Round|Natural|GIA

1.50ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6452477908

Certificate GIA 6452477908

Diamond specifications and retailer prices

From $5,260 USD
As of November 6, 2026
Save $6,502 USD (55%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $11,762 USD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6452477908. Listed at 23 retailers as of November 5, 2026, with prices from $5,260 to $11,762, a $6,502 spread on the same certified stone. Diamond Quarter lists it at $11,762. 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
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6452477908
Dimensions7.33 × 7.28 × 4.51 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.33 mm7.28 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452477908
Side View
Table 62.0%Crown 33°Girdle: ThickPavilion 41.6°Culet: NoneDepth 61.7%

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 6
Current: $7,744 USD|Low: $5,260 USD|High: $11,752 USD|Avg: $7,351 USD|-0.8%
Retailer 1
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
November 6, 2026
Retailer 15$5,260 USD
Retailer 4$5,571 USD
Retailer 9$5,875 USD
Retailer 6$5,920 USD
Retailer 16$6,270 USD
Retailer 2$6,366 USD
Retailer 8$6,366 USD
Retailer 17$6,366 USD
Retailer 11$6,628 USD
Retailer 3$6,820 USD
Retailer 5$7,345 USD
Retailer 10$7,570 USD
Retailer 14$7,652 USD
Retailer 1$7,744 USD
Retailer 18$7,744 USD
Retailer 12$8,573 USD
Retailer 13$10,325 USD
Retailer 7$11,752 USD

34 data points across 18 retailers

23 retailers$5,260 USD to $11,762 USD

A
Cheapest Retailer
-
$5,260 USD
Retailer 2
-
$5,468 USD
View
Price last confirmed 82 days ago
B+
Retailer 3
-
$5,552 USD
View
B+
Retailer 4
-
$5,571 USD
View
B+
Retailer 5
-
$5,875 USD
View
Final sale: no returns
B+
Retailer 6
-
$5,920 USD
View
B+
Retailer 7
-
$6,270 USD
View
B+
Retailer 8
-
$6,366 USD
View
Retailer 9
-
$6,366 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$6,366 USD
View
B+
Retailer 11
-
$6,628 USD
View
Retailer 12
-
$6,820 USD
View
Price last confirmed 15 days ago
B+
Retailer 13
-
$6,986 USD
View
B
Retailer 14
-
$7,189 USD
View
B
Retailer 15
-
$7,345 USD
View
B+
Retailer 16
-
$7,570 USD
View
B+
Retailer 17
-
$7,652 USD
View
Retailer 18
-
$7,744 USD
View
Price last confirmed 14 days ago
B+
Retailer 19
-
$7,744 USD
View
B
Retailer 20
-
$8,573 USD
View
B
Retailer 21
-
$10,325 USD
View
B
Retailer 22
-
$11,752 USD
View
Most Expensive
B
Diamond Quarter
1.5SI1H6408683CN · Nov 5
$11,762 USD
£9,261 GBP
View
22 more retailers have this diamond
Prices start from $5,260 USDSave up to $6,502 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
$5,260 USD