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Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 7546535536

Certificate GIA 7546535536

Diamond specifications and retailer prices

From $10,170 AUD
$7,144 USD
As of October 30, 2026
Save $8,054 AUD (44%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $22,372 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7546535536. Listed at 23 retailers as of October 29, 2026, with a 79% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7546535536
Dimensions9.01 × 6.41 × 4.02 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Twinning Wisp, Feather, Needle
Top View
9.01 mm6.41 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7546535536
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $15,979 AUD|Low: $10,170 AUD|High: $18,866 AUD|Avg: $13,675 AUD|-0.7%
Retailer 1
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
October 31, 2026
Retailer 2$10,170 AUD
Retailer 3$10,875 AUD
Retailer 10$11,154 AUD
Retailer 13$11,589 AUD
Retailer 7$12,132 AUD
Retailer 14$12,255 AUD
Retailer 6$12,293 AUD
Retailer 4$12,997 AUD
Retailer 5$12,997 AUD
Retailer 12$13,425 AUD
Retailer 8$14,212 AUD
Retailer 1$15,979 AUD
Retailer 11$17,393 AUD
Retailer 9$18,224 AUD

37 data points across 14 retailers

23 retailers$10,170 AUD to $18,224 AUD

A
Cheapest Retailer
-
$10,170 AUD
$7,144 USD
A
Retailer 2
-
$10,875 AUD
$7,639 USD
View
Final sale: no returns
Retailer 3
-
$11,134 AUD
$7,821 USD
View
Price last confirmed 20 days ago
A
Retailer 4
-
$11,154 AUD
$7,835 USD
View
B+
Retailer 5
-
$11,589 AUD
$8,140 USD
View
Retailer 6
-
$12,062 AUD
$8,473 USD
View
Price last confirmed 19 days ago
Retailer 7
-
$12,118 AUD
$8,512 USD
View
Price last confirmed 39 days ago
B+
Retailer 8
-
$12,132 AUD
£6,710 GBP
View
Retailer 9
-
$12,255 AUD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$12,293 AUD
$8,635 USD
View
Retailer 11
-
$12,304 AUD
$8,643 USD
View
Price last confirmed 32 days ago
B+
Retailer 12
-
$12,997 AUD
$9,130 USD
View
B+
Retailer 13
-
$12,997 AUD
$9,130 USD
View
B+
Retailer 14
-
$13,425 AUD
$9,430 USD
View
Retailer 15
-
$13,919 AUD
$9,777 USD
View
Price last confirmed 20 days ago
Retailer 16
-
$13,983 AUD
$9,822 USD
View
Price last confirmed 60 days ago
Retailer 17
-
$13,983 AUD
$9,822 USD
View
Price last confirmed 39 days ago
B+
Retailer 18
-
$14,212 AUD
€9,508 EUR
View
B+
Retailer 19
-
$15,979 AUD
ZAR 181,329 ZAR
View
B
Retailer 20
-
$17,393 AUD
£9,620 GBP
View
B
Retailer 21
-
$18,224 AUD
£10,080 GBP
View
Retailer 22
-
$22,269 AUD
$15,643 USD
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
3adaf25a-7e1d-4307-9872-d0e0d547fb3f · Sep 19
$22,372 AUD
$15,715 USD
View
Price last confirmed 42 days ago
22 more retailers have this diamond
Prices start from $10,170 AUDSave up to $8,054 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
$10,170 AUD