Lot 480. Property of Princess Rama Malla, Nepal. Impressive fancy yellow diamond and diamond necklace. Estimate 780,000 — 1,365,000 CHF (735,850 - 1,287,738 EUR). Lot sold 1,630,000 CHF. Photo: Sotheby's.

Designed as a graduated line of circular-cut diamonds, the central fancy yellow diamond weighing 15.43 carats, on a clasp and chain accented with similarly cut diamonds, length approximately 350mm. 

Accompanied by GIA report no. 1162687542, stating that the central diamond is Fancy Yellow, Natural Colour, VS1 Clarity. 

Provenance: This necklace originally formed part of a longer diamond rivière in the collection of Her Royal Highness Maharani Kamala Rajya Lakshmi, wife of His Royal Highness Maharaja Sir Padma Shumshere Jung Bahadur Rana of Nepal, which she can be seen wearing in the adjacent portrait. Thence by descent to the present owner. 

Her Royal Highness Maharani Kamala Rajya Lakshmi of Nepal.

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 12 mai 2015, 10:30 AM