River Stone DiamondsPrivate Consultation

The River Stone collection

A more discerning
standard for diamonds.

We personally review the details that matter: grade, proportions, media, growth method and availability, before a stone enters this collection.

A considered selection of CVD and HPHT lab-grown diamonds, including fancy colors, with final availability and order details confirmed before any order is finalized.

Search a certificate number from any diamond listing. We’ll open the matching River Stone page when it is currently available.

Explore our guides: loose IGI-certified diamonds · IGI certificate lookup · fancy-color diamonds · colored-diamond pricing.

Looking for several stones? Ask the Diamond Concierge for different shapes and carat weights in one request—for example, a 1.5 ct round, a 2 ct pear and a 3 ct emerald. Available matches appear together on one results page.

Shape
Choose one or more shapesEach shape enters the collection only after passing its own screening standard.
All shapes
Antique & specialty shapesExplore distinctive outlines that are currently available in the collection.
25 available shapes

Personally screened selection

Find the one that feels inevitable.

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RSD screened color
D-FEvery stone shown meets this color screen.
RSD screened clarity
VS2 or better for fancy colorColorless stones remain IF / VVS1 / VVS2 / VS1.
Reset search

Screened collection

Explore selected diamonds

Showing all 5,088 matching diamonds.

Refine the viewReturn to RSD SelectionShow considered shortlist

How RSD Selection worksWe begin with a curated shortlist. Every diamond shown passes our IGI, media, availability, growth-method and finish screens. Colorless stones stay within our stricter fluorescence screen; fancy-color stones retain the fluorescence grade reported on the certificate, including when it is not reported. RSD Selection places the strongest screened profiles first; it is a considered starting point—not a claim that one diamond is universally best.

Selected Marquises

6 shown

1.22 carat Marquise lab-grown diamond, IGI report LG811631519

RSD Selection Shown first for its screened grade profile

IGI report LG811631519

RSD-ABB18599B1B2

1.22 ct Marquise

Fancy Brown colorVVS2 clarityIGICVD

RSD Selection Score88/100Evidence complete
$749$614/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG811631519
1.17 carat Marquise lab-grown diamond, IGI report LG795699997

IGI report LG795699997

RSD-3CD8DA292215

1.17 ct Marquise

Fancy Brown colorVVS2 clarityIGICVD

RSD Selection Score94/100Evidence complete
$699$597/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG795699997
1.11 carat Marquise lab-grown diamond, IGI report LG795699985

IGI report LG795699985

RSD-7067B90BB3DB

1.11 ct Marquise

Fancy Intense Brown colorVVS2 clarityIGICVD

RSD Selection Score94/100Evidence complete
$599$540/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG795699985
1 carat Marquise lab-grown diamond, IGI report LG797674947

IGI report LG797674947

RSD-8F8155A35702

1.00 ct Marquise

Fancy Vivid Brown colorVVS2 clarityIGICVD

RSD Selection Score94/100Evidence complete
$599$599/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG797674947
2.55 carat Marquise lab-grown diamond, IGI report LG764697352

IGI report LG764697352

RSD-5BF37D661BC7

2.55 ct Marquise

Fancy Vivid Pink colorVS1 clarityIGICVD

RSD Selection Score93/100Evidence complete
$1,099$431/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG764697352
1.02 carat Marquise lab-grown diamond, IGI report LG797607399

IGI report LG797607399

RSD-34202FD34422

1.02 ct Marquise

Fancy Brown colorVS1 clarityIGICVD

RSD Selection Score93/100Evidence complete
$649$636/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG797607399

Selected Marquise Step Cuts

24 shown

5.11 carat Marquise Step Cut lab-grown diamond, IGI report LG793615529

RSD Selection Shown first for its screened grade profile

IGI report LG793615529

RSD-8A1933EA5602

5.11 ct Marquise Step Cut

D colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,799$548/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG793615529
5.04 carat Marquise Step Cut lab-grown diamond, IGI report LG794689309

IGI report LG794689309

RSD-08A243042945

5.04 ct Marquise Step Cut

D colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,799$555/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG794689309
4.61 carat Marquise Step Cut lab-grown diamond, IGI report LG825699937

IGI report LG825699937

RSD-2644725FBA56

4.61 ct Marquise Step Cut

D colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,199$477/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG825699937
2.05 carat Marquise Step Cut lab-grown diamond, IGI report LG791642930

IGI report LG791642930

RSD-A8D9370EFDA0

2.05 ct Marquise Step Cut

E colorVVS1 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$899$439/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG791642930
5.05 carat Marquise Step Cut lab-grown diamond, IGI report LG830635115

IGI report LG830635115

RSD-11E5A72C16D1

5.05 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,799$554/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG830635115
4.83 carat Marquise Step Cut lab-grown diamond, IGI report LG819659259

IGI report LG819659259

RSD-A99FA4AA4FEC

4.83 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,299$476/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG819659259
4.18 carat Marquise Step Cut lab-grown diamond, IGI report LG819613877

IGI report LG819613877

RSD-B3447E35D0B8

4.18 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,999$478/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG819613877
4.1 carat Marquise Step Cut lab-grown diamond, IGI report LG821659921

IGI report LG821659921

RSD-777ADD46B788

4.10 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,999$488/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG821659921
3.18 carat Marquise Step Cut lab-grown diamond, IGI report LG851682849

IGI report LG851682849

RSD-0A9CF731A99E

3.18 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,599$503/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG851682849
2.54 carat Marquise Step Cut lab-grown diamond, IGI report LG821610785

IGI report LG821610785

RSD-0EDE2172B0D0

2.54 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,099$433/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG821610785
2.44 carat Marquise Step Cut lab-grown diamond, IGI report LG821610832

IGI report LG821610832

RSD-CE0280B4DE4A

2.44 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,099$450/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG821610832
2.15 carat Marquise Step Cut lab-grown diamond, IGI report LG826667966

IGI report LG826667966

RSD-0EA67C50DD83

2.15 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$899$418/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG826667966
2.1 carat Marquise Step Cut lab-grown diamond, IGI report LG801620417

IGI report LG801620417

RSD-2FEEA4C07093

2.10 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$899$428/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG801620417
2.1 carat Marquise Step Cut lab-grown diamond, IGI report LG835638479

IGI report LG835638479

RSD-D4BBC213FFE3

2.10 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$899$428/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG835638479
2.06 carat Marquise Step Cut lab-grown diamond, IGI report LG821610738

IGI report LG821610738

RSD-5F19E0125909

2.06 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$899$436/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG821610738
1.95 carat Marquise Step Cut lab-grown diamond, IGI report LG821610702

IGI report LG821610702

RSD-A6DB8052C60B

1.95 ct Marquise Step Cut

E colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$799$410/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG821610702
4.28 carat Marquise Step Cut lab-grown diamond, IGI report LG828641840

IGI report LG828641840

RSD-83614331BB90

4.28 ct Marquise Step Cut

E colorVS1 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,099$490/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG828641840
3.29 carat Marquise Step Cut lab-grown diamond, IGI report LG826614926

IGI report LG826614926

RSD-B0583A18B518

3.29 ct Marquise Step Cut

E colorVS1 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,499$456/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG826614926
2.63 carat Marquise Step Cut lab-grown diamond, IGI report LG792685154

IGI report LG792685154

RSD-70996CAABA90

2.63 ct Marquise Step Cut

E colorVS1 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,099$418/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG792685154
2.14 carat Marquise Step Cut lab-grown diamond, IGI report LG830602996

IGI report LG830602996

RSD-24CFBE0D9818

2.14 ct Marquise Step Cut

E colorVS1 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$899$420/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG830602996
5.22 carat Marquise Step Cut lab-grown diamond, IGI report LG830635114

IGI report LG830635114

RSD-30268C93186A

5.22 ct Marquise Step Cut

F colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,799$536/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG830635114
5.13 carat Marquise Step Cut lab-grown diamond, IGI report LG826669391

IGI report LG826669391

RSD-F614014B8AA0

5.13 ct Marquise Step Cut

F colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,799$546/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG826669391
4.68 carat Marquise Step Cut lab-grown diamond, IGI report LG816650345

IGI report LG816650345

RSD-A4BA2D30DFE6

4.68 ct Marquise Step Cut

F colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$2,299$491/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG816650345
4.07 carat Marquise Step Cut lab-grown diamond, IGI report LG821662117

IGI report LG821662117

RSD-183B83EFAF5A

4.07 ct Marquise Step Cut

F colorVVS2 clarityIGICVD

RSD Selection ScoreEvidence incompleteReview the detail page for the missing fields.
$1,999$491/ctCurrent price. No artificial markdowns.Availability confirmed before any order.
Preview IGI report LG821662117

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