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Round|Natural|GIA

1.50ct K SI2 Round Natural Diamond

GD • K/SI2 • GIA 1559735577

Certificate GIA 1559735577

Diamond specifications and retailer prices

From $2,651 AUD
As of November 6, 2026
Save $3,560 AUD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,610 AUD at NZ Jewellers · As of October 27, 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 SI2 clarity (slightly-included), with a standard cut grade and certified by GIA 1559735577. Listed at 17 retailers as of November 4, 2026, with a 134% 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
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 1559735577
Dimensions6.92 × 6.98 × 4.63 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.92 mm6.98 mm1.50 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559735577
Side View
Table 57.0%Crown 40°Girdle: STK-VTKPavilion 39.8°Culet: NoneDepth 66.5%

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: $7,610 AUD|Low: $2,651 AUD|High: $7,670 AUD|Avg: $4,045 AUD|-0.8%
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
November 6, 2026
Retailer 11$2,651 AUD
Retailer 2$2,714 AUD
Retailer 12$3,281 AUD
Retailer 14$3,330 AUD
Retailer 6$3,464 AUD
Retailer 4$3,640 AUD
Retailer 8$3,640 AUD
Retailer 13$3,657 AUD
Retailer 3$3,703 AUD
Retailer 9$3,738 AUD
Retailer 7$3,766 AUD
Retailer 5$3,808 AUD
Retailer 16$4,200 AUD
Retailer 15$4,247 AUD
Retailer 10$6,211 AUD
NZ Jewellers$7,610 AUD

30 data points across 16 retailers

17 retailers$2,651 AUD to $6,211 AUD

A
Cheapest Retailer
-
$2,651 AUD
A
Retailer 2
-
$2,714 AUD
View
B+
Retailer 3
-
$3,281 AUD
View
Final sale: no returns
B+
Retailer 4
-
$3,330 AUD
View
B+
Retailer 5
-
$3,464 AUD
View
Retailer 6
-
$3,640 AUD
View
Price last confirmed 8 days ago
Retailer 7
-
$3,640 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$3,657 AUD
View
B+
Retailer 9
-
$3,703 AUD
View
B+
Retailer 10
-
$3,738 AUD
View
Retailer 11
-
$3,766 AUD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
$3,767 AUD
View
Retailer 13
-
$3,808 AUD
View
Price last confirmed 8 days ago
Retailer 14
-
$4,200 AUD
View
Price last confirmed 10 days ago
B+
Retailer 15
-
$4,247 AUD
View
B
Retailer 16
-
$6,211 AUD
View
Most Expensive
NZ Jewellers
3c078db9-7a78-4c1a-9370-ca5186cfeb6e · Oct 27
$7,610 AUD
$5,327 USD
View
Price last confirmed 10 days ago
16 more retailers have this diamond
Prices start from $2,651 AUDSave up to $3,560 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
1.50ct Round
$2,651 AUD