Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 5181599972

Certificate GIA 5181599972

Diamond specifications and retailer prices

From $9,738 USD
Save $8,732 USD (47%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $18,470 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5181599972. Listed at 16 retailers, with prices from $9,738 to $18,470 at MOH London, a $8,732 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
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5181599972
Dimensions7.40 × 7.37 × 4.50 mm
L/W Ratio1.00
Top View
7.40 mm7.37 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5181599972
Side View
Table 59.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 60.9%

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: $18,470 USD|Low: $9,738 USD|High: $19,102 USD|Avg: $13,105 USD|-3.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 1, 2026
Retailer 3$9,738 USD
Retailer 12$10,375 USD
Retailer 5$10,658 USD
Retailer 13$10,842 USD
Retailer 7$11,094 USD
Retailer 4$11,515 USD
Retailer 2$12,782 USD
Retailer 8$12,834 USD
Retailer 11$13,525 USD
Retailer 10$13,550 USD
Retailer 9$13,812 USD
Retailer 6$16,849 USD
MOH London$18,470 USD

41 data points across 13 retailers

16 retailers$9,738 USD to $18,470 USD

B+
Cheapest Retailer
-
$9,738 USD
B+
Retailer 2
-
$10,375 USD
View
B
Retailer 3
-
$10,658 USD
View
B
Retailer 4
-
$10,842 USD
View
B
Retailer 5
-
$11,094 USD
CA$15,408 CAD
View
B
Retailer 6
-
$11,515 USD
View
B
Retailer 7
-
$12,782 USD
A$19,665 AUD
View
B
Retailer 8
-
$12,862 USD
£10,128 GBP
View
B
Retailer 9
-
$13,525 USD
View
B
Retailer 10
-
$13,550 USD
View
B
Retailer 11
-
$13,812 USD
€13,154 EUR
View
B
Retailer 12
-
$14,090 USD
View
Price last confirmed 14 days ago
B
Retailer 13
-
$14,560 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
$16,732 USD
View
B
Retailer 15
-
$16,849 USD
ZAR 272,191 ZAR
View
Most Expensive
B
MOH London
F4CA087D1 · Sep 28
$18,470 USD
£14,543 GBP
View
15 more retailers have this diamond
Prices start from $9,738 USDSave up to $8,732 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
$9,738 USD