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Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

GD • H/SI1 • GIA 6475770998

Certificate GIA 6475770998

Diamond specifications and retailer prices

From $10,704 AUD
As of November 4, 2026
Save $12,681 AUD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $23,385 AUD at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6475770998. Listed at 18 retailers as of November 4, 2026, with prices from $10,704 to $23,385, a $12,681 spread on the same certified stone. NZ Jewellers lists it at $23,385. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6475770998
Dimensions9.46 × 6.29 × 3.95 mm
L/W Ratio1.50
Top View
9.46 mm6.29 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6475770998
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $13,103 AUD|Low: $10,704 AUD|High: $19,719 AUD|Avg: $13,629 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$10,704 AUD
Retailer 9$10,948 AUD
Retailer 10$11,643 AUD
Retailer 2$11,790 AUD
Retailer 8$12,914 AUD
Retailer 4$12,925 AUD
Retailer 1$13,103 AUD
Retailer 3$14,472 AUD
Retailer 5$17,057 AUD
Retailer 6$19,433 AUD

38 data points across 10 retailers

18 retailers$10,704 AUD to $23,385 AUD

B
Cheapest Retailer
-
$10,704 AUD
B
Retailer 2
-
$10,948 AUD
View
B
Retailer 3
-
$11,643 AUD
View
Retailer 4
-
$11,693 AUD
View
Price last confirmed 8 days ago
B
Retailer 5
-
$11,790 AUD
View
B
Retailer 6
-
$12,666 AUD
View
B
Retailer 7
-
$12,861 AUD
View
Retailer 8
-
$12,914 AUD
View
Price last confirmed 14 days ago
B
Retailer 9
-
$12,925 AUD
View
B
Retailer 10
-
$13,103 AUD
View
B
Retailer 11
-
$13,870 AUD
View
B
Retailer 12
-
$13,870 AUD
View
B
Retailer 13
-
$14,336 AUD
View
B
Retailer 14
-
$14,472 AUD
View
B
Retailer 15
-
$14,615 AUD
View
B
Retailer 16
-
$17,057 AUD
View
B
Retailer 17
-
$19,433 AUD
View
Most Expensive
C
NZ Jewellers
66cb310d-cb36-4926-a7fc-32f111d9837d · Nov 5
$23,385 AUD
$16,068 USD
View
17 more retailers have this diamond
Prices start from $10,704 AUDSave up to $12,681 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
$10,704 AUD