Heart|Natural|IGI

1.21ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 788607601

Shape and cutting style on the report: Heart brilliant

Certificate IGI 788607601

Diamond specifications and retailer prices

From $1,798 USD

As of November 4, 2026

Save $3,056 USD (63%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $4,854 USD at NZ Jewellers · As of November 3, 2026

View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 788607601. Listed at 16 retailers as of November 3, 2026, with prices from $1,798 to $4,854, a $3,056 spread on the same certified stone. NZ Jewellers lists it at $4,854. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21

Carat

Color

SI1

Clarity

Very Good

Cut

Specifications

CutVery Good

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle37.3°

Pavilion angle41.6°

OriginNatural

Grading LabIGI

CertificateIGI 788607601

Dimensions6.57 × 7.20 × 4.42 mm

L/W Ratio1.10

Girdle conditionFaceted

Culet sizePointed

View IGI Report →View Loupe360 Video →

Top View

OriginNatural

CutVery Good

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI 788607601

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4

Current: $4,854 USD|Low: $1,798 USD|High: $4,854 USD|Avg: $2,519 USD|+13.2%

NZ Jewellers

Retailer 2

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Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

November 4, 2026

Retailer 3$1,798 USD

Retailer 7$1,836 USD

Retailer 13$1,941 USD

Retailer 16$1,981 USD

Retailer 10$1,990 USD

Retailer 2$2,025 USD

Retailer 8$2,051 USD

Retailer 12$2,082 USD

Retailer 4$2,089 USD

Retailer 14$2,128 USD

Retailer 11$2,202 USD

Retailer 5$2,296 USD

Retailer 6$2,445 USD

Retailer 9$2,706 USD

Retailer 15$3,486 USD

NZ Jewellers$4,854 USD

30 data points across 16 retailers

16 retailers$1,798 USD to $4,854 USD

Cheapest Retailer

$1,798 USD

Retailer 2

$1,836 USD

View

Final sale: no returns

Retailer 3

$1,941 USD

View

B+

Retailer 4

$1,981 USD

View

Retailer 5

$1,990 USD

View

B+

Retailer 6

$2,025 USD

View

B+

Retailer 7

$2,051 USD

View

B+

Retailer 8

$2,082 USD

View

B+

Retailer 9

$2,089 USD

View

B+

Retailer 10

$2,128 USD

View

B+

Retailer 11

$2,202 USD

View

B+

Retailer 12

$2,296 USD

View

B+

Retailer 13

$2,445 USD

View

Retailer 14

$2,706 USD

View

Retailer 15

$3,486 USD

View

Most Expensive

NZ Jewellers

e7f57f2b-408c-44ac-805d-a1c3ad3009ff · Nov 3

$4,854 USD

View

15 more retailers have this diamond

Prices start from $1,798 USDSave up to $3,056 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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1.21ct Heart

$1,798 USD