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Round|Natural|IGI

1.51ct F SI2 Round Natural Diamond

VG • F/SI2 • IGI 487189405

Shape and cutting style on the report: Round brilliant

Certificate IGI 487189405

Diamond specifications and retailer prices

From $9,868 AUD
₹658,629 INR
As of November 2, 2026
Save $12,070 AUD (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $21,938 AUD at Diamond Quarter · As of November 2, 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 F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 487189405. Listed at 20 retailers as of November 2, 2026, with prices from $9,868 to $21,938, a $12,070 spread on the same certified stone. Diamond Quarter lists it at $21,938. 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

1.51
Carat
F
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36.5°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 487189405
Dimensions7.24 × 7.17 × 4.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.24 mm7.17 mm1.51 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 487189405
Side View
Table 59.5%Crown 36.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.9%

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 2
Current: $9,868 AUD|Low: $9,848 AUD|High: $21,779 AUD|Avg: $13,788 AUD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 1$9,868 AUD
Retailer 7$11,051 AUD
Retailer 12$11,110 AUD
Retailer 9$12,019 AUD
Retailer 11$12,020 AUD
Retailer 2$13,022 AUD
Retailer 10$13,222 AUD
Retailer 8$13,459 AUD
Retailer 5$13,825 AUD
Retailer 4$15,025 AUD
Retailer 6$18,149 AUD
Retailer 3$21,779 AUD

45 data points across 12 retailers

20 retailers$9,868 AUD to $21,938 AUD

B+
Cheapest Retailer
-
$9,868 AUD
₹658,629 INR
B+
Retailer 2
-
$11,051 AUD
$7,745 USD
View
B+
Retailer 3
-
$11,110 AUD
$7,786 USD
View
B+
Retailer 4
-
$11,255 AUD
$7,888 USD
View
B
Retailer 5
-
$12,019 AUD
$8,423 USD
View
Final sale: no returns
Retailer 6
-
$12,020 AUD
$8,424 USD
View
Price last confirmed 9 days ago
Retailer 7
-
$13,022 AUD
$9,126 USD
View
Price last confirmed 11 days ago
Retailer 8
-
$13,022 AUD
$9,126 USD
View
Price last confirmed 46 days ago
Retailer 9
-
$13,022 AUD
$9,126 USD
View
Price last confirmed 47 days ago
Retailer 10
-
$13,222 AUD
$9,266 USD
View
Price last confirmed 11 days ago
B
Retailer 11
-
$13,309 AUD
$9,327 USD
View
B
Retailer 12
-
$13,825 AUD
£7,629 GBP
View
Retailer 13
-
$15,025 AUD
$10,530 USD
View
Price last confirmed 44 days ago
Retailer 14
-
$15,025 AUD
$10,530 USD
View
Price last confirmed 10 days ago
Retailer 15
-
$15,025 AUD
$10,530 USD
View
Price last confirmed 49 days ago
B
Retailer 16
-
$18,149 AUD
£10,015 GBP
View
Retailer 17
-
$21,779 AUD
$15,263 USD
View
Price last confirmed 42 days ago
Retailer 18
-
$21,779 AUD
$15,263 USD
View
Price last confirmed 10 days ago
Retailer 19
-
$21,779 AUD
$15,263 USD
View
Price last confirmed 49 days ago
Most Expensive
C
Diamond Quarter
1.51SI2F480558E2N · Nov 2
$21,938 AUD
£12,106 GBP
View
19 more retailers have this diamond
Prices start from $9,868 AUDSave up to $12,070 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.

B+
1.51ct Round
$9,868 AUD