Round|Natural|GIA

1.50ct K SI1 Round Natural Diamond

GD • K/SI1 • GIA 1543359738

Certificate GIA 1543359738

Diamond specifications and retailer prices

From $1,945 USD
As of November 6, 2026
Save $2,535 USD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,346 USD 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
Color
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: $2,983 USD|Low: $1,839 USD|High: $4,944 USD|Avg: $2,630 USD|-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$1,945 USD
Retailer 3$2,093 USD
Retailer 7$2,116 USD
Retailer 10$2,139 USD
Retailer 12$2,141 USD
Retailer 9$2,302 USD
Retailer 2$2,320 USD
Retailer 11$2,350 USD
Retailer 4$2,767 USD
Retailer 1$2,983 USD
Retailer 5$3,121 USD
Retailer 6$4,480 USD

26 data points across 12 retailers

16 retailers$1,945 USD to $4,480 USD

B+
Cheapest Retailer
-
$1,945 USD
B+
Retailer 2
-
$2,093 USD
View
B+
Retailer 3
-
$2,116 USD
View
B+
Retailer 4
-
$2,139 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,141 USD
View
B+
Retailer 6
-
$2,302 USD
View
Retailer 7
-
$2,317 USD
View
Price last confirmed 29 days ago
Retailer 8
-
$2,317 USD
View
Price last confirmed 25 days ago
B+
Retailer 9
-
$2,320 USD
View
B+
Retailer 10
-
$2,350 USD
View
Retailer 11
-
$2,424 USD
View
Price last confirmed 38 days ago
Retailer 12
-
$2,673 USD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
$2,983 USD
View
B+
Retailer 14
-
$3,121 USD
View
B
Retailer 15
-
$4,480 USD
View
Most Expensive
NZ Jewellers
bb58740a-02ca-4dc3-82fb-8f8081beedbe · Sep 26
$5,346 USD
View
Price last confirmed 40 days ago
15 more retailers have this diamond
Prices start from $1,945 USDSave up to $2,535 USD

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
$1,945 USD