TourmalinePearlPendandPendantPeridotPeter Suchy JewelersPiagetPinPink DiamondPink SapphirePlatinumPrincess DianaPurplish Red RubyQueen ElizabethQuoteRachel KoenRed RubyRingRoyal Meander Tiara with Diamonds of Grand Duchess Viktoria MelittaRubelliteRubvRubyRuby and Diamond RingRuby RingSapphireScaviaSetareSphene...
When it was noticed that the grapes had a drusy surface (drusy means "covered with crystals"), the identity of "agate" was realized to be incorrect. Why? Because agate, as a variety of chalcedony, has a microcrystalline texture, while common quartz has a crystal size that can be ...
Many fine clear emeralds were produced, but most of the emerald-bearing rock was sold as "emerald matrix" for slabbing and cabochon cutting. The cabochons displayed emerald and tourmaline prisms in a white matrix of quartz and feldspar. This specimen is about 7 x 7 x 7 centimeters in size...
but it may also be grayish green or pale yellow. Unlike white mica or black mica, it makes aggregates of small flakes rather than well-formed crystalline masses. Look for it wherever lithium minerals occur, such as in colored tourmaline or spodumene. ...
A tourmaline and diamond ring might serve as an exceptional Tiffany & Co. engagement ring due to the added sparkle this stone brings. Gemmological reports suggest the tourmaline comes from Mozambique, the world’s biggest site of these gems. The piece sold for HK$2,565,000 (or £262,...