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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

ID • I/SI2 • GIA 296

Certificate GIA 296

Diamond specifications and retailer prices

From $3,447 SGD
As of November 3, 2026
Save $5,403 SGD (61%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,932 SGD at NZ Jewellers · As of October 9, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 18 retailers as of November 2, 2026, with a 157% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 296
Dimensions7.26 × 7.31 × 4.57 mm
L/W Ratio1.01
Top View
7.26 mm7.31 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 296
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.6%

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 3
Current: $7,209 SGD|Low: $3,447 SGD|High: $8,932 SGD|Avg: $6,136 SGD|-19.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 5$3,447 SGD
Retailer 4$5,080 SGD
Retailer 7$5,666 SGD
Retailer 6$5,850 SGD
Retailer 3$6,887 SGD
Retailer 2$7,033 SGD
NZ Jewellers$7,209 SGD

23 data points across 7 retailers

18 retailers$3,447 SGD to $8,850 SGD

A
Cheapest Retailer
-
$3,447 SGD
A
Retailer 2
-
$3,580 SGD
View
A
Retailer 3
-
$4,658 SGD
View
A
Retailer 4
-
$5,080 SGD
View
A
Retailer 5
-
$5,080 SGD
View
Retailer 6
-
$5,127 SGD
View
Price last confirmed 27 days ago
Retailer 7
-
$5,127 SGD
View
Price last confirmed 22 days ago
A
Retailer 8
-
$5,264 SGD
View
Retailer 9
-
$5,666 SGD
View
Price last confirmed 16 days ago
Retailer 10
-
$5,850 SGD
View
Price last confirmed 19 days ago
Retailer 11
-
$6,877 SGD
View
Price last confirmed 17 days ago
B+
Retailer 12
-
$6,887 SGD
View
B+
Retailer 13
-
$7,033 SGD
View
B+
Retailer 14
-
$7,209 SGD
View
Retailer 15
-
$7,511 SGD
View
Price last confirmed 34 days ago
B+
Retailer 16
-
$8,850 SGD
View
Retailer 17
-
$8,932 SGD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
4fd0d3ee-e944-4b08-bd2a-022067e71fbc · Oct 9
$8,932 SGD
$6,993 USD
View
Price last confirmed 28 days ago
17 more retailers have this diamond
Prices start from $3,447 SGDSave up to $5,403 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
$3,447 SGD