https://www.edwardscollection.com/hill-rise

Ath Pavura Sandaruwan: 718616908 

https://www.facebook.com/athpavura/photos/a.343084002792154/740534373047113/?type=3&theater

https://www.facebook.com/athpavura/photos/a.354385008328720/666987400401811/?type=3&theater

https://www.facebook.com/DharshanaGreenPack/videos/1154486188218307/?t=1

https://www.facebook.com/DharshanaGreenPack/videos/1154486188218307/

https://www.facebook.com/kumuduni.senevirathna/videos/2154414134834807/?t=73

https://www.entrepreneur.com/slideshow/302638#5

https://www.entrepreneur.com/slideshow/302638#1

https://www.facebook.com/groups/300238173822512/

https://www.facebook.com/groups/300238173822512/

http://www.glittersgemstones.com/gemstones/3-06ct-rubellite-tourmaline/

https://www.wpdiamonds.com/sapphire-worth/

Apr 23, 2015 - Color change and bi-color sapphires are exceptionally rare stones, most ... and the fewer distracting zones of unattractive color, the more valuable the stone. ... Color change and bi-colored sapphire gems can be cut into many ...

Color has the most important influence on blue sapphire's value. The most highly valued blue sapphires are velvety blue to violetish blue, in medium to medium darktones. Preferred sapphires also have strong to vivid color saturation. ... Lessvaluable blue sapphires might be grayish, too light, or too dark.

https://www.gemlab.co.in/gemology/refractive-index/

https://www.diamonds.pro/education/pink-sapphires/

Pink is actually one of the rarest colors in sapphire. ... Like ruby, pink sapphire tends to have significant inclusions. So eye clean stones are quite valuable and large specimens are sought after by collectors and investors. Pink sapphires over 1 carat are rare, and a pink sapphire over 4 carats counts as extremely rare.

https://www.linkedin.com/pulse/padparadscha-sapphires-%E0%B6%B4%E0%B6%AF%E0%B6%B8%E0%B6%BB%E0%B6%9C-%E0%B6%B4%E0%B6%AF%E0%B6%B8%E0%B6%BB%E0%B6%A9%E0%B7%82-dinuka-dangedara-gia-d-g-

https://www.planetarygems.com/rare_gemstones5.htm

https://www.newsfirst.lk/2015/10/31/pink-diamond-expected-to-fetch-at-least-20-million-euros-at-geneva-auction/

https://www.itntv.lk/discussion/ath-pavura/

https://www.jewelryshoppingguide.com/pink-diamond-vs-pink-sapphire/

Both pink diamonds and pink sapphires come in avariety of shades. However, while pink diamonds can often have a secondary color, corundum classified aspink sapphires come only in a single color. The shade of pink sapphires is generally brighter than those of pink diamonds.

https://www.gempundit.com/pink-sapphire-gp36670

https://www.youtube.com/watch?v=FvcSHTuhgfQ

Rarity. While pink sapphires are hardly as expensive as pink diamonds, they are still very rare. Untreated stones that are free of inclusions and possess superior color are expensive.Mar 23, 2015

Diamonds in India are found in compact sandstones and conglomerates; either on the surface of these rocks or in the sands and gravels of rivers and streams that have flowed over them and have washed out these stones from their former situations. The annual worldwide output of Indian diamond-mines has been insignificant for centuries, and it is doubtful whether any appreciable number of diamonds leave the country at all. Just as it was before the eleventh century, mined diamonds are kept within the country to satisfy the passion for gems of the great Indian princes and magnates. Another reason these stones stay within the country is because their sales price is exceedingly higher in India, because in other world markets, the price of diamonds is regulated by the inexorable laws of supply and demand. So limited is the demand for diamonds in the Indian markets that the native supply is barely sufficient, and many foreign stones are imported, especially from the Cape in South Africa. Because India is not heavily involved with the worldwide diamond trade, not much is known of the recent quality of diamonds mined there. There are reports of single mines yielding stones of poor quality, but, as history gauges, India is a lush landscape of some of the world’s most prestigious diamonds. An Indian stone often shows a combination of luster, purity of water, strength of fire, and perfect "blue-whiteness" of color, and accounts of blue, green, and red diamonds have been heard of.