10K Gold ring with large pear shaped citrine gemstone 
Basket and prong setting.
Used Presidium Gem Tester II and it tested as citrine/quartz
From an estate. Previous owner shopped on HSN and this ring may have been purchased 

Size: 5.75 
Total weight: 3.7 grams
Marked: 10K and appears to be the letter M 
Condition: Pre-owned