A stunning and rich yellow diamond from the famous Argyll Mine, showing natural color and a sharply twinned form. Although a fine competitive-level thumbnail gem crystal in its own right, this is suitable for jewelry, to simply mount and wear as is. Yelow macle twins are very rare, as are any. Note the superb gemminess and adamantine luster, as well! 0.68 carats. These are almost impossible to obtain, as nearly all are cut immediately for the obvious gemstone value and easier market in selling cut stones.