Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2145854619

Certificate GIA 2145854619

Diamond specifications and retailer prices

From $11,376 USD
Save $9,187 USD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $20,563 USD at MOH London
View at MOH London

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2145854619. Listed at 14 retailers, with prices from $11,376 to $20,563 at MOH London, a $9,187 spread on the same certified stone. 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

1.51
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2145854619
Dimensions7.60 × 7.55 × 4.44 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
7.60 mm7.55 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2145854619
Side View
Table 60.0%Crown 32°Girdle: ThinPavilion 41.2°Culet: NoneDepth 58.6%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $20,563 USD|Low: $11,247 USD|High: $20,563 USD|Avg: $13,600 USD|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 1, 2026
Retailer 6$11,376 USD
Retailer 5$11,490 USD
Retailer 2$14,045 USD
Retailer 3$14,141 USD
Retailer 4$15,429 USD
MOH London$20,563 USD

40 data points across 6 retailers

14 retailers$11,376 USD to $20,563 USD

B+
Cheapest Retailer
-
$11,376 USD
B+
Retailer 2
-
$11,490 USD
View
B+
Retailer 3
-
$11,882 USD
View
B+
Retailer 4
-
$12,162 USD
CA$16,891 CAD
View
B+
Retailer 5
-
$12,169 USD
View
B
Retailer 6
-
$14,045 USD
A$21,608 AUD
View
B
Retailer 7
-
$14,141 USD
£11,135 GBP
View
B
Retailer 8
-
$14,900 USD
View
B
Retailer 9
-
$14,900 USD
View
Price last confirmed 12 days ago
B
Retailer 10
-
$15,081 USD
View
B
Retailer 11
-
$15,390 USD
View
Price last confirmed 11 days ago
B
Retailer 12
-
$15,429 USD
€14,694 EUR
View
B
Retailer 13
-
$17,451 USD
View
Most Expensive
B
MOH London
187A90C75 · Oct 1
$20,563 USD
£16,191 GBP
View
13 more retailers have this diamond
Prices start from $11,376 USDSave up to $9,187 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.

B+
1.51ct Round
$11,376 USD