Radiant|Natural|GIA

1.50ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 6542466536

Certificate GIA 6542466536

Diamond specifications and retailer prices

From $2,163 USD
As of November 6, 2026
Save $2,819 USD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,005 USD at NZ Jewellers · As of September 30, 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 6542466536. Listed at 18 retailers as of November 4, 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. 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
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6542466536
Dimensions7.68 × 5.72 × 3.86 mm
L/W Ratio1.34
Top View
7.68 mm5.72 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6542466536
Side View
Table 68.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 67.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $2,705 USD|Low: $2,163 USD|High: $5,048 USD|Avg: $3,160 USD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 2$2,163 USD
Retailer 4$2,310 USD
Retailer 9$2,547 USD
Retailer 1$2,705 USD
Retailer 5$2,766 USD
Retailer 6$3,014 USD
Retailer 3$3,018 USD
Retailer 7$3,319 USD
Retailer 8$3,480 USD
Retailer 10$4,982 USD

25 data points across 10 retailers

18 retailers$2,163 USD to $4,982 USD

A
Cheapest Retailer
-
$2,163 USD
A
Retailer 2
-
$2,310 USD
View
A
Retailer 3
-
$2,547 USD
View
A
Retailer 4
-
$2,705 USD
View
A
Retailer 5
-
$2,705 USD
View
A
Retailer 6
-
$2,766 USD
View
Retailer 7
-
$2,872 USD
View
Price last confirmed 30 days ago
Retailer 8
-
$2,872 USD
View
Price last confirmed 30 days ago
A
Retailer 9
-
$2,878 USD
View
Retailer 10
-
$2,983 USD
View
Price last confirmed 38 days ago
A
Retailer 11
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$2,992 USD
View
A
Retailer 12
-
$3,014 USD
View
A
Retailer 13
-
$3,018 USD
View
Retailer 14
-
$3,314 USD
View
Price last confirmed 29 days ago
A
Retailer 15
-
$3,319 USD
View
A
Retailer 16
-
$3,480 USD
View
B
Retailer 17
-
$4,982 USD
View
Most Expensive
NZ Jewellers
26738c81-d90b-4ff3-af35-ecd2c1c77dc9 · Sep 30
$6,005 USD
View
Price last confirmed 37 days ago
17 more retailers have this diamond
Prices start from $2,163 USDSave up to $2,819 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
$2,163 USD