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INVENTORIES, NET - Schedule of Inventories, Net (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Inventory [Line Items] |  |  |  |
Allowance for inventory obsolescence | $ (198) | $ (355) | $ (356) | $ (307)
Total inventories, net | 38,530 | 37,788 |  |
Loose diamonds |  |  |  |
Inventory [Line Items] |  |  |  |
Inventory, gross | 7,032 | 8,168 |  |
Fine jewelry and other |  |  |  |
Inventory [Line Items] |  |  |  |
Inventory, gross | $ 31,696 | $ 29,975 |  |

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