Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6405890761

Certificate GIA 6405890761

Diamond specifications and retailer prices

From $12,496 USD
Save $11,205 USD (47%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $23,701 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 6405890761. Listed at 16 retailers, with prices from $12,496 to $23,701 at MOH London, a $11,205 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
OriginNatural
Grading LabGIA
CertificateGIA 6405890761
Dimensions7.42 × 7.39 × 4.49 mm
L/W Ratio1.00
Top View
7.42 mm7.39 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6405890761
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.6%

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: Oct 1
Current: $23,701 USD|Low: $12,496 USD|High: $23,701 USD|Avg: $16,615 USD|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 1, 2026
Retailer 7$12,496 USD
Retailer 6$13,160 USD
Retailer 8$14,705 USD
Retailer 2$15,834 USD
Retailer 5$16,099 USD
Retailer 4$17,157 USD
Retailer 3$21,620 USD
MOH London$23,701 USD

41 data points across 8 retailers

16 retailers$12,496 USD to $23,701 USD

B+
Cheapest Retailer
-
$12,496 USD
B
Retailer 2
-
$13,160 USD
View
B
Retailer 3
-
$13,717 USD
View
B
Retailer 4
-
$13,785 USD
View
B
Retailer 5
-
$14,043 USD
CA$19,505 CAD
View
B
Retailer 6
-
$14,705 USD
View
B
Retailer 7
-
$15,834 USD
A$24,360 AUD
View
B
Retailer 8
-
$16,099 USD
£12,676 GBP
View
B
Retailer 9
-
$16,910 USD
View
Price last confirmed 13 days ago
B
Retailer 10
-
$16,910 USD
View
B
Retailer 11
-
$17,157 USD
€16,340 EUR
View
B
Retailer 12
-
$17,415 USD
View
B
Retailer 13
-
$17,470 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
$20,432 USD
View
B
Retailer 15
-
$21,620 USD
ZAR 349,273 ZAR
View
Most Expensive
B
MOH London
100F909B5 · Oct 1
$23,701 USD
£18,662 GBP
View
15 more retailers have this diamond
Prices start from $12,496 USDSave up to $11,205 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
$12,496 USD