Round|Natural|GIA

1.50ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 6551816088

Certificate GIA 6551816088

Diamond specifications and retailer prices

From $5,630 USD
As of November 4, 2026
Save $4,852 USD (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,482 USD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551816088. Listed at 15 retailers as of November 4, 2026, with prices from $5,630 to $10,482, a $4,852 spread on the same certified stone. Wholesale Diamonds Direct lists it at $10,482. 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
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6551816088
Dimensions7.20 × 7.25 × 4.60 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.20 mm7.25 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551816088
Side View
Table 56.0%Crown 36.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 63.7%

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 4
Current: $6,315 USD|Low: $5,630 USD|High: $10,896 USD|Avg: $7,386 USD|-6.1%
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
Wholesale Diamonds Direct
November 7, 2026
Retailer 4$5,630 USD
Retailer 12$5,693 USD
Retailer 10$5,956 USD
Retailer 8$6,012 USD
Retailer 6$6,093 USD
Retailer 5$6,115 USD
Retailer 1$6,315 USD
Retailer 13$7,087 USD
Retailer 9$7,110 USD
Retailer 2$7,126 USD
Retailer 7$7,980 USD
Retailer 3$9,241 USD
Retailer 11$9,701 USD
Wholesale Diamonds Direct$10,482 USD

28 data points across 14 retailers

15 retailers$5,630 USD to $10,482 USD

A
Cheapest Retailer
-
$5,630 USD
A
Retailer 2
-
$5,693 USD
View
A
Retailer 3
-
$5,956 USD
View
A
Retailer 4
-
$6,012 USD
View
A
Retailer 5
-
$6,093 USD
View
A
Retailer 6
-
$6,115 USD
View
A
Retailer 7
-
$6,315 USD
View
B+
Retailer 8
-
$7,087 USD
View
B+
Retailer 9
-
$7,110 USD
View
B+
Retailer 10
-
$7,126 USD
View
B+
Retailer 11
-
$7,980 USD
View
B+
Retailer 12
-
$8,206 USD
View
B+
Retailer 13
-
$9,241 USD
View
B+
Retailer 14
-
$9,701 USD
View
Most Expensive
B
Wholesale Diamonds Direct
262901142 · Nov 6
$10,482 USD
View
14 more retailers have this diamond
Prices start from $5,630 USDSave up to $4,852 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
$5,630 USD