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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 $2,641 USD
As of November 6, 2026
Save $3,689 USD (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,330 USD 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 $2,641 to $6,330, a $3,689 spread on the same certified stone. NZ Jewellers lists it at $6,330. 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
Color
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: $6,330 USD|Low: $2,576 USD|High: $6,330 USD|Avg: $3,538 USD|+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$2,641 USD
Retailer 3$2,752 USD
Retailer 11$2,795 USD
Retailer 12$2,886 USD
Retailer 18$2,914 USD
Retailer 7$3,034 USD
Retailer 8$3,038 USD
Retailer 5$3,185 USD
Retailer 10$3,211 USD
Retailer 17$3,292 USD
Retailer 14$3,376 USD
Retailer 4$3,535 USD
Retailer 15$3,537 USD
Retailer 2$3,760 USD
Retailer 6$3,798 USD
Retailer 16$3,994 USD
Retailer 19$4,466 USD
Retailer 13$6,060 USD
NZ Jewellers$6,330 USD

26 data points across 19 retailers

19 retailers$2,641 USD to $6,330 USD

A
Cheapest Retailer
-
$2,641 USD
A
Retailer 2
-
$2,752 USD
View
Retailer 3
-
$2,795 USD
View
Price last confirmed 16 days ago
A
Retailer 4
-
$2,886 USD
View
A
Retailer 5
-
$2,914 USD
View
A
Retailer 6
-
$3,034 USD
View
B+
Retailer 7
-
$3,038 USD
View
Final sale: no returns
A
Retailer 8
-
$3,185 USD
View
Retailer 9
-
$3,211 USD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$3,292 USD
View
A
Retailer 11
-
$3,376 USD
View
A
Retailer 12
-
$3,535 USD
View
A
Retailer 13
-
$3,537 USD
View
B+
Retailer 14
-
$3,760 USD
View
B+
Retailer 15
-
$3,798 USD
View
B+
Retailer 16
-
$3,994 USD
View
B+
Retailer 17
-
$4,466 USD
View
B
Retailer 18
-
$6,060 USD
View
Most Expensive
B
NZ Jewellers
de770bf7-1717-4e9e-b9a1-0ad4fe41ab3b · Nov 2
$6,330 USD
View
18 more retailers have this diamond
Prices start from $2,641 USDSave up to $3,689 USD

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
$2,641 USD