About Nikka Jewelry
Since 1979, we've specialized in buying and selling diamonds, jewelry, coins, numismatics, gold, and precious metals. We serve both investors and private collectors, offering a range of unique and high-quality items like vintage jewelry, designer pieces, estate collections, fine jewelry, exquisite watches, and rare coins. With our extensive experience in the industry, we bring a wealth of knowledge to the jewelry and watch markets. Our focus is on providing top-notch jewelry and watches at great prices while guaranteeing authenticity for every item we sell.
Established in 1979
Featured Pieces
3.3 CT Natural Ruby & Diamond 14K White Gold Tennis Bracelet Art Deco 7 In
Located in Los Angeles, CA
Metal: 14 Karat White Gold
Weight: 14.9 Grams of Solid 18 karat white gold
Ruby: Approximately 1.80 Carat Total Weight of Princess Cut Deep Red Rubies
Diamond: Approximately 1.50 Car...
Category
Late 20th Century American Art Deco Tennis Bracelets
Materials
Diamond, Ruby, White Gold
0.65 CT Natural Diamond Round Cut 14K White Gold Pendant 18"
Located in Los Angeles, CA
Elegant and timeless, this beautiful diamond floating pendant is crafted in 14K white gold and showcases a brilliant diamond design that appears to float gracefully along the necklin...
Category
Late 20th Century American Art Deco Pendant Necklaces
Materials
Diamond, White Gold
Natural Diamond Baguette Round Cut 1.56 Carat Half Eternity Ring 14K Yellow Gold
Located in Los Angeles, CA
Bandwidth is 4.95 MM.
The height on top is 3.38 MM.
Ring Size: 6.75
Metal: 14 Karat Yellow Gold
Ring Weight: 6.7 Grams of solid gold
Diamond: Approximately 1.56 Carat Total Weight of...
Category
Mid-20th Century American Art Deco Band Rings
Materials
Diamond, Yellow Gold
GIA Certified 1.04 CT Natural Diamond Oval Brilliant Cut D Color VVS2 Clarity
Located in Los Angeles, CA
This GIA-certified Natural Oval Brilliant Cut diamond is a stunning piece.
GIA Report Number - 2235170822
Stone Creation - Natural
Shape - Oval Brilliant Cut
Measurements - 8.27 x 5....
Category
21st Century and Contemporary Art Deco Loose Gemstones
Materials
Diamond
GIA Certified 1.20 Carat Natural Diamond Round Brilliant Cut F Color VS1 Clarity
Located in Los Angeles, CA
Stone Creation - Natural
Shape - Round Brilliant Cut
Measurements - 6.74 - 6.77 x 4.23 mm
Weight - 1.20 Carat
Color - F
Clarity - VS1
Cut - Very Good
Polish - Very Good
Symmetry - Ex...
Category
21st Century and Contemporary Art Deco Loose Gemstones
Materials
Diamond
GIA Certified 1.29 Carat G-VS1 Excellent cut Natural Diamond Round Brilliant
Located in Los Angeles, CA
Stone Creation - Natural
Shape - Round Brilliant Cut
Measurements - 7.14 - 7.16 x 4.24 mm
Weight - 1.29 Carat
Color - G
Clarity - VS1
Cut - Excellent
Polish - Excellent
Symmetry - E...
Category
21st Century and Contemporary Art Deco Loose Gemstones
Materials
Diamond
GIA Certified Triple X 1.50 Carat Natural Diamond Round Brilliant Cut H VS2
Located in Los Angeles, CA
GIA Report Number - 2225380649
Stone Creation - Natural
Shape - Round Brilliant Cut
Measurements - 7.31 - 7.34 x 4.54 mm
Weight - 1.50 Carat
Color - H
Clarity - VS2
Cut - Excellent
...
Category
21st Century and Contemporary Art Deco Loose Gemstones
Materials
Diamond
GIA Certified 2.01 CT Natural Diamond Round Brilliant Cut J SI2+ Very Good Cut
Located in Los Angeles, CA
GIA Certified 2.01 Carat Round Brilliant Cut Diamond J SI2 Loose Diamond. This natural round brilliant cut diamond weighs 2.01 carats and is graded by the Gemological Institute of Am...
Category
21st Century and Contemporary American Art Deco Loose Gemstones
Materials
Diamond
GIA Certified Triple Excellent 1.75 CT Natural Round Brilliant Cut Diamond H SI2
Located in Los Angeles, CA
This GIA-certified Triple X Natural Round Brilliant Cut diamond is a stunning piece of jewelry. This GIA-certified Triple X Natural Round Brilliant Cut diamond is a stunning piece of...
Category
21st Century and Contemporary American Art Deco Loose Gemstones
Materials
Diamond
GIA Certified 1.60 Carat Triple X G VS2 Excellent Cut Natural Diamond Round Cut
Located in Los Angeles, CA
This GIA-certified Natural Round Brilliant Cut diamond is a stunning piece of jewelry.
Stone Creation - Natural
Shape - Round Brilliant Cut
Measurements - 7.59 - 7.63 x 4.62 mm
Weig...
Category
21st Century and Contemporary American Art Deco Loose Gemstones
Materials
Diamond
GIA Certified 2.02 Carat Natural Diamond Princess Cut F Color SI1 Clarity
Located in Los Angeles, CA
This GIA-certified Natural Rectangular Modified Brilliant Cut / Princess Cut diamond is a stunning piece of jewelry.
Stone Creation - Natural
Shape - Rectangular Modified Brilliant ...
Category
21st Century and Contemporary American Art Deco Loose Gemstones
Materials
Diamond
Natural Diamond Oval Cut 1.00 CT GIA Engagement Wedding Ring Set 14K Rose Gold
Located in Los Angeles, CA
Natural Diamond Oval Cut 1.00 Carat GIA Engagement Wedding Ring Set 14K Rose Gold. This ring set features a natural oval cut diamond in a coordinated engagement and wedding band desi...
Category
20th Century American Art Deco Engagement Rings
Materials
Diamond, Rose Gold
