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Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 6542034653

Certificate GIA 6542034653

Diamond specifications and retailer prices

From $9,723 AUD
$6,830 USD
As of October 30, 2026
Save $3,845 AUD (28%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $21,479 AUD at NZ Jewellers · As of September 19, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542034653. Listed at 15 retailers as of October 30, 2026, with a 40% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6542034653
Dimensions9.03 × 6.43 × 4.02 mm
L/W Ratio1.40
Top View
9.03 mm6.43 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6542034653
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.5%

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: $21,479 AUD|Low: $9,188 AUD|High: $21,479 AUD|Avg: $13,086 AUD
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
October 31, 2026
Retailer 11$9,188 AUD
Retailer 9$9,723 AUD
Retailer 13$9,854 AUD
Retailer 12$10,384 AUD
Retailer 6$10,740 AUD
Retailer 2$11,573 AUD
Retailer 5$11,635 AUD
Retailer 10$12,784 AUD
Retailer 15$12,784 AUD
Retailer 3$13,211 AUD
Retailer 14$13,474 AUD
Retailer 8$13,568 AUD
Retailer 7$15,310 AUD
Retailer 4$17,995 AUD
NZ Jewellers$21,479 AUD

28 data points across 15 retailers

15 retailers$9,723 AUD to $13,568 AUD

Retailer 1
-
$9,188 AUD
$6,454 USD
Price last confirmed 9 days ago
A
Retailer 2
-
$9,723 AUD
$6,830 USD
View
A
Retailer 3
-
$9,854 AUD
$6,922 USD
View
A
Retailer 4
-
$10,384 AUD
$7,294 USD
View
Final sale: no returns
Retailer 5
-
$10,740 AUD
$7,544 USD
View
Price last confirmed 15 days ago
B+
Retailer 6
-
$11,573 AUD
£6,401 GBP
View
Retailer 7
-
$11,635 AUD
$8,173 USD
View
Price last confirmed 39 days ago
B+
Retailer 8
-
$12,784 AUD
$8,980 USD
View
B+
Retailer 9
-
$12,784 AUD
$8,980 USD
View
B+
Retailer 10
-
$13,211 AUD
$9,280 USD
View
Retailer 11
-
$13,425 AUD
$9,430 USD
View
Price last confirmed 39 days ago
B+
Retailer 12
-
$13,474 AUD
$9,465 USD
View
B+
Retailer 13
-
$13,568 AUD
€9,077 EUR
View
Retailer 14
-
$17,995 AUD
£9,953 GBP
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
ebf27050-4f63-43a9-b8ea-3ce76ee6812a · Sep 19
$21,479 AUD
$15,088 USD
View
Price last confirmed 41 days ago
14 more retailers have this diamond
Prices start from $9,723 AUDSave up to $3,845 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
$9,723 AUD