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Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 2556943966

Certificate GIA 2556943966

Diamond specifications and retailer prices

From $3,385 SGD
As of November 6, 2026
Save $4,728 SGD (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,113 SGD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556943966. Listed at 19 retailers as of November 2, 2026, with prices from $3,385 to $8,113, a $4,728 spread on the same certified stone. NZ Jewellers lists it at $8,113. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle35.7°
OriginNatural
Grading LabGIA
CertificateGIA 2556943966
Dimensions9.28 × 6.49 × 3.87 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeNone
Top View
9.28 mm6.49 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556943966
Side View
Table 59.0%Crown 35.8°Girdle: MED-THKPavilion 35.7°Culet: NoneDepth 59.7%

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: Nov 6
Current: $8,113 SGD|Low: $3,301 SGD|High: $8,113 SGD|Avg: $4,534 SGD|+2.5%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 5, 2026
Retailer 9$3,385 SGD
Retailer 3$3,527 SGD
Retailer 11$3,582 SGD
Retailer 12$3,699 SGD
Retailer 18$3,735 SGD
Retailer 7$3,888 SGD
Retailer 8$3,894 SGD
Retailer 5$4,082 SGD
Retailer 10$4,115 SGD
Retailer 17$4,219 SGD
Retailer 14$4,327 SGD
Retailer 4$4,530 SGD
Retailer 15$4,533 SGD
Retailer 2$4,819 SGD
Retailer 6$4,868 SGD
Retailer 16$5,119 SGD
Retailer 19$5,724 SGD
Retailer 13$7,766 SGD
NZ Jewellers$8,113 SGD

26 data points across 19 retailers

19 retailers$3,385 SGD to $8,113 SGD

A
Cheapest Retailer
-
$3,385 SGD
A
Retailer 2
-
$3,527 SGD
View
Retailer 3
-
$3,582 SGD
View
Price last confirmed 16 days ago
A
Retailer 4
-
$3,699 SGD
View
A
Retailer 5
-
$3,735 SGD
View
A
Retailer 6
-
$3,888 SGD
View
B+
Retailer 7
-
$3,894 SGD
View
Final sale: no returns
A
Retailer 8
-
$4,082 SGD
View
Retailer 9
-
$4,115 SGD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$4,219 SGD
View
A
Retailer 11
-
$4,327 SGD
View
A
Retailer 12
-
$4,530 SGD
View
A
Retailer 13
-
$4,533 SGD
View
B+
Retailer 14
-
$4,819 SGD
View
B+
Retailer 15
-
$4,868 SGD
View
B+
Retailer 16
-
$5,119 SGD
View
B+
Retailer 17
-
$5,724 SGD
View
B
Retailer 18
-
$7,766 SGD
View
Most Expensive
B
NZ Jewellers
de770bf7-1717-4e9e-b9a1-0ad4fe41ab3b · Nov 2
$8,113 SGD
$6,330 USD
View
18 more retailers have this diamond
Prices start from $3,385 SGDSave up to $4,728 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 Oval
$3,385 SGD