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Round|Natural|GIA

1.51ct K SI2 Round Natural Diamond

VG • K/SI2 • GIA 2557668439

Certificate GIA 2557668439

Diamond specifications and retailer prices

From $2,664 SGD
As of November 4, 2026
Save $3,459 SGD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,546 SGD at NZ Jewellers · As of September 26, 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 2557668439. Listed at 15 retailers as of November 4, 2026, with a 130% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 2557668439
Dimensions7.08 × 7.16 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.08 mm7.16 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557668439
Side View
Table 58.0%Crown 38°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 64.4%

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 4
Current: $4,089 SGD|Low: $2,599 SGD|High: $6,401 SGD|Avg: $3,588 SGD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4$2,664 SGD
Retailer 6$2,869 SGD
Retailer 9$2,885 SGD
Retailer 7$2,928 SGD
Retailer 5$2,931 SGD
Retailer 8$3,437 SGD
Retailer 2$3,686 SGD
Retailer 1$4,089 SGD
Retailer 3$6,123 SGD

43 data points across 9 retailers

15 retailers$2,664 SGD to $6,123 SGD

A
Cheapest Retailer
-
$2,664 SGD
A
Retailer 2
-
$2,869 SGD
View
A
Retailer 3
-
$2,885 SGD
View
A
Retailer 4
-
$2,928 SGD
View
B+
Retailer 5
-
$2,931 SGD
View
Final sale: no returns
Retailer 6
-
$3,270 SGD
View
Price last confirmed 25 days ago
Retailer 7
-
$3,270 SGD
View
Price last confirmed 29 days ago
Retailer 8
-
$3,421 SGD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$3,437 SGD
View
A
Retailer 10
-
$3,686 SGD
View
Retailer 11
-
$3,773 SGD
View
Price last confirmed 28 days ago
B+
Retailer 12
-
$4,089 SGD
View
Retailer 13
-
$4,335 SGD
View
Price last confirmed 45 days ago
B
Retailer 14
-
$6,123 SGD
View
Most Expensive
NZ Jewellers
f89b9305-cc72-4e1f-9aaa-ed09125b63e3 · Sep 26
$7,546 SGD
$5,908 USD
View
Price last confirmed 40 days ago
14 more retailers have this diamond
Prices start from $2,664 SGDSave up to $3,459 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
$2,664 SGD