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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

ID • H/SI2 • GIA 53

Certificate GIA 53

Diamond specifications and retailer prices

From $4,195 SGD
As of October 31, 2026
Save $4,385 SGD (51%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,762 SGD at NZ Jewellers · As of September 24, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 14 retailers as of October 31, 2026, with a 105% 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
H
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 53
Dimensions7.27 × 7.31 × 4.58 mm
L/W Ratio1.01
Top View
7.27 mm7.31 mm1.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 53
Side View
Table 58.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 62.7%

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: Oct 31
Current: $8,580 SGD|Low: $4,195 SGD|High: $8,762 SGD|Avg: $5,975 SGD|-2.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 5$4,195 SGD
Retailer 4$4,554 SGD
Retailer 7$4,924 SGD
Retailer 6$5,114 SGD
Retailer 2$5,243 SGD
Retailer 3$7,817 SGD
NZ Jewellers$8,580 SGD

17 data points across 7 retailers

14 retailers$4,195 SGD to $8,580 SGD

A
Cheapest Retailer
-
$4,195 SGD
A
Retailer 2
-
$4,554 SGD
View
A
Retailer 3
-
$4,924 SGD
View
Retailer 4
-
$4,960 SGD
View
Price last confirmed 17 days ago
Retailer 5
-
$5,029 SGD
View
Price last confirmed 43 days ago
Retailer 6
-
$5,029 SGD
View
Price last confirmed 44 days ago
A
Retailer 7
-
$5,114 SGD
View
Retailer 8
-
$5,150 SGD
View
Price last confirmed 22 days ago
A
Retailer 9
-
$5,243 SGD
View
B+
Retailer 10
-
$7,817 SGD
View
B+
Retailer 11
-
$8,580 SGD
View
Retailer 12
-
$8,640 SGD
View
Price last confirmed 17 days ago
Retailer 13
-
$8,762 SGD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
9d33346a-86a3-45f0-90af-7e410cc52304 · Sep 24
$8,762 SGD
$6,860 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from $4,195 SGDSave up to $4,385 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
$4,195 SGD