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Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 5543492720

Certificate GIA 5543492720

Diamond specifications and retailer prices

From $3,403 AUD
As of November 6, 2026
Save $4,343 AUD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,746 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5543492720. Listed at 14 retailers as of November 5, 2026, with prices from $3,403 to $7,746, a $4,343 spread on the same certified stone. NZ Jewellers lists it at $7,746. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5543492720
Dimensions9.21 × 6.37 × 3.99 mm
L/W Ratio1.45
Top View
9.21 mm6.37 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543492720
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NDepth 62.7%

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: Nov 6
Current: $7,746 AUD|Low: $2,626 AUD|High: $7,746 AUD|Avg: $3,902 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 10$2,626 AUD
Retailer 15$3,403 AUD
Retailer 7$3,420 AUD
Retailer 9$3,429 AUD
Retailer 11$3,525 AUD
Retailer 3$3,606 AUD
Retailer 19$3,959 AUD
Retailer 17$4,029 AUD
Retailer 13$4,077 AUD
Retailer 5$4,183 AUD
Retailer 8$4,240 AUD
Retailer 2$4,312 AUD
Retailer 12$4,542 AUD
Retailer 18$4,595 AUD
Retailer 14$4,647 AUD
Retailer 6$4,879 AUD
Retailer 16$5,426 AUD
Retailer 4$5,958 AUD
NZ Jewellers$7,746 AUD

11 data points across 19 retailers

14 retailers$3,403 AUD to $7,746 AUD

A
Cheapest Retailer
-
$3,403 AUD
Retailer 2
-
$3,420 AUD
View
Price last confirmed 16 days ago
B+
Retailer 3
-
$3,606 AUD
View
B+
Retailer 4
-
$3,959 AUD
View
B+
Retailer 5
-
$4,029 AUD
View
B+
Retailer 6
-
$4,077 AUD
View
B+
Retailer 7
-
$4,183 AUD
View
B+
Retailer 8
-
$4,312 AUD
View
B+
Retailer 9
-
$4,542 AUD
View
B+
Retailer 10
-
$4,595 AUD
View
B+
Retailer 11
-
$4,647 AUD
View
B+
Retailer 12
-
$5,426 AUD
View
B+
Retailer 13
-
$5,958 AUD
View
Most Expensive
B
NZ Jewellers
0c405d4e-f861-4ade-b40e-77f1de424cea · Nov 5
$7,746 AUD
$5,322 USD
View
13 more retailers have this diamond
Prices start from $3,403 AUDSave up to $4,343 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
$3,403 AUD