Radiant|Natural|GIA

1.50ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 2554814067

Certificate GIA 2554814067

Diamond specifications and retailer prices

From $3,995 USD
As of November 7, 2026
Save $3,295 USD (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,290 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554814067. Listed at 11 retailers as of November 5, 2026, with prices from $3,995 to $7,290, a $3,295 spread on the same certified stone. NZ Jewellers lists it at $7,290. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554814067
Dimensions8.21 × 5.67 × 3.80 mm
L/W Ratio1.45
Culet sizeNone
Top View
8.21 mm5.67 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554814067
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.0%

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 7
Current: $7,290 USD|Low: $3,995 USD|High: $7,752 USD|Avg: $5,012 USD|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 3$3,995 USD
Retailer 4$4,059 USD
Retailer 8$4,184 USD
Retailer 10$4,184 USD
Retailer 11$4,184 USD
Retailer 2$4,238 USD
Retailer 5$4,708 USD
Retailer 9$4,828 USD
Retailer 6$5,107 USD
Retailer 7$6,978 USD
NZ Jewellers$7,290 USD

29 data points across 11 retailers

11 retailers$3,995 USD to $7,290 USD

A
Cheapest Retailer
-
$3,995 USD
B+
Retailer 2
-
$4,059 USD
View
B+
Retailer 3
-
$4,184 USD
View
Retailer 4
-
$4,184 USD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$4,184 USD
View
B+
Retailer 6
-
$4,238 USD
View
B+
Retailer 7
-
$4,708 USD
View
B+
Retailer 8
-
$4,828 USD
View
B+
Retailer 9
-
$5,107 USD
View
B
Retailer 10
-
$6,978 USD
View
Most Expensive
B
NZ Jewellers
ed42692b-97ac-4d77-86b6-d376420476bd · Nov 5
$7,290 USD
View
10 more retailers have this diamond
Prices start from $3,995 USDSave up to $3,295 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 Radiant
$3,995 USD