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Oval|Natural|GIA

1.51ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 6431020211

Certificate GIA 6431020211

Diamond specifications and retailer prices

From $5,787 AUD
₹387,147 INR
As of October 31, 2026
Save $8,892 AUD (61%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $14,679 AUD at Adiamor · As of November 1, 2026
View at Adiamor

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6431020211. Listed at 18 retailers as of October 31, 2026, with prices from $5,787 to $14,679, a $8,892 spread on the same certified stone. Adiamor lists it at $14,679. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6431020211
Dimensions8.37 × 6.31 × 4.09 mm
L/W Ratio1.33
Top View
8.37 mm6.31 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6431020211
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.8%

Caratlytics Score

How it works →
A
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 31
Current: $9,018 AUD|Low: $5,526 AUD|High: $12,847 AUD|Avg: $7,882 AUD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 4$5,787 AUD
Retailer 5$5,795 AUD
Retailer 10$6,701 AUD
Retailer 9$6,951 AUD
Retailer 7$6,997 AUD
Retailer 8$7,356 AUD
Retailer 3$7,776 AUD
Retailer 2$7,971 AUD
Retailer 1$9,018 AUD
Retailer 6$12,762 AUD

38 data points across 10 retailers

18 retailers$5,787 AUD to $14,679 AUD

A
Cheapest Retailer
-
$5,787 AUD
₹387,147 INR
A
Retailer 2
-
$5,795 AUD
HK$31,800 HKD
View
A
Retailer 3
-
$6,701 AUD
$4,707 USD
View
A
Retailer 4
-
$6,806 AUD
$4,781 USD
View
A
Retailer 5
-
$6,951 AUD
$4,883 USD
View
Retailer 6
-
$6,997 AUD
$4,915 USD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$7,356 AUD
$5,167 USD
View
Final sale: no returns
B+
Retailer 8
-
$7,362 AUD
SGD 6,988 SGD
View
B+
Retailer 9
-
$7,776 AUD
£4,301 GBP
View
B+
Retailer 10
-
$7,971 AUD
$5,599 USD
View
B+
Retailer 11
-
$7,971 AUD
$5,599 USD
View
B+
Retailer 12
-
$7,971 AUD
$5,599 USD
View
B+
Retailer 13
-
$8,190 AUD
$5,753 USD
View
B+
Retailer 14
-
$9,018 AUD
€6,033 EUR
View
B+
Retailer 15
-
$9,196 AUD
$6,460 USD
View
B
Retailer 16
-
$12,762 AUD
£7,059 GBP
View
B
Retailer 17
-
$13,331 AUD
$9,364 USD
View
Most Expensive
B
Adiamor
D-64716253 · Nov 1
$14,679 AUD
$10,311 USD
View
17 more retailers have this diamond
Prices start from $5,787 AUDSave up to $8,892 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
$5,787 AUD