CaratHunter
Plans
Round|Natural|IGI

0.51ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 670418814

Shape and cutting style on the report: Round brilliant

Certificate IGI 670418814

Diamond specifications and retailer prices

From $351 SGD
As of November 5, 2026
Save $1,240 SGD (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,592 SGD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670418814. Listed at 13 retailers as of November 4, 2026, with prices from $351 to $1,592, a $1,240 spread on the same certified stone. NZ Jewellers lists it at $1,592. 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

0.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.5°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 670418814
Dimensions5.15 × 5.12 × 3.14 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
5.15 mm5.12 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 670418814
Side View
Table 57.0%Crown 32.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $494 SGD|Low: $351 SGD|High: $820 SGD|Avg: $501 SGD|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 4$351 SGD
Retailer 6$364 SGD
Retailer 9$369 SGD
Retailer 11$378 SGD
Retailer 8$441 SGD
Retailer 1$494 SGD
Retailer 2$517 SGD
Retailer 10$517 SGD
Retailer 3$528 SGD
Retailer 12$575 SGD
Retailer 5$672 SGD
Retailer 7$811 SGD

23 data points across 12 retailers

13 retailers$351 SGD to $1,592 SGD

A
Cheapest Retailer
-
$351 SGD
A
Retailer 2
-
$364 SGD
View
Retailer 3
-
$378 SGD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$392 SGD
View
Retailer 5
-
$441 SGD
View
Price last confirmed 42 days ago
Retailer 6
-
$473 SGD
View
Price last confirmed 63 days ago
B+
Retailer 7
-
$473 SGD
View
B+
Retailer 8
-
$494 SGD
View
B+
Retailer 9
-
$517 SGD
View
B+
Retailer 10
-
$672 SGD
View
B+
Retailer 11
-
$811 SGD
View
Retailer 12
-
$1,592 SGD
View
Price last confirmed 66 days ago
Most Expensive
C
NZ Jewellers
6f82cb98-7cb0-4025-b245-448f57a419c4 · Nov 4
$1,592 SGD
$1,246 USD
View
12 more retailers have this diamond
Prices start from $351 SGDSave up to $1,240 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 Round
$351 SGD