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Round|Natural|GIA

1.50ct K SI1 Round Natural Diamond

GD • K/SI1 • GIA 1543359738

Certificate GIA 1543359738

Diamond specifications and retailer prices

From $2,778 AUD
As of November 6, 2026
Save $3,621 AUD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,637 AUD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 1543359738. Listed at 16 retailers as of November 2, 2026, with a 130% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
K
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle33°
Pavilion angle39.2°
OriginNatural
Grading LabGIA
CertificateGIA 1543359738
Dimensions7.23 × 7.15 × 4.42 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.23 mm7.15 mm1.50 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 1543359738
Side View
Table 55.0%Crown 33°Girdle: THK-VTKPavilion 39.2°Culet: NDepth 61.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,261 AUD|Low: $2,627 AUD|High: $7,063 AUD|Avg: $3,757 AUD|-5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 8$2,778 AUD
Retailer 3$2,990 AUD
Retailer 7$3,023 AUD
Retailer 10$3,056 AUD
Retailer 12$3,058 AUD
Retailer 9$3,288 AUD
Retailer 2$3,314 AUD
Retailer 11$3,357 AUD
Retailer 4$3,953 AUD
Retailer 1$4,261 AUD
Retailer 5$4,458 AUD
Retailer 6$6,400 AUD

26 data points across 12 retailers

16 retailers$2,778 AUD to $6,400 AUD

B+
Cheapest Retailer
-
$2,778 AUD
B+
Retailer 2
-
$2,990 AUD
View
B+
Retailer 3
-
$3,023 AUD
View
B+
Retailer 4
-
$3,056 AUD
View
Final sale: no returns
B+
Retailer 5
-
$3,058 AUD
View
B+
Retailer 6
-
$3,288 AUD
View
Retailer 7
-
$3,310 AUD
View
Price last confirmed 29 days ago
Retailer 8
-
$3,310 AUD
View
Price last confirmed 25 days ago
B+
Retailer 9
-
$3,314 AUD
View
B+
Retailer 10
-
$3,357 AUD
View
Retailer 11
-
$3,463 AUD
View
Price last confirmed 38 days ago
Retailer 12
-
$3,818 AUD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
$4,261 AUD
View
B+
Retailer 14
-
$4,458 AUD
View
B
Retailer 15
-
$6,400 AUD
View
Most Expensive
NZ Jewellers
bb58740a-02ca-4dc3-82fb-8f8081beedbe · Sep 26
$7,637 AUD
$5,346 USD
View
Price last confirmed 40 days ago
15 more retailers have this diamond
Prices start from $2,778 AUDSave up to $3,621 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.

B+
1.50ct Round
$2,778 AUD