CaratHunter
Plans
Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 5523685084

Certificate GIA 5523685084

Diamond specifications and retailer prices

From $9,557 AUD
$6,713 USD
As of October 30, 2026
Save $10,858 AUD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $20,414 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 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 5523685084. Listed at 19 retailers as of October 30, 2026, with prices from $9,557 to $20,414, a $10,858 spread on the same certified stone. NZ Jewellers lists it at $20,414. 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
Crown angle39.45°
Pavilion angle39.69°
OriginNatural
Grading LabGIA
CertificateGIA 5523685084
Dimensions8.96 × 6.47 × 3.99 mm
L/W Ratio1.38
Top View
8.96 mm6.47 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5523685084
Side View
Table 60.0%Crown 39.45°Girdle: MED-THKPavilion 39.69°Culet: NoneDepth 61.7%

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: $20,414 AUD|Low: $9,557 AUD|High: $20,414 AUD|Avg: $12,974 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 6$9,557 AUD
Retailer 9$10,207 AUD
Retailer 3$10,872 AUD
Retailer 7$11,057 AUD
Retailer 8$11,228 AUD
Retailer 2$11,371 AUD
Retailer 10$12,758 AUD
Retailer 4$13,338 AUD
Retailer 11$14,550 AUD
Retailer 5$17,102 AUD
NZ Jewellers$20,414 AUD

41 data points across 11 retailers

19 retailers$9,557 AUD to $20,414 AUD

A
Cheapest Retailer
-
$9,557 AUD
$6,713 USD
A
Retailer 2
-
$10,207 AUD
$7,170 USD
View
A
Retailer 3
-
$10,293 AUD
$7,230 USD
View
B+
Retailer 4
-
$10,872 AUD
$7,637 USD
View
Retailer 5
-
$11,057 AUD
$7,767 USD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
$11,057 AUD
$7,767 USD
View
B+
Retailer 7
-
$11,228 AUD
$7,887 USD
View
A
Retailer 8
-
$11,371 AUD
£6,289 GBP
View
Retailer 9
-
$12,758 AUD
$8,962 USD
View
Price last confirmed 60 days ago
Retailer 10
-
$12,758 AUD
$8,962 USD
View
Price last confirmed 32 days ago
B+
Retailer 11
-
$12,758 AUD
$8,962 USD
View
B+
Retailer 12
-
$12,812 AUD
$9,000 USD
View
B+
Retailer 13
-
$12,812 AUD
$9,000 USD
View
B+
Retailer 14
-
$13,239 AUD
$9,300 USD
View
B+
Retailer 15
-
$13,338 AUD
€8,923 EUR
View
B
Retailer 16
-
$17,102 AUD
£9,459 GBP
View
Retailer 17
-
$20,414 AUD
$14,340 USD
View
Price last confirmed 62 days ago
Retailer 18
-
$20,414 AUD
$14,340 USD
View
Price last confirmed 33 days ago
Most Expensive
B
NZ Jewellers
7d405e4f-bf1f-46b4-b4d2-295327d99e14 · Oct 30
$20,414 AUD
$14,340 USD
View
18 more retailers have this diamond
Prices start from $9,557 AUDSave up to $10,858 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
$9,557 AUD