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Round|Natural|GIA

1.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 1559703309

Certificate GIA 1559703309

Diamond specifications and retailer prices

From $3,122 SGD
As of November 6, 2026
Save $1,708 SGD (35%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,207 SGD at NZ Jewellers · As of October 17, 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 M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559703309. Listed at 11 retailers as of November 2, 2026, with a 55% 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
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1559703309
Dimensions7.32 × 7.29 × 4.57 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.32 mm7.29 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559703309
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.6%

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 6
Current: $3,889 SGD|Low: $3,090 SGD|High: $4,841 SGD|Avg: $3,850 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$3,122 SGD
Retailer 2$3,307 SGD
Retailer 5$3,755 SGD
Retailer 6$3,826 SGD
Retailer 1$3,889 SGD
Retailer 7$4,137 SGD
Retailer 3$4,829 SGD

43 data points across 7 retailers

11 retailers$3,122 SGD to $4,829 SGD

A
Cheapest Retailer
-
$3,122 SGD
A
Retailer 2
-
$3,307 SGD
View
B+
Retailer 3
-
$3,755 SGD
View
B+
Retailer 4
-
$3,826 SGD
View
B+
Retailer 5
-
$3,889 SGD
View
Retailer 6
-
$4,137 SGD
View
Price last confirmed 17 days ago
Retailer 7
-
$4,137 SGD
View
Price last confirmed 21 days ago
Retailer 8
-
$4,296 SGD
View
Price last confirmed 22 days ago
Retailer 9
-
$4,773 SGD
View
Price last confirmed 19 days ago
B
Retailer 10
-
$4,829 SGD
View
Most Expensive
NZ Jewellers
9fc923be-6068-412e-9d7a-3b73b8980827 · Oct 17
$7,207 SGD
$5,642 USD
View
Price last confirmed 19 days ago
10 more retailers have this diamond
Prices start from $3,122 SGDSave up to $1,708 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
$3,122 SGD