Unmounted Emerald-cut Diamond, Type IIa. Photo Heritage Auction

The diamond measures 13.45 x 11.11 x 6.96 mm and weighs 9.26 carats. A GIA Laboratory report # 11707311, dated October 9, 2012, statingD color, Internally Flawless clarity, and a GIA Classification report, accompany the diamond. Estimate: $850,000 - $950,000.

Condition Report: Diamond Average Color: D-E-F
Diamond Certification No: 11707311
Diamond Lab: GIA
Diamond Average Clarity: IF
Diamond Shapes: Emerald-cut
Diamond Count: 1 - 25
Overall Condition: Excellent

Notes: This diamond is determined to be Type IIa by the Gemological Institute of America, an exceptionally rare find.

DALLAS, TX.- A magnificent 9.26 carat GIA D/IF Type IIa unmounted diamond is expected to bring at least $1 million to lead Heritage Auction’s Dec. 3 Jewelry Signature® Auction. It joins more than 1,500 lots in an auction expected to break $7.9 million. 

“The exceptionally rare Type IIa diamond is about as perfect as a diamond can get. In fact, less than 2% of the world’s diamonds meet the Type IIa criteria,” said Jill Burgum, Director of Fine Jewelry at Heritage. “It appears on the heels of the spectacular 8.99 carat Kashmir Sapphire ring which brought $527,500 in our April event. Our clients depend on us to find unique statement pieces that define a collection or a portfolio and we are proud to again present them with a prime selection.” 

The first session is highlighted by a 10.75 carat diamond platinum ring (estimate $300,000+), a 6.29 carat pear-shaped diamond platinum ring (estimate $175,000+), and a 5.00 carat diamond white gold ring (estimate $125,000+).

Diamond, Platinum Ring. Photo Heritage Auction

The ring features an emerald-cut diamond measuring 16.12 x 10.83 x 7.01 mm and weighing 10.75 carats, enhanced by kite-shaped diamonds weighing a total of approximately 0.60 carat, set in platinum. A GIA Laboratory report # 12474845, dated March 6, 2003, stating H color, VS2 clarity, accompanies the center diamond. Gross weight 8.07 grams. Size: 7 (sizeable). Estimate: $300,000 - $350,000.

Property from a Private Houston, TX Collector

Condition Report: Diamond Average Color: G-H-I
Diamond Certification No: 12474845
Diamond Lab: GIA
Diamond Average Clarity: VS
Diamond Shapes: Emerald-cut, Kite-shaped
Diamond Count: 1 - 25
Overall Condition: Excellent

Diamond, Platinum Ring. Photo Heritage Auction

The ring features a pear-shaped diamond measuring 15.68 x 11.17 x 6.66 mm and weighing 6.29 carats, accented by single-cut diamonds weighing a total of approximately 0.15 carat, set in platinum. A GIA Laboratory report # 2141522015 dated March 13, 2012, stating E color, VS2 clarity, accompanies the center diamond. Gross weight 5.48 grams. Size: 7 (sizeable). Estimate: $175,000 - $200,000.

Condition Report: Diamond Average Color: D-E-F
Diamond Certification No: 2141522015
Diamond Lab: GIA
Diamond Average Clarity: VS
Diamond Shapes: Pear Brilliant-cut, Single-cut
Diamond Count: 1 - 25
Overall Condition: ExcellentDiamond Average Color: D-E-F

Diamond, White Gold Ring. Photo Heritage Auction

The ring features an Asscher-cut diamond measuring 9.57 x 9.55 x 6.51 mm and weighing 5.00 carats, enhanced by full-cut diamonds weighing a total of approximately 0.24 carat, in 14k white gold. A GIA Laboratory report #1142422063 dated February 06, 2012, stating G color, VS1 clarity, accompanies the center diamond. Gross weight 5.40 grams. Size: 6-3/4 (sizeable). Estimate: $125,000 - $150,000.

Condition Report: Diamond Average Color: G-H-I
Diamond Certification No: 1142422063
Diamond Lab: GIA 
Diamond Average Clarity: VS
Diamond Shapes: Asscher-cut, Full-cut
Diamond Count: 26 - 50
Overall Condition: Excellent

The interest in fine colored gemstones is on the rise and continuing to set record prices at auction. A number of works present ideal opportunities for collectors and investors, such as an 11.60 carat cushion-shaped ruby diamond platinum ring (estimate $120,000+), a 10.71 carat cushion-shaped emerald diamond platinum ring (estimate $110,000+) and an oval-shaped sapphire diamond gold ring, designed by Boucheron (estimate $70,000+).

Ruby, Diamond, Platinum Ring. Photo Heritage Auction

The ring features a cushion-shaped ruby measuring 14.35 x 10.65 x 7.30 mm and weighing 11.60 carats, enhanced by modified pentagon-shaped diamonds weighing a total of approximately 1.20 carats, set in platinum. A Gübelin Gem Lab report #12038104, dated March 12, 2012, stating Natural Corundum, Origin Burma (Myanmar), No Indications of Heating, accompanies the ruby. Gross weight 11.30 grams. Size: 6-1/2 (sizeable). Estimate: $120,000 - $150,000.

Condition Report: Diamond Average Color: G-H-I
Diamond Average Clarity: VS
Diamond Shapes: Modified Pentagon-shaped
Diamond Count: 1 - 25
Gem Type: Ruby
Gem Certification No: 12038104
Gem Lab: Gübelin
Gem Shape: Cushion-shaped
Gem Count: 1 - 25
Overall Condition: Excellent

Emerald, Diamond, Platinum Ring. Photo Heritage Auction

The ring features a cushion-shaped emerald measuring 15.42 x 12.71 x 8.37 mm and weighing 10.71 carats, enhanced by tapered baguette-cut diamonds weighing a total of approximately 0.70 carats, set in platinum. Two laboratory reports, one Gübelin # 12055285, dated May 11, 2012, stating Origin Colombia, Indications of Minor Clarity Enhancement; and one GRS # GRS2011-081189, dated August 8, 2011, statingNatural Emerald, Minor Clarity Enhancement, accompany the emerald. Gross weight 9.68 grams. Size: 6-1/2 (sizeable) Estimate: $110,000 - $140,000.

Condition Report: Diamond Average Color: G-H-I
Diamond Average Clarity: VS
Diamond Shapes: Tapered Baguette-cut
Diamond Count: 1 - 25
Gem Type: Emerald
Gem Certification No: 12055285, GRS2011-081189
Gem Lab: Gübelin, GRS
Gem Average Clarity: Fine
Gem Shape: Cushion-shaped
Gem Count: 1 - 25
Overall Condition: Excellent

Sapphire, Diamond, Gold Ring, Boucheron, French. Photo Heritage Auction

The ring features an oval-shaped sapphire measuring 13.17 x 11.61 x 9.61 mm and weighing 13.33 carats, enhanced by pear-shaped diamonds weighing a total of approximately 1.50 carats, set in 18k gold, marked Boucheron, French hallmarks. A GIA Laboratory report # 2145461253, dated October 4, 2012, stating Natural Corundum, Origin Sri Lanka, No Indications of Heating, accompanies the sapphire.Gross weight 7.07 grams. Size: 7-3/4 (sizeable) Estimate: $70,000 - $90,000.

Boucheron:Frederic Boucheron (1830-1902) apprenticed under Jules Chaise prior to opening his first shop in 1858 at Palais Royale, the jeweler's area of Paris. The firm’s reputation for design, craftsmanship and the use of gemstones propelled it into the luxury market. By the mid 1860s, Boucheron opened a studio at the Place Vendome, still their corporate headquarters. The firm has participated in every style of contemporary jewelry. The business has been passed through the family and remains privately owned. In addition to Paris, the company operates boutiques in London, the Middle and Far East, Japan, and Moscow.

Condition Report: Designer: Boucheron
Diamond Average Color: D-E-F
Diamond Average Clarity: VS
Diamond Shapes: Pear-shaped
Diamond Count: 1 - 25
Gem Type: Sapphire
Gem Lab: GIA
Gem Average Clarity: Fine
Gem Shape: Oval-shaped
Gem Count: 1 - 25
Overall Condition: Excellent
Notes: Reference number P 5 1613. Engraved C.A. 29.12.99.

The Dec. 3 event offers a breadth of beautifully-crafted jewels by renowned 20th century designers including Cartier, Tiffany and Webb, with examples ranging from a 3.18 carat Lucida-cut diamond platinum ring by Tiffany & Co. (estimate $75,000) to a coral diamond platinum gold bracelet by David Webb (estimate $25,000+). 

Among the strong selection of colored diamonds is a suite featuring a 34.05 total carat fancy light to fancy pink diamond gold necklace, (estimate $90,000+), its matching 17.61 total carat pink diamond gold bracelet (estimate $60,000+) and a pair of diamond and gold earrings (estimate $30,000+). Additional offerings include a magnificent 6.50 carat diamond platinum ring (estimate $100,000+), featuring a cushion-cut fancy intense yellow diamond and a spectacular 47.05 carat total weight yellow diamond and gold necklace (estimate $60,000+).

Fancy Light to Fancy Pink Diamond, Gold Necklace. Photo Heritage Auction

The necklace features full, pear, marquise, oval, cushion, triangle, and radiant-cut diamonds weighing a total of 34.05 carats, set in 18k pink gold, stamped "HANA" and "D34.05". A GIA Laboratory report #2145820658 dated July 25, 2012, stating Diamond, Fancy Light to Fancy Pink, Natural Color, accompanies the pear-shaped diamond measuring approximately 3.68 x 2.76 mm. Gross weight 83.10 grams. en suite with 58554 and 58555. Dimensions: 17 inches x 1/2 inch Estimate: $90,000 - $120,000.

Condition Report: Diamond Color: Fancy Light to Fancy Pink
Diamond Certification No: 2145820658
Diamond Lab: GIA 
Diamond Average Clarity: SI
Diamond Shapes: Full-cut, Pear-shaped, Marquise-shaped, Oval-shaped, Cushion-cut, Triangular-shaped, Radiant-cut
Diamond Count: 100+
Overall Condition: Excellent

Very Light to Light Pink Fancy Colored Diamond, Gold Bracelet. Photo Heritage Auction

The bracelet features full, pear, marquise, triangle, and radiant-cut diamonds weighing a total of 17.61 carats, set in 18k pink gold, stamped "HANA" and D17.61. A GIA Laboratory report #5141904515 dated August 1, 2012, stating Diamond, Very Light to Light Pink, Natural Color, accompanies the bracelet. Gross weight 41.90 grams. en suite with 58553 and 58554. Dimensions: 7 inches x 1/2 inch Estimate: $60,000 - $80,000.

Condition Report: Diamond Color: Very light to light pink
Diamond Certification No: 5141904515
Diamond Lab: GIA Gem Trade Laboratory
Diamond Average Clarity: SI
Diamond Shapes: Full, marquise, pear, oval, princess, radiant, triangular cut
Diamond Count: 100+
Overall Condition: Excellent

Fancy Diamond, Gold Earrings. Photo Heritage Auction

The earrings feature full cut, pear, marquise, oval, and cushion shaped diamonds ranging in color from fancy light pink, fancy brownish pink to fancy purplish pink, weighing a total of 8.89 carats, accented by full cut diamonds weighing a total of .95 carat, in 18k pink gold. A GIA Laboratory report #2145648636 dated May 25, 2012, stating A: Fancy Light to Fancy Brownish Pink, Natural Color; B: Fancy Light to Fancy Purplish Pink, Natural Color, accompanies the earrings. Gross weight 16.80 grams. en suite with 58553 and 58555. Dimensions: 2 inches x 13/16 inch. Note: earrings are designed for pierced ears Estimate: $30,000 - $40,000.

Condition Report: Diamond Color: Fancy Light Pink, Fancy Brownish Pink, Fancy Purplish Pink
Diamond Certification No: 2145648636
Diamond Lab: GIA Laboratory
Diamond Average Clarity: SI
Diamond Shapes: Full cut, pear,marquise, oval, cushion
Diamond Count: 100+
Overall Condition: Excellent

Fancy Intense Yellow Diamond, Diamond, Platinum Ring. Photo Heritage Auction

The ring features a cushion-cut diamond measuring 10.34 x 9.82 x 6.76 mm and weighing 6.50 carats, set in 18k gold, flanked by cushion-cut fancy yellow diamonds weighing a total of 1.18 carats, set in 18k gold, enhanced by full-cut diamonds weighing a total of 1.85 carats, set in platinum. An EGL report #US 906011101D, dated July 13, 2012, stating Natural, Fancy Intense Yellow Color, accompanies the center diamond. Total diamond weight is 9.53 carats. Gross weight is 16.00 grams. Size: 6 (sizeable) Estimate: $100,000 - $120,000.

Condition Report: Diamond Average Color: D-E-F
Diamond Color: Fancy Intense Yellow
Diamond Certification No: US 906011101D
Diamond Lab: EGL
Diamond Average Clarity: VS
Diamond Shapes: Cushion Modified Brilliant-cut, Full-cut
Diamond Count: 100+
Overall Condition: Very Good

Fancy Colored Diamond, Diamond, Gold Necklace. Photo Heritage Auction

The necklace features full, marquise, pear, oval and radiant-cut fancy light to fancy intense yellow diamonds weighing a total of 47.05 carats, accented by full-cut diamonds weighing a total of 13.97 carats, in 18k white gold stamped 'HANA', 'D47.05', and 'D13.97'. A GIA Laboratory report #2105847169 dated June 16, 2009, stating A: Fancy to Fancy Intense Orange-Yellow, Natural Color; B: Fancy Light to Fancy Yellow, Natural Color accompanies the necklace. Gross weight 115.80 grams. Dimensions: 16-1/2 inches x 3 inches (at widest point) Estimate: $60,000 - $80,000.

Condition Report: Diamond Average Color: G-H-I
Diamond Color: Fancy Light to Fancy Intense Yellow
Diamond Certification No: 2105847169
Diamond Lab: GIA Laboratory
Diamond Average Clarity: SI
Diamond Shapes: Full-cut, Oval-shaped, Marquise-shaped, Pear-shaped, Radiant-cut
Diamond Count: 100+
Overall Condition: Very Good

Heritage will present materials representing estates from across the country, including an outstanding 6.40 total carat diamond platinum necklace (estimate $8,000+) from the private collection of two-time Academy Award-winning actress Sally Field. From the former estate of Wanda Toscanini Horowitz, daughter of conductor Arturo Toscanini and wife of pianist Vladimir Horowitz, comes an Art Deco diamond platinum compact (estimate $4,000+).