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Oval|Natural|IGI

0.51ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 815673855

Shape and cutting style on the report: Oval brilliant

Certificate IGI 815673855

Diamond specifications and retailer prices

From $414 SGD
As of November 6, 2026
Save $1,729 SGD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,143 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815673855. Listed at 14 retailers as of November 5, 2026, with prices from $414 to $2,143, a $1,729 spread on the same certified stone. NZ Jewellers lists it at $2,143. 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

0.51
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle30.7°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 815673855
Dimensions6.30 × 4.62 × 2.77 mm
L/W Ratio1.36
Girdle conditionFaceted
Top View
6.30 mm4.62 mm0.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 815673855
Side View
Table 60.0%Crown 30.7°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 60.0%

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: $2,143 SGD|Low: $414 SGD|High: $2,143 SGD|Avg: $800 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
November 6, 2026
Retailer 2$414 SGD
Retailer 13$559 SGD
Retailer 11$602 SGD
Retailer 12$602 SGD
Retailer 4$641 SGD
Retailer 3$645 SGD
Retailer 6$682 SGD
Retailer 8$714 SGD
Retailer 5$775 SGD
Retailer 9$866 SGD
Retailer 7$912 SGD
Retailer 10$1,288 SGD
NZ Jewellers$2,143 SGD

26 data points across 13 retailers

14 retailers$414 SGD to $2,143 SGD

A
Cheapest Retailer
-
$414 SGD
B+
Retailer 2
-
$559 SGD
View
B+
Retailer 3
-
$602 SGD
View
Retailer 4
-
$602 SGD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$641 SGD
View
B+
Retailer 6
-
$645 SGD
View
B+
Retailer 7
-
$682 SGD
View
B+
Retailer 8
-
$714 SGD
View
B+
Retailer 9
-
$727 SGD
View
B
Retailer 10
-
$775 SGD
View
B
Retailer 11
-
$866 SGD
View
B
Retailer 12
-
$912 SGD
View
B
Retailer 13
-
$1,288 SGD
View
Most Expensive
C
NZ Jewellers
f006e734-a583-408a-b002-81a75b2f699f · Nov 5
$2,143 SGD
$1,672 USD
View
13 more retailers have this diamond
Prices start from $414 SGDSave up to $1,729 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
0.51ct Oval
$414 SGD