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Oval|Natural|GIA

1.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 2245085602

Certificate GIA 2245085602

Diamond specifications and retailer prices

From $2,775 AUD
As of November 6, 2026
Save $5,362 AUD (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,137 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245085602. Listed at 12 retailers as of November 5, 2026, with prices from $2,775 to $8,137, a $5,362 spread on the same certified stone. NZ Jewellers lists it at $8,137. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle38.75°
OriginNatural
Grading LabGIA
CertificateGIA 2245085602
Dimensions9.01 × 6.34 × 4.10 mm
L/W Ratio1.42
Key to symbols
Crystal, Cloud
Top View
9.01 mm6.34 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2245085602
Side View
Table 63.0%CrownGirdle: STK-THKPavilion 38.75°Culet: NoneDepth 64.6%

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: Nov 6
Current: $8,137 AUD|Low: $2,775 AUD|High: $8,655 AUD|Avg: $4,893 AUD|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$2,775 AUD
Retailer 10$3,588 AUD
Retailer 5$3,753 AUD
Retailer 6$3,860 AUD
Retailer 4$3,892 AUD
Retailer 12$4,042 AUD
Retailer 3$4,244 AUD
Retailer 8$4,602 AUD
Retailer 7$4,788 AUD
Retailer 11$5,913 AUD
Retailer 9$6,819 AUD
NZ Jewellers$8,137 AUD

24 data points across 12 retailers

12 retailers$2,775 AUD to $8,137 AUD

A
Cheapest Retailer
-
$2,775 AUD
A
Retailer 2
-
$3,588 AUD
View
A
Retailer 3
-
$3,753 AUD
View
A
Retailer 4
-
$3,860 AUD
View
A
Retailer 5
-
$3,892 AUD
View
A
Retailer 6
-
$4,042 AUD
View
A
Retailer 7
-
$4,244 AUD
View
A
Retailer 8
-
$4,602 AUD
View
A
Retailer 9
-
$4,788 AUD
View
B+
Retailer 10
-
$5,913 AUD
View
B+
Retailer 11
-
$6,819 AUD
View
Most Expensive
B
NZ Jewellers
06407ec2-9e67-4908-8adb-4ab5f11a71bc · Nov 5
$8,137 AUD
$5,591 USD
View
11 more retailers have this diamond
Prices start from $2,775 AUDSave up to $5,362 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
$2,775 AUD