Under 15 weight: 9.8 carats. size: 18 x 12 x 6.6 mm. Boulder Opal. A beautiful deep clear amber stone, with streams of opal color running through it. Pendant or ring, but it's shaped like a globular drop with a flat back, so would probably favor a pendant. Price: $80 SOLD

Under 02 weight: 25.3 carats. size: 26 x 13 x 6.8 mm. Koroit Matrix Opal. There's only the merest amount of green fire opal in this piece, but the contrasting pattern is dramatic. It would make a bold man's ring. Price: $25 SOLD

Under 108 weight: 10 x 6.1 x 2.2 mm. Boulder Opal. Please remember that we've got a good Olympus camera and are shooting this photo in southern hemisphere natural sunlight. Every opal's color responds differently to different lights, like neon, halogen, etc. This one's good in all of them, but sun's the best. Price: $20 SOLD

Under 03 weight: 74.8 carats. size: 31 x 22 x 6.5 mm. Boulder Opal. A wild stone. The only part polished is the back, and it's got a good sized chip out of it (won't affect setting). The front is the natural face of the seem as it was split, just shaped off into a rectangle. Belt buckle or pendant. Price: $90

Under 09 weight: 20.8 carats. size: 26 x 13 x 8 mm. Yowah Nut Matrix Opal. A good ring stone. A face almost emerges in the lower right half. Price: $70 SOLD

Under 08 weight: 6.8 carats. size: 20 x 12 x 4 mm. Yowah Nut Matrix Opal. The veins are filled with deep reds and blues. The other side is also nice; would make a good reversable pendant. Price: $45

Under 52 weight: 17.3 carats. size: 25 x 13 x 7 mm. Koroit Matrix Opal. A nifty pendant stone. Price: $15 SOLD

Under 47 weight: 7.8 carats. size: 18 x 17 x 3.2 mm. Koroit Matrix Opal. Pleasant pattern and a little lake of opal blue. Price: $30 SOLD