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Oval|Natural|GIA

1.51ct H SI2 Oval Natural Diamond

ID • H/SI2 • GIA 6551643504

Certificate GIA 6551643504

Diamond specifications and retailer prices

From $4,985 AUD
$3,502 USD
As of October 31, 2026
Save $6,856 AUD (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,842 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 6551643504. Listed at 17 retailers as of October 30, 2026, with prices from $4,985 to $11,842, a $6,856 spread on the same certified stone. NZ Jewellers lists it at $11,842. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551643504
Dimensions8.86 × 6.30 × 3.97 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
8.86 mm6.30 mm1.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551643504
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.1%

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: $11,842 AUD|Low: $4,985 AUD|High: $12,136 AUD|Avg: $7,044 AUD|-2.4%
NZ Jewellers
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 2, 2026
Retailer 15$4,985 AUD
Retailer 8$5,310 AUD
Retailer 5$5,548 AUD
Retailer 11$5,684 AUD
Retailer 16$6,126 AUD
Retailer 6$6,127 AUD
Retailer 3$6,157 AUD
Retailer 4$6,157 AUD
Retailer 17$6,157 AUD
Retailer 7$6,533 AUD
Retailer 2$6,584 AUD
Retailer 12$6,759 AUD
Retailer 10$7,051 AUD
Retailer 14$7,105 AUD
Retailer 9$8,428 AUD
Retailer 13$10,826 AUD
NZ Jewellers$11,842 AUD

25 data points across 17 retailers

17 retailers$4,985 AUD to $11,842 AUD

A
Cheapest Retailer
-
$4,985 AUD
$3,502 USD
A
Retailer 2
-
$5,310 AUD
$3,730 USD
View
A
Retailer 3
-
$5,548 AUD
$3,897 USD
View
A
Retailer 4
-
$5,684 AUD
$3,993 USD
View
Final sale: no returns
A
Retailer 5
-
$6,126 AUD
$4,303 USD
View
A
Retailer 6
-
$6,127 AUD
$4,304 USD
View
A
Retailer 7
-
$6,157 AUD
$4,325 USD
View
A
Retailer 8
-
$6,157 AUD
$4,325 USD
View
A
Retailer 9
-
$6,157 AUD
$4,325 USD
View
A
Retailer 10
-
$6,533 AUD
$4,589 USD
View
A
Retailer 11
-
$6,584 AUD
£3,642 GBP
View
A
Retailer 12
-
$6,759 AUD
£3,738 GBP
View
A
Retailer 13
-
$7,051 AUD
€4,717 EUR
View
A
Retailer 14
-
$7,105 AUD
$4,991 USD
View
B+
Retailer 15
-
$8,428 AUD
$5,920 USD
View
B+
Retailer 16
-
$10,826 AUD
£5,988 GBP
View
Most Expensive
B
NZ Jewellers
8c622049-9a61-49f9-ac51-2a589433ecd6 · Oct 30
$11,842 AUD
$8,318 USD
View
16 more retailers have this diamond
Prices start from $4,985 AUDSave up to $6,856 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
$4,985 AUD