Round|Natural|GIA

1.50ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5403991543

Certificate GIA 5403991543

Diamond specifications and retailer prices

From $3,206 USD
As of November 4, 2026
Save $4,309 USD (57%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $7,653 USD at NZ Jewellers · As of September 10, 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 top-tier cut grade and certified by GIA 5403991543. Listed at 23 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. 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

1.50
Carat
K
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5403991543
Dimensions7.31 × 7.25 × 4.56 mm
L/W Ratio1.01
Top View
7.31 mm7.25 mm1.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5403991543
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $7,515 USD|Low: $2,887 USD|High: $7,653 USD|Avg: $4,751 USD|-1.8%
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
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 14$3,206 USD
Retailer 6$3,315 USD
Retailer 4$3,316 USD
Retailer 7$3,370 USD
Retailer 8$3,402 USD
Retailer 5$3,439 USD
Retailer 16$3,900 USD
Retailer 3$3,908 USD
Retailer 17$3,908 USD
Retailer 19$3,908 USD
Retailer 9$4,173 USD
Retailer 18$4,253 USD
Retailer 2$4,316 USD
Retailer 10$4,509 USD
Retailer 13$4,559 USD
Retailer 12$4,876 USD
Retailer 11$6,237 USD
Retailer 15$6,870 USD
NZ Jewellers$7,515 USD

43 data points across 19 retailers

23 retailers$3,206 USD to $7,515 USD

A
Cheapest Retailer
-
$3,206 USD
A
Retailer 2
-
$3,315 USD
View
A
Retailer 3
-
$3,316 USD
View
A
Retailer 4
-
$3,370 USD
View
A
Retailer 5
-
$3,402 USD
View
A
Retailer 6
-
$3,439 USD
View
B+
Retailer 7
-
$3,900 USD
View
B+
Retailer 8
-
$3,908 USD
View
Retailer 9
-
$3,908 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$3,908 USD
View
Retailer 11
-
$3,980 USD
View
Price last confirmed 56 days ago
Retailer 12
-
$4,061 USD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$4,173 USD
View
B+
Retailer 14
-
$4,253 USD
View
B+
Retailer 15
-
$4,316 USD
View
B+
Retailer 16
-
$4,509 USD
View
B+
Retailer 17
-
$4,559 USD
View
Retailer 18
-
$4,592 USD
View
Price last confirmed 60 days ago
B+
Retailer 19
-
$4,876 USD
View
B
Retailer 20
-
$6,237 USD
View
B
Retailer 21
-
$6,870 USD
View
B
Retailer 22
-
$7,515 USD
View
Most Expensive
NZ Jewellers
b87281be-c421-4565-b3fd-f27d96f175c9 · Sep 10
$7,653 USD
View
Price last confirmed 56 days ago
22 more retailers have this diamond
Prices start from $3,206 USDSave up to $4,309 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.

A
1.50ct Round
$3,206 USD