A Diamond's Journey:
Earth to Elegance

About Us

With our headquarters situated in Hong Kong, DDA Group specialises in the trade of diamonds. Our worldwide investments sees our presence within every stage of the diamond journey – from Earth to Elegance. Our development and commercial exploitation portfolio of five alluvial diamond projects located in South Africa are designed to prove, confirm and improve current resource estimates.

Our private equity fund, Sinolux Capital allows us to invest in diamond companies which provide funding solutions to the diamond trade. This provides the advantage of extending our industry network, widening our access to excellent quality rough diamond products. Sales of rough and polished diamonds; and the design, production and retail of our fine diamond jewellery collection, Iris Alexander takes us to the end of the diamond journey. Our journey is a shared passion with our customers and partners.



Iris Alexander honours the inimitable beauty of the world’s rarest and most precious gemstones, expressing their utmost potential with limited collections designed with audacity and reverence.

Attributing the ingenuity of high jewellery and its transformative nature, each piece encapsulates the relationship between a woman and the moments in her life; inspiring and creating them - for an occasion, and for a lifetime.



Rough and polished diamonds are sold on auctions conducted by DDA Trading BVBA, our affiliate company in Antwerp, Belgium, using its proprietary online diamond trading platform. Prior to each auction, our clients can inspect offered diamond parcels at viewings in Antwerp, Dubai or Hong Kong.

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Our origins in diamond trading commenced long before our involvement in the production and sales of our fine jewellery line, Iris Alexander. Our Hong Kong entity Sinolux Capital funds selected diamond exploration and mining companies around the world on either a debt or an equity basis. It continues with the offer of financing to both producers and buyers within the diamond trade. This cooperation expands our network of in-depth relationships in the industry, and extends our access to premium rough diamond product.

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Media & News

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DPA Launches ‘Diamond Journey’ Campaign

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LVMH saw rise in jewelry and watch sales in the third quarter

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Pink Diamond Sells for $20M at Sotheby’s

National Retail Federation (NRF) forecasts strong rise in US holiday sales

Richemont Acquires Italian Jeweler Buccellati

Synova Launches Automated Diamond Cutter

Cartier twin sapphire ring fetchs more than double its low estimate

Nemesis International unveils 313-carat diamond, largest D-color polished stone in history

Gem Diamonds Unearths 127carat

The International Gemological Institute appoints Avi Levy president of North American business

Tiffany & Co. grows its presence in China

Chow Sang Sang to open new stores in mainland China by the end of the year

Gemfields Zambia Emerald Auction Achieves $19M

NCDIA to Hold Colored-Diamond Seminar

Sotheby’s to Sell 100ct. Yellow-Diamond Necklace

Jewelers Board of Trade appoints Erich Jacobs president

Pink diamond weighing more than 10 carats to go under the hammer at Sotheby’s Hong Kong sale

Alrosa Offers 15ct. Purple-Pink Diamond

Tiffany & Co. will open its doors in India

Pink fancy-color diamonds outperformed major colour categories

Dubai Set to Improve Diamond Tender Offering

US Retail Sales Grow in June

Chow Tai Fook China Sales Rise

Women’s Jewelry Association reveals winners of 2019 Excellence Awards scholarships

Rio Tinto Unveils Roster of Pink Diamonds

India introduces import classification code for lab-grown rough diamonds

Forevermark Unveils New Bridal Campaign

Gucci makes its move into high jewelry

Global Diamond Production Value Rises

GIA Expands China Education Programs

The price millennials are willing to pay for an engagement ring

Luxury Goods Market Grows 6% in 2018

Christie’s sale brings in more than $109 million

HRD Antwerp launches drop-off center in London’s Hatton Garden

Sotheby’s auction included pieces by Harry Winston, Van Cleef & Arpels, Tiffany & Co. and Buccellati

MJSA Picks 14 Vision-Award Winners

GIA to offer provenance reports for coloured diamonds

Sotheby’s to Sell Treasure Chest of Luxury Watches

RapNet Offers Jewelry Trading to the Industry

11ct. Purple Expected to Fetch Over $10M

Watches of Switzerland to Go Public

Chow Tai Fook Launches US Hub

Pink Diamond Prices Firm in 1Q

US Retail Market Rebounds in March

LVMH Moët Hennessy Louis Vuitton to participate in Baselworld 2020

Americans will shell out $5.2 billion on Mother’s Day Sales

The Natural Color Diamond Association Announces Advisory Board

Botswana Unveils 20ct. Okavango Blue Diamond

Bonhams Auctions Original Cullinan Agreement

Graff Reveals 302ct. Diamond from Lesedi La Rona

US Trade Confident as Polished Imports Surge

Christie’s to sell historic tiara

Silver-jewelry sales rise for 10th consecutive year

The American Gem Society (AGS) to honor three industry leaders at its Circle of Distinction dinner

Women in Luxury Conference to be held in New York on May 9

DPA launches e-learning course for retail associates

Alrosa Testing Payments in Euros

US retail sales bounce back

Hong Kong Luxury Sales Rise in January

$15.5M Diamond Crown for sale on RapNet

Rough-to-Polished Gem Tracker Launched

First China-Israel Diamond Week to take place in Shenzhen

Flawless white diamond estimated at $13 million to lead auction at Sotheby’s

Gemmological Association of Great Britain expands to US market

$20.7 billion on gifts this Valentine’s Day by US

HRD Grades First Lab-Grown All-Diamond Ring

Boaz Moldawsky Elected IDI Chairman

Reduced supply of vivid-yellow diamonds to drive price increase this year

Mouawad Dragon – largest of its shape and color GIA has ever graded

The Gemological Institute of America to expand Colored Stone Identification & Origin Report services

Regina Ciarleglio new director of membership, Jewelers of America (JA)

Belgium Prepares for ‘No-Deal’ Brexit

Alrosa resumes diamond-mining in Zimbabwe

27-carat rough diamond recovered from Karowe mine

January Jewellery Sales on the rise

Dr. James Shigley receives GIA Top Honor Award

India to Promote Jewellery in UAE

Nilesh Sheth to Continue as IDCA President

Diamond Polishing Facilities planned in Angola & Zimbabwe

Rare Opal Contains Trapped Insect

HRD to Open First Middle East Jewellery Lab

Christie’s 2018 jewellery sales hit US$492.3m

Dominion Unearths 553ct. Yellow Diamond

India Strengthens Position in Diamond Cutting

Gem Group Clarifies Sapphire Colour Requirement

Canada’s NWT Lifts Polishers’ Export Ban

29.53-carat diamond leads HK sale

53 million US consumers to buy a diamond during festive period

Sapphire Necklace Sells for $15M

Cyber Monday – largest US online shopping day of all time

Belgium Exports Rise Amid Higher Average Price

India’s polished diamond exports on the rise

Gemfields Sells 5,655ct. Emerald at Auction

Ethiopia – new sapphire and emerald source

China reports 4.7% rise in Oct jewellery sales

Pink Legacy fetches US$50m

24ct. Diamond to Lead Bonhams Auction

14ct. Diamond ring sold for more than double at Fellows

Graff to Unveil Polished from 1,109ct. Lesedi La Rona

Bulgari Fancy Vivid Blue to lead Christie’s New York auction

Alibaba Signes Deal with Antwerp Trade

The Peacock Necklace leads Christie’s Magnificent Jewels auction

Rapaport Weekly Market Comment

A blue diamond will go under the hammer at Sotheby’s

Gemfields reveals 5.65-carat ‘Inkalamu’ emerald

Alrosa Joins De Beers Blockchain

Signet Sells First ‘Conflict-Free’ DRC Gold

Rapaport Weekly Market Comment

CIBJO Urges Diamond Consultation with FTC

Istanbul Fair reports strong buyer turnout

Lozenge Emerald sold for more than double at Sotheby’s

Christie’s to Sell 24ct. Marilyn Monroe Diamond

Coloured gem blockchain system takes off in 2019

CIBJO Urges Better Control of Gemstone Supply

GIA scientists uncover new mineral

Gemfields highlights responsible sourcing

RJC Signs Deal with Artisanal Gold Miners

Blue Sells for $14M at Sotheby’s Hong Kong

GSI Opens Hong Kong Lab

HK’s jewellery exports up 18.4%

Emerald Diamond sold at NY Auction

19ct. Oppenheimer Pink Diamond Could Set Records

Platinum jewellery demand grows

Rapaport Weekly Market Comment

Millennial and Gen Z generations accounted for two-thirds of global diamond jewellery sales

JNA Awards 2018

DEF Establishes First Scholarship

GIA & Chow Tai Fook Unveil Digital Grading Report

HKJMA celebrates 30th anniversary

Antwerp Polished Diamond Trade Generates Value Gains

AWDC Antwerp Summer University welcomes students

Rapaport Weekly Market Comment

Hong Kong Jewellery sales stay positive

India will overtake US in 2018 Jewelry Sales

Japan’s First Synthetics Production

More Synthetic Warnings

Coloured gems will dazzle at September Fair

Sarine Opens Service Center in Japan

Gold price drop could prompt jewellery buying

TrueFacet to list preowned luxury items

IGT Thailand opens facility in Bangkok

Rio Tinto has begun mining new pipe at Diavik Mine

Rapaport Weekly Market Report

138-carat rough diamond found in Lesotho

GJEPC opens an office in China’s Shenzhen Rough Diamond Exchange

7.16-carat Russian emerald takes top prize

Prices of fancy colour diamonds steady in Q2

GIA to Issue $2M in Scholarships

Israel Bourse Bans Traders for Synthetics Swapping

Greater China Luxury Continues to Grow

New Jewellery Show Comes to NY

Industry Hopes to Appeal FTC Guidelines

Israel’s Polished Exports Fall

Indian Banks Cut Lending by 10%

Indian Gem Center Rebrands as IIG

Zimbabwe Output Rises

Rapaport Weekly Market Comment

New York Shows Unite in One Location

Belgian polished trade in upward trend

WJA reveals the winners of 2018 Excellence Awards scholarships

Canada Lifts Global Diamond Production in 2017

Largest Pink Synthetic gets GIA Grade

Israel Urges India to Reduce Diamond Tax

World Diamond Congress Set for Mumbai

Rapaport Market Comment

Rapaport Academy Launches Marketing Courses

Israel Bourse Ends Cryptocurrency Deal

India’s Polished Exports Rise in May

New JewelPoint Event to launch this year

Chinese Bourse Hosts India Diamond Week

Rise in Sales in US Jewellery Stores

Synova Opens Diamond-Cutting Center in Mumbai

Lift in Luxury in Hong Kong and China

Rapaport: Laser Firm Addresses Diamond Counterfeiting

Royal Diamond Tiara to be auctioned at Christie’s

$20M Diamond Reserve generated by New Cryptocurrency

31% rise in visitor numbers of Shenzhen Fair

US Consumers: synthetics are not real

Rapaport: Farnese Blue diamond smashed its pre-sale estimate at Sotheby’s

Fancy Blues pricing jumped 5%

Gem Genève trade fair hailed as a success

Jump in Polished Imports in Hong Kong

DDA Trading to offer 4000cts at the May Polished Diamond Tender

VAT reverse-charge in UAE

Sales and profit growing sharply at Tse Sui Luen, Hong Kong

Israel Extends Tax-Free Inspection Period

Jewellery industry icon graced Antwerp expo

Iris Alexander Finest Diamond Jewellery Dubai Launch

The grace and symbolism of dragonflies in jewellery

GIA Opens Synthetics-Testing Center Inside Stuller

$500M to be invested into New Diamond Fund

US-China Trade War won’t impact Diamonds

Rapaport: Sotheby’s to Sell Two Large D-Flawless Diamonds

Hong Kong Polished Imports Rise

JVC will Launch Legal-Info Webinars

Hong Kong Jewelry Sales Rise due to Tourism Increase

Sotheby’s to Sell 33ct. Flawless Diamond Necklace

Israel’s Get Diamonds Forms China Partnership

Christie’s to Auction 8ct. Pink Diamond Ring

Royal Blue Diamond Surfaces After 300 Years

Phillips to Open First Gallery in Asia

India’s Polished Exports Edge Up

Rapaport: US Polished Trade Picks Up in January

Sotheby’s Hong Kong to Sell 14ct. Blue Diamond

“Lesotho Legend” sells for $40M in Antwerp

DPA Eyes Chinese Millennial Market

10.4% rise in Jewellery sales in HK in January 2018

Belgium Sees Rise in Polished Trade

Jewellery park to be built in Mumbai

Ethically-Sourced Gem Fair Comes to UK

Strong Rough Trade Boosts Antwerp Rough Diamond Days

$284M Boost to Diamond Trade

GJEPC Predicts Strong Year for Jewellery

IMDH To Auction 35,000 Carats of Namibian Marine Diamonds

Traders Optimistic at Israel Diamond Week

Sotheby’s Offers Rare 102ct Diamond

Consumers plan to spend $19.6 billion on gifts this Valentine’s Day

Diamond Prices Rise in January

Blue Diamonds Push Fancy Colour Index Up Slightly in Q4 2017

Chinese New Year Boosts Jewellery Sales

Chinese Millennials: Diamonds Symbolize Empowerment, Not Just Marriage

Bharat Diamond Bourse (BDB) to host its first Indian Diamond Week

CARAT+ in Antwerp in May 2018

DDA Trading Bvba is pleased to announce its first Polished Diamond Tender

Diamond Dealers Club (DDC) of New York moves into its new home

Sapphire Ring Seals Royal Engagement

India’s Diamond Trade Grows in 2017

Automated Diamond Grading Lab to open in Israel

#No Glass Ceiling

Diamond Cryptocurrencies to launch in Israel

DDA Trading To Auction 25,000 Carats of Namibian Marine Diamonds

Gübelin will Build Gemstone Blockchain

GIA Unveils Plans for Labs in Surat and Antwerp

Hong Kong Exports expected to grow in 2018

Diamond Prices Steady in December

Impressive Season for Retail

Iris Alexander 2018 Fine Diamond Jewellery Collection held at The Ritz London on 12 December

Antwerp Diamond Trade is Solid in November

Blue Diamond Sells for $15M at Sotheby’s NY

Optimism Rises as Holiday Season Begins

Mobile-Savvy Millennials Drive Cyber Monday Jump

Christie’s Hong Kong Sells Pink Diamond for $32M

DDA Trading To Auction 22,000 Carats of Namibian Marine Diamonds

Meghan Markle’s Ring

Pink-Purple Diamond Ring Goes For $1.2M

Hong Kong Polished Trade Improves

Historic Yellow Diamonds to Auction

The making of Louis Vuitton Conquêtes necklace

Flawless 163.41-carat Diamond Breaks Record at Christie’s