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Round|Natural|GIA

1.50ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6451465789

Certificate GIA 6451465789

Diamond specifications and retailer prices

From $8,010 USD
As of October 25, 2026
Save $8,792 USD (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $16,802 USD at Diamond Quarter · As of October 29, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6451465789. Listed at 16 retailers as of October 25, 2026, with prices from $8,010 to $16,802, a $8,792 spread on the same certified stone. Diamond Quarter lists it at $16,802. 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
D
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6451465789
Dimensions7.37 × 7.33 × 4.54 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Top View
7.37 mm7.33 mm1.50 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6451465789
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

Caratlytics Score

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

Price History

Last verified: Oct 25
Current: $9,438 USD|Low: $7,267 USD|High: $13,783 USD|Avg: $9,936 USD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 4$8,010 USD
Retailer 8$8,078 USD
Retailer 5$8,720 USD
Retailer 1$9,438 USD
Retailer 6$9,447 USD
Retailer 3$10,796 USD
Retailer 7$11,477 USD
Retailer 2$13,692 USD

43 data points across 8 retailers

16 retailers$8,010 USD to $16,802 USD

A
Cheapest Retailer
-
$8,010 USD
A
Retailer 2
-
$8,164 USD
View
B+
Retailer 3
-
$8,720 USD
View
B+
Retailer 4
-
$8,720 USD
View
Final sale: no returns
B+
Retailer 5
-
$9,438 USD
£7,431 GBP
View
B+
Retailer 6
-
$9,447 USD
View
B+
Retailer 7
-
$9,592 USD
View
B+
Retailer 8
-
$10,300 USD
View
B+
Retailer 9
-
$10,300 USD
View
B+
Retailer 10
-
$10,640 USD
View
B+
Retailer 11
-
$10,796 USD
€10,282 EUR
View
B+
Retailer 12
-
$10,900 USD
View
B+
Retailer 13
-
$11,477 USD
View
B
Retailer 14
-
$13,692 USD
£10,781 GBP
View
B
Retailer 15
-
$14,533 USD
View
Most Expensive
B
Diamond Quarter
1.5SI2D648989CAN · Oct 29
$16,802 USD
£13,230 GBP
View
15 more retailers have this diamond
Prices start from $8,010 USDSave up to $8,792 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
$8,010 USD