Betelgeuse, a bright star in the constellation of Orion, is much cooler, about 6,900 degrees F, and so even to the naked eye has an easily identified red hue. The brightest star in the night sky, Sirius (also known as the Dog Star), has a surface temperature of about 18,000 degrees F, which gives it its bluish tinge.
At 1109-carat, the Lesedi La Rona is the largest gem-quality rough diamond to be discovered in over a century and the largest Type IIa rough diamond in existence today. Image: Lucara Diamond Corporation. At 118.78 carats, the âThe Graff Venusâ is the worldâs largest D-color, Type IIA, flawless heart-shaped diamond.
Round Diamonds. The round shape is one of the most common cuts in diamonds. This shape has up to 108 facets, which means it can hide flaws in the stone. Round (or brilliant) diamonds indicate that the bride is traditional and wants a classic engagement ring.ear-Shaped Diamonds. Pear-shaped diamonds are also called teardrop-shaped diamonds. This shape provides the wearer with options. They can either wear the point of the ring so it faces up or down. This shape of diamond works well for a woman who likes versatility.