Specifications: Species: Serendibite Variety: Serendibite Weight: 4.54 ct Measurements: 10.40 x 9.00 x 6.31 mm Color: Black Transparency: Transparent Cut: Cushion Brilliant cut Treatment: No-Treatment Origin: Burma (Seller's Opinion): Laboratory Report No: TH254116507 Conditions: General Information: Serendibite is an extremely rare gemstone and is considered the 4th rarest mineral in the world, according to Forbes. First discovered in Sri Lanka in 1902, its name comes from "Serendib," an old Arabic name for the island. This rare mineral is prized for its deep blue to greenish-blue hues, though it can also appear black. Serendibite is composed of a complex mix of calcium, magnesium, aluminum, and boron silicate. Due to its extreme rarity and limited sources—primarily Sri Lanka and Myanmar—serendibite is highly sought after by collectors and gem enthusiasts, making it one of the most valuable and elusive gemstones on Earth. Customs and taxes: Your country of residence may apply extra customs duties and import taxes. Extra VAT calculations are based on the tax system of your country. We cannot be held responsible for any extra expense incurred for importing items into the purchaser's country of residence. *Please note that the buyer is always responsible for customs duties on international shipments. If you want to know the detailed amount, please contact the tax office in your area. Shipping: Expedited shipping worldwide. Shipping is insured with a tracking number. We will not accept to declare a lower value of the items or "GIFT" on the parcel. If the winning bidder decides to cancel / withdraw they will bear risk, cost of all shipping