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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 3555438928

Certificate GIA 3555438928

Diamond specifications and retailer prices

From $6,814 SGD
As of November 5, 2026
Save $6,221 SGD (48%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $13,036 SGD at MOH London · As of November 4, 2026
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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555438928. Listed at 21 retailers as of November 4, 2026, with prices from $6,814 to $13,036, a $6,221 spread on the same certified stone. MOH London lists it at $13,036. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555438928
Dimensions7.30 × 7.34 × 4.58 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.30 mm7.34 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555438928
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 62.5%

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: Nov 5
Current: $13,036 SGD|Low: $6,722 SGD|High: $13,229 SGD|Avg: $8,543 SGD|-1.5%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 7, 2026
Retailer 15$6,722 SGD
Retailer 5$6,814 SGD
Retailer 8$7,010 SGD
Retailer 3$7,015 SGD
Retailer 6$7,103 SGD
Retailer 9$7,419 SGD
Retailer 4$7,478 SGD
Retailer 14$7,904 SGD
Retailer 7$7,919 SGD
Retailer 22$8,038 SGD
Retailer 16$8,166 SGD
Retailer 11$8,169 SGD
Retailer 21$8,184 SGD
Retailer 2$8,344 SGD
Retailer 12$8,396 SGD
Retailer 13$8,885 SGD
Retailer 17$9,075 SGD
Retailer 10$9,079 SGD
Retailer 18$9,434 SGD
Retailer 19$10,824 SGD
Retailer 20$12,861 SGD
MOH London$13,036 SGD

30 data points across 22 retailers

21 retailers$6,814 SGD to $13,036 SGD

A
Cheapest Retailer
-
$6,814 SGD
A
Retailer 2
-
$7,010 SGD
View
A
Retailer 3
-
$7,015 SGD
View
A
Retailer 4
-
$7,103 SGD
View
B+
Retailer 5
-
$7,419 SGD
View
Final sale: no returns
B+
Retailer 6
-
$7,478 SGD
View
B+
Retailer 7
-
$7,919 SGD
View
B+
Retailer 8
-
$8,038 SGD
View
B+
Retailer 9
-
$8,166 SGD
View
Retailer 10
-
$8,169 SGD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
$8,184 SGD
View
B+
Retailer 12
-
$8,344 SGD
View
Retailer 13
-
$8,396 SGD
View
Price last confirmed 34 days ago
Retailer 14
-
$8,562 SGD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
$8,885 SGD
View
B+
Retailer 16
-
$9,075 SGD
View
B+
Retailer 17
-
$9,079 SGD
View
B+
Retailer 18
-
$9,434 SGD
View
B
Retailer 19
-
$10,824 SGD
View
B
Retailer 20
-
$12,861 SGD
View
Most Expensive
B
MOH London
BCCCD8CA4 · Nov 4
$13,036 SGD
£8,009 GBP
View
20 more retailers have this diamond
Prices start from $6,814 SGDSave up to $6,221 SGD

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
1.51ct Round
$6,814 SGD