Heart|Natural|GIA

2.51ct G SI1 Heart Natural Diamond

GD • G/SI1 • GIA 3525628956

Certificate GIA 3525628956

Diamond specifications and retailer prices

From $21,307 AUD

As of November 1, 2026

Save $15,427 AUD (42%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: $36,734 AUD at MOH London · As of November 7, 2026

View at MOH London

About this 2.51ct natural heart diamond

This 2.51ct natural heart sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 3525628956. Listed at 18 retailers as of November 1, 2026, with prices from $21,307 to $36,734, a $15,427 spread on the same certified stone. MOH London lists it at $36,734. 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

2.51

Carat

Colour

SI1

Clarity

Good

Cut (retailer stated)

Specifications

Cut (retailer stated)Good

PolishExcellent

SymmetryVery Good

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 3525628956

Dimensions7.99 × 7.25 × 4.95 mm

L/W Ratio1.10

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutGood

PolishExcellent

SymmetryVery Good

FluorescenceNone

CertificateGIA 3525628956

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

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

Price History

Last verified: Nov 1

Current: $36,734 AUD|Low: $21,307 AUD|High: $37,377 AUD|Avg: $26,871 AUD|-1.6%

MOH London

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

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Retailer 17

November 7, 2026

Retailer 16$21,307 AUD

Retailer 7$21,739 AUD

Retailer 8$21,847 AUD

Retailer 6$22,662 AUD

Retailer 9$23,155 AUD

Retailer 4$23,844 AUD

Retailer 2$24,238 AUD

Retailer 13$24,352 AUD

Retailer 3$24,815 AUD

Retailer 5$25,177 AUD

Retailer 11$25,357 AUD

Retailer 14$28,530 AUD

Retailer 10$29,622 AUD

Retailer 12$29,973 AUD

Retailer 15$32,471 AUD

Retailer 17$35,580 AUD

MOH London$36,734 AUD

32 data points across 17 retailers

18 retailers$21,307 AUD to $36,734 AUD

B+

Cheapest Retailer

$21,307 AUD

B+

Retailer 2

$21,739 AUD

View

B+

Retailer 3

$21,847 AUD

View

B+

Retailer 4

$22,662 AUD

View

Final sale: no returns

B+

Retailer 5

$23,155 AUD

View

B+

Retailer 6

$23,844 AUD

View

B+

Retailer 7

$24,238 AUD

View

B+

Retailer 8

$24,352 AUD

View

Retailer 9

$24,815 AUD

View

Price last confirmed 15 days ago

B+

Retailer 10

$25,177 AUD

View

B+

Retailer 11

$25,256 AUD

View

B+

Retailer 12

$25,357 AUD

View

B+

Retailer 13

$28,530 AUD

View

Retailer 14

$29,622 AUD

View

Retailer 15

$29,973 AUD

View

Retailer 16

$32,471 AUD

View

Retailer 17

$35,580 AUD

View

Price last confirmed 10 days ago

Most Expensive

MOH London

74CF73489 · Nov 7

$36,734 AUD

£19,874 GBP

View

17 more retailers have this diamond

Prices start from $21,307 AUDSave up to $15,427 AUD

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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B+

2.51ct Heart

$21,307 AUD