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Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 7541897480

Certificate GIA 7541897480

Diamond specifications and retailer prices

From $8,590 AUD
$6,020 USD
As of November 1, 2026
Save $6,562 AUD (43%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $15,151 AUD at MOH London · As of November 2, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7541897480. Listed at 20 retailers as of November 1, 2026, with prices from $8,590 to $15,151, a $6,562 spread on the same certified stone. MOH London lists it at $15,151. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.48°
Pavilion angle39.93°
OriginNatural
Grading LabGIA
CertificateGIA 7541897480
Dimensions8.94 × 6.30 × 4.01 mm
L/W Ratio1.42
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Crystal, Feather, Indented Natural
Top View
8.94 mm6.30 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7541897480
Side View
Table 57.0%Crown 39.48°Girdle: MediumPavilion 39.93°Culet: NoneDepth 63.7%

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: $15,151 AUD|Low: $7,838 AUD|High: $15,233 AUD|Avg: $9,963 AUD|+15.2%
MOH London
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
Retailer 15
Retailer 16
Retailer 17
November 3, 2026
Retailer 8$7,838 AUD
Retailer 15$8,590 AUD
Retailer 4$9,125 AUD
Retailer 5$9,168 AUD
Retailer 16$9,670 AUD
Retailer 13$9,687 AUD
Retailer 9$9,937 AUD
Retailer 7$9,975 AUD
Retailer 2$10,251 AUD
Retailer 11$10,316 AUD
Retailer 3$10,482 AUD
Retailer 6$11,069 AUD
Retailer 17$11,127 AUD
Retailer 10$11,365 AUD
Retailer 12$11,878 AUD
Retailer 14$13,358 AUD
MOH London$15,151 AUD

26 data points across 17 retailers

20 retailers$8,590 AUD to $15,151 AUD

B+
Cheapest Retailer
-
$8,590 AUD
$6,020 USD
Retailer 2
-
$8,915 AUD
$6,248 USD
View
Price last confirmed 41 days ago
Retailer 3
-
$8,915 AUD
$6,248 USD
View
Price last confirmed 27 days ago
Retailer 4
-
$8,915 AUD
$6,248 USD
View
Price last confirmed 34 days ago
B+
Retailer 5
-
$9,125 AUD
$6,395 USD
View
B+
Retailer 6
-
$9,168 AUD
$6,425 USD
View
B+
Retailer 7
-
$9,670 AUD
CA$9,412 CAD
View
B+
Retailer 8
-
$9,687 AUD
$6,789 USD
View
B+
Retailer 9
-
$9,975 AUD
$6,991 USD
View
B
Retailer 10
-
$10,251 AUD
£5,657 GBP
View
B
Retailer 11
-
$10,316 AUD
£5,693 GBP
View
Retailer 12
-
$10,482 AUD
View
Price last confirmed 12 days ago
Retailer 13
-
$11,069 AUD
$7,758 USD
View
Price last confirmed 7 days ago
B
Retailer 14
-
$11,127 AUD
$7,798 USD
View
B
Retailer 15
-
$11,365 AUD
$7,965 USD
View
B
Retailer 16
-
$11,878 AUD
€7,928 EUR
View
B
Retailer 17
-
$13,358 AUD
ZAR 151,241 ZAR
View
Retailer 18
-
$14,911 AUD
$10,450 USD
View
Price last confirmed 43 days ago
Retailer 19
-
$14,911 AUD
$10,450 USD
View
Price last confirmed 27 days ago
Most Expensive
B
MOH London
D841CE379 · Nov 2
$15,151 AUD
£8,361 GBP
View
19 more retailers have this diamond
Prices start from $8,590 AUDSave up to $6,562 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 Oval
$8,590 AUD