeks

The scale of the divergence only becomes clear when you line the numbers up.

Shape	Listings	Median Price	Weekly Change
Oval	446,099	$900	-23.5%
Princess	78,351	$1,000	+71.2%
Emerald	186,338	$1,219	+46.0%
Asscher	32,102	$1,402	+19.0%
Trillion	1,005	$776	-21.3%

At $900, ovals sat below princess, well below emerald, and a full $500 under asscher. Ovals have historically traded at or above princess on a per carat basis. That relationship inverted. Trillions also fell, but with only 1,005 listings, that movement was too thin to draw conclusions from.

The gap between ovals and step cuts was the real story. A buyer choosing between an oval and an emerald of comparable carat and specification would have paid a $319 premium for the emerald. A month earlier, that gap was negligible.

Too many ovals, not enough buyers

Popularity works both ways. Ovals are the most produced fancy shape by a wide margin, particularly in the lab-grown segment. When production accelerates, ovals absorb the bulk of new supply. And lab-grown supply absolutely accelerated.

Metric	Natural	Lab-Grown
Total Listings	571,138	1,842,891
Average Price	$1,502.94	$856.00
Weekly Price Change	-1.77%	+18.40%
Weekly Supply Change	-14.51%	+65.94%

Lab-grown listings grew 65.94% in a single week. That wasn't organic growth. It was a supply wave, driven by new inventory entering the platform from expanding retailer coverage and grower output catching up with capacity investments from 2025. Natural supply contracted 14.51%, suggesting natural dealers pulled inventory as prices softened. A defensive move that limited natural's downside.

With 1.84 million lab-grown listings versus 571,000 natural, the market had tilted decisively. Lab-grown outnumbered natural more than three to one. For ovals specifically, the ratio was likely even more skewed. Lab-grown production gravitates toward shapes that maximise yield from the CVD or HPHT growth process, and ovals, with their efficient use of rough material, are the default for most growers. When lab-grown supply expands, ovals feel it first and hardest.

The lab-grown average price actually rose 18.4% despite the flood. Counterintuitive, but the mix shifted: more retailers listing higher specification lab-grown stones pulled the average up even as volume expanded. The median told a different story. Ovals, which dominate lab-grown production, fell hard.

Everyone wanted an emerald instead

While ovals corrected, every major step cut climbed. Princess led with a 71.23% surge, the week's strongest performer by a wide margin. Emerald gained 45.99% across 186,338 listings, a dataset large enough to trust. Asscher rose a more modest 19.03%.

Step cuts have always attracted more selective buyers. They don't hide flaws the way brilliant cuts do, so people who choose them tend to be particular about specifications. That selectivity creates natural price support. But the week's moves went beyond normal premiums.

Part of the story was substitution. As oval prices softened and supply flooded, retailers promoted step cuts more aggressively, shifting demand toward shapes with tighter supply. Princess and emerald also benefit from a perception shift in a market saturated with ovals. When every second engagement ring features an oval, the emerald cut starts to look interesting.

Step cuts also carry a clarity advantage that reinforces scarcity. Their transparent facet pattern demands higher clarity than brilliant cuts, which thins the pool of suitable stones. As the market floods with oval and round brilliant lab-grown inventory, step cuts that meet the clarity bar become comparatively rare. The week's price surge may have been the early edge of a longer structural trend.

Asscher's 19% gain on 32,102 listings deserves a caveat. Asschers are niche. At a $1,402 median, they were the most expensive shape in the dataset, and a handful of valuable stones moving on or off market can shift the median noticeably. The gain was real, but less actionable for most buyers.

The same stone for half the money

The cross-retailer spread sat at a median of 89.75%. For a diamond appearing at multiple retailers, and 47.6% of certified stones did, the most expensive listing averaged nearly double the cheapest.

On an oval at the $900 median, that spread meant the difference between roughly $600 at the most competitive retailer and $1,140 at the most expensive. Same stone. Same GIA certificate. Same carat, colour, clarity, cut. Different price tag.

Metric	Value
Cross-retailer overlap	47.6% of certified diamonds
Median price spread	89.75%
Implied oval range (at $900 median)	~$600 to ~$1,140
New listings, weekly	2,414,032 (+35.7%)

That spread was especially pronounced during a correction. Some retailers had already repriced their oval inventory while others hadn't caught up. The arbitrage was sitting in plain sight for anyone willing to compare.

New listings hit 2.4 million for the period, up 35.7% from the prior window. That influx brought fresh pricing into the market, and fresh listings from competitive retailers often came in below the existing price floor. The combination of correction pricing and new inventory created ideal conditions for comparison shopping.

Cheap doesn't mean good

A correction creates opportunity, but also traps. When prices fall across a category, the worst stones get cheaper too. Buying a poorly cut oval because it's $700 instead of $900 isn't a deal. You'll see the problem every time the light hits the ring.

Oval cut quality matters enormously because the shape is prone to the bow tie effect, a dark shadow across the centre visible in poorly proportioned stones. GIA doesn't grade oval cut (only rounds get a cut grade), so you have to evaluate proportions directly. Target table percentages between 54% and 60%, depth between 59% and 63%, and a length to width ratio of 1.35 to 1.50 for the classic oval profile.

Watch out for "too good to be true" listings. During corrections, some sellers offload their least desirable inventory at rock bottom prices. An oval with strong colour and clarity grades but poor proportions (table above 65%, depth above 68%) will lack brilliance regardless of what the spec sheet says. Stones with strong or very strong blue fluorescence can appear hazy in natural light, particularly in the D to F colour range. At correction prices, there was no reason to compromise on these fundamentals.

During the week ending April 13, the correction was broad enough that well-cut ovals fell alongside everything else. That's the sweet spot: properly proportioned, eye-clean stones at correction prices. The buyers who did best weren't chasing the absolute cheapest ovals. They filtered for quality first and let the correction deliver the value.

CaratHunter's scoring system captured this dynamic well. Stones with high quality scores (strong proportions, reputable certification, good polish and symmetry) that also carried low prices relative to their specification scored highest overall. Sorting by score during a correction surfaced exactly the right diamonds: gemologically sound stones priced below where they'd been seven days prior. For lab-grown ovals in particular, the quality versus value calculation tilted even further toward quality. With cheap lab-grown ovals everywhere, the scarce resource wasn't a low price. It was a good cut at a low price.

The right play

Ovals were the buy of the week ending April 13. Full stop.

If you were shopping for a 1 to 2 carat engagement ring without strong shape preferences, ovals offered the best combination of value, selection, and quality. The 23.47% correction created pricing that hadn't existed seven days earlier, and the cross-retailer spread meant careful comparison shoppers could compound those savings further.

Lab-grown ovals in the 1.5 to 2.0 carat range were the strongest individual play. The supply surge meant enormous selection. The correction meant soft prices. The 43% lab to natural gap meant you were already starting from a lower base. A well-cut 1.5ct F VS2 lab-grown oval available around $900 to $950 from competitive online retailers was still listed at $1,400 to $1,600 at premium brands. Knowing which was which mattered more than any other piece of buying advice that week.

Natural ovals under 1.2 carats were also compelling for buyers who wanted natural origin. Natural supply contracted 14.51%, which normally supports prices, but the broader oval sentiment dragged natural pricing down 1.77%. Modest on its own, but it came on top of the shape's wider correction. Naturals in the G to H colour range with VS2 clarity represented solid value for budget-conscious shoppers comfortable with a slightly warm colour tone.

Step cuts were the wrong trade at those prices. Princess at +71.23% and emerald at +45.99% had just moved sharply against buyers. Unless your heart was absolutely set on a step cut aesthetic, waiting made more sense than paying a freshly inflated premium.

Whether it lasted

The question after a correction this sharp is always whether it holds or bounces. Two factors pointed toward sustained lower oval prices: the lab-grown supply wave showed no signs of slowing (65.94% weekly growth is structural, not a blip), and the step cut rotation suggested a genuine taste shift underway.

But 23% in a week is steep. Some mean reversion was likely, particularly on the natural side where supply contraction should eventually support prices. The widest cross-retailer spreads also tend to compress over time as slower retailers reprice their inventory.

The signal to watch was lab-grown supply momentum. Weekly growth staying above 30% to 40% would keep oval prices soft through the rest of April. Stabilisation would mean a modest bounce. Active inventory was already up 6% overall, rising across seven consecutive measurement periods. The market was getting bigger, which meant more choice for buyers but also more noise to cut through.

Those who moved during the week ending April 13, bought well-cut ovals at correction prices, and compared across retailers likely got what will be remembered as one of the better buying windows of early 2026.