Jacob & Co.

12.95 carat fancy purple-pink radiant cut diamond engagement ring. IF clarity. $11.6m

Born Yakov Arabov, Jacob Arabo emigrated with his family when he was 14 from Uzbekistan to the US. At age 16, he enrolled in a six-month jewelry-making course, which he graduated four months later. By the time he was 17 he was designing his own pieces near New York City's diamond district.

30.11 carat natural fancy blue gray cushion-cut diamond mounted on a platinum setting. VVS2 clarity $20m .

Although he started out offering moderately priced, traditional jewelry, Arabo’s designs soon caught the eyes of celebrities, singers, and artists in the hip-hop and rap music world. In the early 1990s his clientele and business grew, and he became known as “Jacob the Jeweler”. In 2005 he relocated to a storefront on East 57th Street. Jacob & Company has been producing luxury watches for a quarter of a century.

Perhaps due to the extravagance of the diamond details, the watches have become a celebrity favorite. Jacob & Co. watches sometimes house over 30 carats of diamonds and other precious stones on the dial.

Seven Stones of the Russian Diamond Fund

The Kremlin's Diamond Depository dates to the reign of Peter I, who decreed for the treasures to become property of the Russian state, not the Royal Family. From then on, regalia, insignia and jewelry belonging to generations of Russian rulers would be stored in St. Petersburg. When WWI broke out, the collection was moved to Moscow and placed in the Armory basement, where it would stay for nearly 8 years. The Diamond Depository was established in 1922.

In 1967, when the Soviet state was celebrating its 50th anniversary the treasures were placed on public display.

A deep Red Spinel weighing 398.72 carats adorns the famous Great Imperial Crown. Made by court jeweler Jeremie Pauzie, the crown was created for the coronation of Catherine the Great in 1762.

The Orlov Diamond is on the Imperial gold scepter. The Orlov weighs 189.62 carats. Most agree that the stone was found at the famous Golconda deposits in India in the late sixteenth or early seventeenth century. It was probably part of a larger crystal that split off along the plane of the cleavage. The weight of this larger crystal was thought to be about 400 carats.

The Shah Diamond was called the "Prince's Stone" or "Solitaire of Hosrev-Mirza". The Shah diamond weighs 88.70 carats. Legend says the stone hung on a silk cord over the throne of the rulers of India.

The Table Portrait Diamond known as the "Tafelstein", is considered to be the largest specimen of table diamond in the world. The 25-carat stone is 4 x 2.9 cm and 2.5 mm deep. The Portrait Diamond Bracelet is of neo-gothic form, made in the second quarter of the nineteenth century, and bears a miniature watercolour portrait of Emperor Alexander I. It is painted on ivory from a portrait by the English painter George Dawe. The Maria Alexandrovna Sapphire Brooch. The deep-blue Ceylonese Sapphire weighs 260.37 carats and is set in a high mount of gold filigree decorated with diamonds.

The Columbian Emerald weighing 136.25 carats. Large and pure oval chrysolite from the island of Zaberget in the Red Sea. The name "chrysolite" comes from the Greek word meaning "gold stone". It weighs 192.60 carats. Chrysolites have been known and valued since antiquity.

The Lost Faberge Eggs

Peter Carl Fabergé and his brother Agathon were Russian jewellers of French descent based in St. Petersburg. They became famous for the quality and beauty of their work. In 1885 Tsar Alexander III (House of Romanov) commissioned the production of the gold and enamel 'Hen Egg' for his wife the Empress Maria.

The tsarina and the tsar enjoyed the egg so much that Alexander III ordered a new egg from Fabergé for his wife every Easter thereafter. Fabergé was made ‘Goldsmith by Special Appointment to the Imperial Crown’ and over the next 33 years 52 eggs were made for the Russian Royal Family as well as a further 15 for other private buyers.

The 1917 Revolution toppled Tsar Nicholas II who was executed along with much of the royal family. The Fabergé eggs and other Royal treasures were confiscated and stored in the vaults of the Kremlin Armoury. Some were sold to raise funds for the new regime. Eight of the original 52 Imperial eggs vanished and their whereabouts remained a mystery.

Imperial Coronation Egg

A $14,000 sale find turned into millions for a man who'd been thwarted in his attempts to turn a quick profit by selling the tiny ornament to scrap metal dealers. The man overestimated what the tiny golden egg would be worth once melted down. He'd been hoping to make $500. He typed "egg" and the name engraved on the clock it contained,"Vacheron Constantin", into Google. His search brought up a 2011 article in Britain's Daily Telegraph newspaper describing a "frantic search" for the object: the Third Imperial Easter Egg, made by Faberge for the Russian royal family and estimated to be worth millions.

The Rosebud Egg

Spider by Fabergé

A black widow Fabergé brooch could easily be worth $80,000-$150,000 or more at auction, if it were real.

Fabergé Spider Brooch? So you were watching Pawn Stars and couldn't believe it when a woman came in with a platinum and diamond encrusted Fabergé spider brooch looking for $2,000 and ended up getting a whooping $15k? How much is an authentic Fabergé spider brooch going for these days?

The Fabergé workshop of St Petersberg in 1910

The Fabergé company, officially "The House of Fabergé", has spoken out about the possible Fabergé spider brooch. In an email sent to 'Time', a spokeswoman for the company called the reports of a new Fabergé spider brooch “untrue and unfounded,” claiming the eight-legged brooch does “not fit into the luxury jeweler’s creative vision.”

Fabergé, however, does not have complete records on the company.