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Round|Natural|GIA

1.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 1242017096

Certificate GIA 1242017096

Diamond specifications and retailer prices

From $10,074 AUD
$7,060 USD
As of November 1, 2026
Save $4,104 AUD (29%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $22,241 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

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 top-tier cut grade and certified by GIA 1242017096. Listed at 14 retailers as of November 1, 2026, with a 41% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1242017096
Dimensions7.27 × 7.31 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.27 mm7.31 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242017096
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

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: $12,984 AUD|Low: $10,074 AUD|High: $18,756 AUD|Avg: $12,941 AUD|+6.2%
Retailer 1
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
November 2, 2026
Retailer 4$10,074 AUD
Retailer 6$10,699 AUD
Retailer 5$10,918 AUD
Retailer 9$11,121 AUD
Retailer 2$11,850 AUD
Retailer 14$12,328 AUD
Retailer 1$12,984 AUD
Retailer 10$13,213 AUD
Retailer 11$13,213 AUD
Retailer 12$13,655 AUD
Retailer 7$13,746 AUD
Retailer 3$14,178 AUD
Retailer 13$14,643 AUD
Retailer 8$18,756 AUD

38 data points across 14 retailers

14 retailers$10,074 AUD to $14,178 AUD

B+
Cheapest Retailer
-
$10,074 AUD
$7,060 USD
B+
Retailer 2
-
$10,699 AUD
$7,498 USD
View
B+
Retailer 3
-
$10,918 AUD
CA$10,627 CAD
View
Retailer 4
-
$12,047 AUD
$8,443 USD
View
Price last confirmed 32 days ago
Retailer 5
-
$12,233 AUD
$8,573 USD
View
Price last confirmed 34 days ago
B+
Retailer 6
-
$12,328 AUD
$8,640 USD
View
B
Retailer 7
-
$12,768 AUD
$8,948 USD
View
B+
Retailer 8
-
$12,984 AUD
£7,165 GBP
View
B+
Retailer 9
-
$13,746 AUD
€9,175 EUR
View
Retailer 10
-
$13,901 AUD
$9,742 USD
View
Price last confirmed 34 days ago
B
Retailer 11
-
$14,178 AUD
$9,936 USD
View
Retailer 12
-
$14,643 AUD
$10,262 USD
View
Price last confirmed 32 days ago
Retailer 13
-
$18,756 AUD
£10,350 GBP
View
Price last confirmed 33 days ago
Most Expensive
NZ Jewellers
cd07d860-0138-4b01-aa21-a8bee6ea6b1c · Sep 28
$22,241 AUD
$15,587 USD
View
Price last confirmed 36 days ago
13 more retailers have this diamond
Prices start from $10,074 AUDSave up to $4,104 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
$10,074 AUD