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1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2546595232

Certificate GIA 2546595232

Diamond specifications and retailer prices

From $3,792 SGD
As of November 6, 2026
Save $5,140 SGD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,932 SGD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2546595232. Listed at 15 retailers as of November 5, 2026, with prices from $3,792 to $8,932, a $5,140 spread on the same certified stone. NZ Jewellers lists it at $8,932. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2546595232
Dimensions7.25 × 7.30 × 4.57 mm
L/W Ratio1.01
Top View
7.25 mm7.30 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2546595232
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.9%

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 6
Current: $8,932 SGD|Low: $3,760 SGD|High: $8,996 SGD|Avg: $5,526 SGD
NZ Jewellers
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
November 6, 2026
Retailer 11$3,792 SGD
Retailer 4$4,122 SGD
Retailer 5$4,362 SGD
Retailer 12$4,458 SGD
Retailer 3$4,644 SGD
Retailer 13$4,644 SGD
Retailer 14$4,823 SGD
Retailer 7$5,130 SGD
Retailer 6$5,360 SGD
Retailer 9$5,386 SGD
Retailer 2$5,582 SGD
Retailer 8$6,257 SGD
Retailer 10$8,572 SGD
NZ Jewellers$8,932 SGD

38 data points across 14 retailers

15 retailers$3,792 SGD to $8,932 SGD

A
Cheapest Retailer
-
$3,792 SGD
A
Retailer 2
-
$4,122 SGD
View
A
Retailer 3
-
$4,362 SGD
View
A
Retailer 4
-
$4,458 SGD
View
Retailer 5
-
$4,644 SGD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$4,644 SGD
View
B+
Retailer 7
-
$4,823 SGD
View
B+
Retailer 8
-
$5,130 SGD
View
B+
Retailer 9
-
$5,360 SGD
View
B+
Retailer 10
-
$5,386 SGD
View
B+
Retailer 11
-
$5,582 SGD
View
Retailer 12
-
$6,015 SGD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$6,257 SGD
View
B
Retailer 14
-
$8,572 SGD
View
Most Expensive
B
NZ Jewellers
18b521fa-8fb0-499f-b2fe-e453b0e89815 · Nov 5
$8,932 SGD
$6,993 USD
View
14 more retailers have this diamond
Prices start from $3,792 SGDSave up to $5,140 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
$3,792 SGD