Round|Natural|GIA

0.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7553393622

Certificate GIA 7553393622

Diamond specifications and retailer prices

From $904 AUD

$635 USD

As of October 27, 2026

Save $2,134 AUD (70%) vs most expensive(unlock to see where)

24 retailers carry this diamond

Most expensive: $3,038 AUD at NZ Jewellers · As of October 27, 2026

View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7553393622. Listed at 24 retailers as of October 27, 2026, with prices from $904 to $3,038, a $2,134 spread on the same certified stone. NZ Jewellers lists it at $3,038. 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

0.51

Carat

Colour

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceFaint

Crown angle35°

Pavilion angle41.2°

OriginNatural

Grading LabGIA

CertificateGIA 7553393622

Dimensions5.08 × 5.10 × 3.21 mm

L/W Ratio1.00

Culet sizeNone

Key to symbols

Cloud

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceFaint

CertificateGIA 7553393622

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

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

Price History

Last verified: Oct 27

Current: $1,294 AUD|Low: $675 AUD|High: $2,264 AUD|Avg: $1,270 AUD|+1.6%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

October 28, 2026

Retailer 8$675 AUD

Retailer 10$945 AUD

Retailer 2$1,028 AUD

Retailer 4$1,146 AUD

Retailer 5$1,182 AUD

Retailer 3$1,260 AUD

Retailer 1$1,294 AUD

Retailer 9$1,457 AUD

Retailer 6$1,492 AUD

Retailer 7$2,249 AUD

35 data points across 10 retailers

24 retailers$904 AUD to $3,038 AUD

Cheapest Retailer

$904 AUD

$635 USD

Retailer 2

$914 AUD

$642 USD

View

Retailer 3

$945 AUD

$664 USD

View

Price last confirmed 7 days ago

Retailer 4

$945 AUD

$664 USD

View

Price last confirmed 7 days ago

B+

Retailer 5

$964 AUD

$677 USD

View

B+

Retailer 6

$1,012 AUD

$711 USD

View

B+

Retailer 7

$1,028 AUD

$722 USD

View

Retailer 8

$1,035 AUD

$727 USD

View

Price last confirmed 7 days ago

B+

Retailer 9

$1,073 AUD

$754 USD

View

B+

Retailer 10

$1,110 AUD

$780 USD

View

B+

Retailer 11

$1,110 AUD

$780 USD

View

B+

Retailer 12

$1,146 AUD

$805 USD

View

B+

Retailer 13

$1,153 AUD

$810 USD

View

B+

Retailer 14

$1,160 AUD

$815 USD

View

B+

Retailer 15

$1,182 AUD

£654 GBP

View

B+

Retailer 16

$1,227 AUD

$862 USD

View

B+

Retailer 17

$1,260 AUD

£697 GBP

View

B+

Retailer 18

$1,294 AUD

€866 EUR

View

B+

Retailer 19

$1,350 AUD

$948 USD

View

Retailer 20

$1,457 AUD

View

Price last confirmed 29 days ago

B+

Retailer 21

$1,492 AUD

ZAR 16,926 ZAR

View

Retailer 22

$2,249 AUD

£1,244 GBP

View

Retailer 23

$2,782 AUD

CA$2,715 CAD

View

Most Expensive

NZ Jewellers

345bfcde-ed97-42b4-ac88-7a1a1bb92407 · Oct 27

$3,038 AUD

$2,134 USD

View

23 more retailers have this diamond

Prices start from $904 AUDSave up to $2,134 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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0.51ct Round

$904 AUD