S925 เงินสเตอร์ลิงสร้อยคอไข่มุกแท้สร้อยคอไข่มุกน้ำจืดขนาด 3-4 มม. และไข่มุกดำน้ำทะเลตาฮิติขนาด 10-11 มม.

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