Tuesday, 29 December 2020

Stolen Jade boulder recovered

A massive jade boulder stolen from the front of a shop in Cache Creek has been recovered. Cariboo Jade and Gifts announced the 2,800-pound boulder was found intact.
Worth upwards of $50k to the right person, the rock was stolen on Dec. 19.

A group of thieves used an excavator on a flatbed to lift the rock onto the trailer towed by a brown pickup truck. The truck and trailer were later found dumped in Kamloops, but the stone and excavator were still missing. A photo posted to Facebook by Cariboo Jade and Gifts shows the boulder where it was dumped by the crooks.

Monday, 28 December 2020

Sapphire from Baffin Island, Nunavut - Beluga spinel


The Beluga spinel has an unusually intense blue colour with the chromophore (colouring agent) being cobalt.
In 2002, gem quality blue sapphire was discovered in the Canadian Arctic, near the hamlet of Kimmirut.

In late 2005 True North Gems discovered an extremely rare, cobalt-rich variety of spinel.
Gemstone exploration, with the exception of diamonds, is not common in Canada. A decade ago, emerald mineralization was discovered in the Yukon, Northwest Territories and Ontario which generated a brief period of interest.

There have also been sapphire discoveries in British Columbia, Nunavut and Ontario.
These discoveries led to a number of scientific papers but gemstone mining remains a speculative and unfamiliar market for most.

Saturday, 26 December 2020

Boghossian emerald necklace - $7m

A Boghossian emerald necklace was top lot of a recent Christies sale on November 30, 2020. The necklace made US$7m breaking the record for a selection of no oil Colombian emeralds set in May 2017.

The Emerald Tzar of Colombia

Víctor Carranza (8 October 1935 – 4 April 2013) was a Colombian emerald dealer and the owner of emerald mines in the Boyacá mountains.

Carranza was involved in the Muzo mining area outside Boyacá, Colombia from the 1980s until his death. Various forces clashed during the Green War, including Pablo Escobar and the Medellin Cartel, leftist guerrilla groups and right wing paramilitaries. Carranza remained in control of Colombia's emerald trade during this period. Carranza controlled at 40% of Colombia’s emerald business, which supplies about two thirds of the world’s stones.
Before the signing of a peace pact in 1991, an estimated 3,000 people were killed in fighting for control of the business.

As cancer spread, his hold on power slipped, and the peace pact started to unravel. He survived at least two assassination attempts.
The emerald tsar brought a relative peace to the industry.

Carranza claimed emeralds “called to him”.
Slipping production is likely the reason behind the rise in the price of Colombian emeralds, which spiked 30 per cent in 2017, according to industry experts.

Monday, 21 December 2020

Umba Sapphire


The most famous Tanzanian sapphires are 'African padparadschas.'
Umba sapphire is a unique type of sapphire discovered in 1962 in the Gerevi Hills, north of the Umba River in the Umba Valley of Tanzania. Umba sapphires exhibit coloration not common to sapphires sourced from other parts of the world. At a small bend in the Umba River near the Kenyan border, a unique two-mile-radius deposit produces just about every color of sapphire imaginable.
Umba sapphires are mainly known for their range of orange-red, orange, and orangy golden yellow colors. These unique colors are due to various coloring elements including chromium, manganese, iron , titanium, and high proportions of vanadium.
The gem gravel of the Umba River Valley has been a major source of sapphires for at least a half century. The area also yields rare color-change sapphires.

Sunday, 20 December 2020

Diamond hearts shine


$3.1m (Red) $1.9m (Orange)

The heart-shape diamonds fetched $10.5m (fancy blue) and $8.1m (fancy pink), respectively.


The Graff Venus weighs 118.78 carats, D colour, Type IIA.
The Heart of Eternity is a heart-shaped 27.64 carat fancy vivid blue diamond. Because of its color, size, and clarity, the Heart of Eternity is one the world's most valuable gems. In 2000 it sold for $16m.

The Argyle Amour Diamond weighs 2.61 carats and is the most valuable heart-shaped diamond discovered at the Argyle Diamond mine.

Friday, 18 December 2020

Top non-diamond engagement Rings

Controlling supply and directing demand, De Beers was able to build and control a market unlike other companies ever have. Diamonds did not always top the list for most desired engagement stone. When De Beers ran large-scale and effective marketing campaigns it changed the perception of diamonds and built a story around their aura.

De Beers created a story of love, romance, and indestructible commitment around the diamond.
Morganite is one of the hottest engagement ring alternatives. Morganite is traditionally pink to orange-pink in color and is often found in large sizes.

Garnet is a series of many different minerals each with its own unique chemical formula. Garnet comes in many colors. Reds and pinks seem the most popular for engagement rings.
Moissanite is a naturally occurring silicon carbide with similar look and characteristics of a diamond at a fraction of the cost.Tanzanite is 1000 times rarer than diamonds and is a single source gemstone ... and that source is running out. Tanzanite is a blue variety of zoisite with a rich deep blue and sometimes purple hues.
Oregon Sunstone is becoming more popular in an engagement ring. The inclusion of copper crystals within the Sunstone (plagioclase feldspar) is unique and imparts a speckled glimmer within the gemstone.

Tsavorite is a variety of garnet that hosts calcium-aluminum, and trace amounts of chromium and vanadium to impart the rich green color.

Mountain Province Diamonds lands 157.4 carat diamond

The 157.4 carat diamond was found at the Gahcho Kué mine. Mountain Province Diamonds (TSX:MPV), holds a 49% stake in the Gahcho Kué mine in Canada’s Northwest Territories. It said the diamond is the largest ever found.

The 157.4-carat “gem quality” stone will be offered for sale during the first quarter of 2021.

Saturday, 12 December 2020

Kashmir sapphire brings $6m at Christie's

An Art Deco Kashmir sapphire of 12.64 carats and diamond brooch by Cartier, formerly from the collection of Jean Stralem made $1.5m.
Christie’s New York announced its auction of Magnificent Jewels and the preceding Jewels Online auction from November 18 to December 1, which together present over 500 lots. The live auction offered over 380 jewels featuring a notable selection of coloured diamonds, colourless diamonds, and gemstones, alongside important signed pieces by Suzanne Belperron, René Boivin, Bulgari, Cartier, David Webb, Harry Winston, JAR, Marina B, Tiffany & Co., Van Cleef & Arpels, and Verdura.

Leader was a Kashmir sapphire and diamond bracelet of 43.10 carats surrounded by 67.90 carats of diamonds. It made $6m.
‘The Du Pont' Padpradscha Sapphire ring 24.58 carats made $930,000.

Intense Purplish pink diamond earrings of 2.61 and 2.34 carats, potentially IF. $2m.

Thursday, 10 December 2020

Sotheby’s New York Magnificent Jewels auction

A Cartier emerald and diamond ring blew far past it's estimate to become the top lot at Sotheby’s New York Magnificent Jewels auction. It fetched $3.6m, more than three times its high estimate. The ring features a 21.86-carat Colombian square-emerald-cut emerald flanked by diamonds and mounted on 18k yellow gold.

A 2-carat fancy vivid orange diamond fetched nearly $1.9m.



Monday, 7 December 2020

Farmer in India recovers 14.98 carat diamond

A farmer in India said his life is completely changed after he found a 14.98-carat rock worth more than 6 million rupees, or about $80k. Lakhan Yadav, 45, found the diamond on land he started renting last month for 200 rupees (about $2.70) in Madhya Pradesh. The diamond was later sold for 60.6 lakh. (a lakh is 100,000 rupees.)

Yadav said the treasure revealed itself in a handful of dirt, and that he nearly mistook the diamond for a pebble. “It has changed my life,” he said.

Monday, 30 November 2020

Spinel of Mahenge, Tanzania

In 2007 farmers in Mahenge, Tanzania found a giant spinel crystal weighing 52 kg. The spinel displayed a vibrant pink color now famous from Mahenge Spinel. The crystal was highly included, but large chunks of top quality stone were able to be cobbed off. Thousands of carats of gem quality gems were cut in Thailand and distributed. From this point on Mahenge Spinel was in the spotlight as one of the world's most vibrant gemstones.
Spinel is sought after by gem connoisseurs, and well-formed spinel crystals are in high demand. Red spinel range from orange-red to purplish red, with pure red considered the finest.

A top-quality 5 carat red spinel might sell for a tenth of an equivalent-quality ruby. Pink spinel often sells for less than pink sapphire.
For centuries, spinel has been confused with ruby. Spinel is often found in the same deposits as ruby. Now, with modern testing techniques, the two stones are easily identifiable.What sets spinel apart is it’s durability. It sits at an 8 on the MOHS scale, making it ideal for daily wear jewels.