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Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

VG • D/SI2 • GIA 6521445078

Certificate GIA 6521445078

Diamond specifications and retailer prices

From $6,137 AUD
$4,311 USD
As of October 30, 2026
Save $6,302 AUD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,538 AUD at NZ Jewellers · As of September 29, 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 D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6521445078. Listed at 15 retailers as of October 29, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6521445078
Dimensions8.66 × 6.32 × 4.18 mm
L/W Ratio1.37
Top View
8.66 mm6.32 mm1.51 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6521445078
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.1%

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 30
Current: $8,268 AUD|Low: $5,861 AUD|High: $13,048 AUD|Avg: $7,873 AUD|-7.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 8$6,137 AUD
Retailer 10$6,184 AUD
Retailer 2$6,264 AUD
Retailer 7$6,975 AUD
Retailer 6$7,037 AUD
Retailer 3$7,342 AUD
Retailer 4$7,579 AUD
Retailer 9$7,861 AUD
Retailer 1$8,268 AUD
Retailer 5$12,439 AUD

42 data points across 10 retailers

15 retailers$6,137 AUD to $12,439 AUD

A
Cheapest Retailer
-
$6,137 AUD
$4,311 USD
A
Retailer 2
-
$6,184 AUD
$4,344 USD
View
Final sale: no returns
Retailer 3
-
$6,264 AUD
$4,400 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
$6,975 AUD
$4,899 USD
View
A
Retailer 5
-
$7,037 AUD
$4,943 USD
View
Retailer 6
-
$7,333 AUD
$5,151 USD
View
Price last confirmed 31 days ago
Retailer 7
-
$7,333 AUD
$5,151 USD
View
Price last confirmed 32 days ago
A
Retailer 8
-
$7,342 AUD
£4,061 GBP
View
A
Retailer 9
-
$7,521 AUD
View
A
Retailer 10
-
$7,579 AUD
£4,192 GBP
View
A
Retailer 11
-
$7,861 AUD
$5,522 USD
View
A
Retailer 12
-
$8,268 AUD
€5,531 EUR
View
Retailer 13
-
$8,462 AUD
$5,944 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
$12,439 AUD
£6,880 GBP
View
Most Expensive
NZ Jewellers
3ca13b80-03f2-44a9-9ecc-1ae90fe81a62 · Sep 29
$13,538 AUD
$9,510 USD
View
Price last confirmed 32 days ago
14 more retailers have this diamond
Prices start from $6,137 AUDSave up to $6,302 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
$6,137 AUD