CaratThree fancy-color diamonds go up with no reserve
Bonhams' 300-lot California sale on Tuesday sets modest estimates on serious color — a pink-purple oval, a deep pink and a heart-shaped blue, each topping near $35,000–$50,000 — and lets a 70-carat necklace sell with no floor at all.
§1The smallest lots say the most.
Bonhams brings more than three hundred jewels to the block in California on Tuesday, and the most telling lots are the smallest. Three unmounted fancy-color diamonds anchor the sale: a 1.01-carat oval fancy pink-purple estimated to about $50,000, a 1.64-carat fancy deep pink to roughly $35,000, and a 0.53-carat heart-shaped fancy blue also near $35,000. In a category where top color can command seven figures, these are deliberately accessible numbers.
Above them sits the sale's marquee curiosity: a 70-carat diamond necklace of pear, oval and marquise stones carrying an upper estimate of just $50,000 — and offered with no reserve, meaning it will sell to the highest bid however low. A 1920s necklace built around a 7.10-carat center stone is estimated near $35,000, and a multicolored sapphire-and-diamond necklace, 34.95 carats of sapphires to 4.20 of diamonds, at about $28,000. Van Cleef & Arpels, Graff and Boucheron appear throughout.
§2A necklace with no floor.
The strategy is legible in the estimates. No-reserve lots and conservative valuations are how a house generates competition and clears estate material in a cautious market: set the bar low, let the room find the price. It is the opposite of the trophy-lot playbook that carried the spring's headline sales, and a useful barometer of where mid-market demand actually sits when the eight-figure stones are not in the room.
No-reserve lots and conservative valuations are how a house generates competition and clears estate material in a cautious market: set the bar low, let the room find the price.
§3Paying for the unmanufacturable.
It also reads against the week's other diamond story. Natural stones are competing on rarity and provenance as lab-grown collapses the price of size; fancy color — genuinely scarce, impossible to grow to order at scale — is where that argument is strongest. A room bidding up small pinks and blues is a room still paying for what cannot be manufactured.
Watch the no-reserve necklace as the sale's honest number. Estimates are a house's opinion;
a lot with no floor prints whatever the market truly thinks a 70-carat necklace is worth on a Tuesday in July — and that figure will say more about the mid-market than any record would.
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The 70-carat necklace, before the hammer.