Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 5231846819

Certificate GIA 5231846819

Diamond specifications and retailer prices

From $9,118 AUD
$6,390 USD
As of October 28, 2026
Save $7,188 AUD (44%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $16,306 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231846819. Listed at 22 retailers as of October 28, 2026, with prices from $9,118 to $16,306, a $7,188 spread on the same certified stone. MOH London lists it at $16,306. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle38.6°
OriginNatural
Grading LabGIA
CertificateGIA 5231846819
Dimensions8.93 × 6.37 × 4.02 mm
L/W Ratio1.40
Top View
8.93 mm6.37 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5231846819
Side View
Table 56.0%CrownGirdle: MED-THKPavilion 38.6°Culet: NoneDepth 63.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: $16,306 AUD|Low: $8,383 AUD|High: $18,286 AUD|Avg: $10,855 AUD|+6.3%
MOH London
Retailer 2
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Retailer 4
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Retailer 11
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Retailer 25
October 30, 2026
Retailer 11$8,383 AUD
Retailer 7$8,930 AUD
Retailer 12$9,044 AUD
Retailer 10$9,082 AUD
Retailer 22$9,118 AUD
Retailer 17$9,303 AUD
Retailer 6$9,372 AUD
Retailer 8$9,424 AUD
Retailer 3$9,554 AUD
Retailer 2$9,773 AUD
Retailer 14$9,860 AUD
Retailer 24$10,084 AUD
Retailer 9$10,139 AUD
Retailer 5$10,428 AUD
Retailer 19$10,859 AUD
Retailer 13$11,064 AUD
Retailer 20$11,247 AUD
Retailer 23$11,758 AUD
Retailer 25$11,758 AUD
Retailer 4$12,143 AUD
Retailer 21$12,143 AUD
Retailer 18$12,156 AUD
Retailer 16$13,201 AUD
MOH London$16,306 AUD
Retailer 15$18,090 AUD

21 data points across 25 retailers

22 retailers$9,118 AUD to $16,306 AUD

Retailer 1
-
$8,930 AUD
$6,258 USD
Price last confirmed 12 days ago
Retailer 2
-
$9,082 AUD
$6,365 USD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$9,118 AUD
$6,390 USD
View
Retailer 4
-
$9,303 AUD
$6,520 USD
View
Price last confirmed 18 days ago
Retailer 5
-
$9,372 AUD
€6,255 EUR
View
Price last confirmed 12 days ago
Retailer 6
-
$9,424 AUD
$6,605 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$9,554 AUD
$6,696 USD
View
B+
Retailer 8
-
$9,773 AUD
CA$9,513 CAD
View
Retailer 9
-
$9,860 AUD
$6,910 USD
View
Price last confirmed 12 days ago
B+
Retailer 10
-
$10,084 AUD
$7,067 USD
View
Retailer 11
-
$10,371 AUD
$7,268 USD
View
Price last confirmed 12 days ago
Retailer 12
-
$10,428 AUD
View
Price last confirmed 11 days ago
Retailer 13
-
$10,483 AUD
$7,347 USD
View
Price last confirmed 26 days ago
B+
Retailer 14
-
$10,859 AUD
$7,610 USD
View
B+
Retailer 15
-
$11,064 AUD
£6,105 GBP
View
B+
Retailer 16
-
$11,247 AUD
$7,882 USD
View
B+
Retailer 17
-
$11,758 AUD
$8,240 USD
View
B+
Retailer 18
-
$11,758 AUD
$8,240 USD
View
B+
Retailer 19
-
$12,143 AUD
$8,510 USD
View
B+
Retailer 20
-
$12,143 AUD
€8,105 EUR
View
Retailer 21
-
$12,156 AUD
$8,519 USD
View
Price last confirmed 16 days ago
Most Expensive
B
MOH London
456809E73 · Oct 29
$16,306 AUD
£8,998 GBP
View
21 more retailers have this diamond
Prices start from $9,118 AUDSave up to $7,188 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.

A
1.51ct Oval
$9,118 AUD