Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2427279307

Certificate GIA 2427279307

Diamond specifications and retailer prices

From $12,736 CAD

$9,100 USD

As of October 25, 2026

Save $13,800 CAD (52%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: $26,537 CAD at Diamond Quarter · As of October 29, 2026

View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2427279307. Listed at 19 retailers as of October 25, 2026, with prices from $12,736 to $26,537, a $13,800 spread on the same certified stone. Diamond Quarter lists it at $26,537. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51

Carat

Color

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle32°

Pavilion angle41.4°

OriginNatural

Grading LabGIA

CertificateGIA 2427279307

Dimensions7.41 × 7.37 × 4.53 mm

L/W Ratio1.01

Star length50%

Lower girdle80%

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 2427279307

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: Oct 25

Current: $15,108 CAD|Low: $12,736 CAD|High: $22,023 CAD|Avg: $16,730 CAD|-0.3%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

October 29, 2026

Retailer 6$12,736 CAD

Retailer 8$12,928 CAD

Retailer 9$13,786 CAD

Retailer 1$15,108 CAD

Retailer 5$15,341 CAD

Retailer 4$16,678 CAD

Retailer 2$17,237 CAD

Retailer 7$20,225 CAD

Retailer 3$21,877 CAD

44 data points across 9 retailers

19 retailers$12,736 CAD to $26,537 CAD

B+

Cheapest Retailer

$12,736 CAD

$9,100 USD

B+

Retailer 2

$12,928 CAD

$9,237 USD

View

B+

Retailer 3

$13,786 CAD

$9,850 USD

View

B+

Retailer 4

$13,934 CAD

$9,956 USD

View

B+

Retailer 5

$15,095 CAD

$10,785 USD

View

B+

Retailer 6

$15,108 CAD

£8,499 GBP

View

B+

Retailer 7

$15,327 CAD

$10,951 USD

View

B+

Retailer 8

$15,341 CAD

A$16,864 AUD

View

B+

Retailer 9

$16,333 CAD

$11,670 USD

View

B+

Retailer 10

$16,333 CAD

$11,670 USD

View

B+

Retailer 11

$16,678 CAD

€11,349 EUR

View

B+

Retailer 12

$17,237 CAD

£9,697 GBP

View

Retailer 13

$17,418 CAD

$12,445 USD

View

Retailer 14

$18,237 CAD

$13,030 USD

View

Retailer 15

$18,333 CAD

$13,099 USD

View

Retailer 16

$20,225 CAD

ZAR 233,452 ZAR

View

Price last confirmed 12 days ago

Retailer 17

$21,877 CAD

£12,308 GBP

View

Retailer 18

$23,224 CAD

$16,593 USD

View

Most Expensive

Diamond Quarter

1.51SI1E2407034AN · Oct 29

$26,537 CAD

£14,929 GBP

View

18 more retailers have this diamond

Prices start from $12,736 CADSave up to $13,800 CAD

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+

1.51ct Round

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