CaratHunter
Plans
Round|Natural|IGI

0.51ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 670417121

Shape and cutting style on the report: Round brilliant

Certificate IGI 670417121

Diamond specifications and retailer prices

From $331 SGD
As of November 6, 2026
Save $1,431 SGD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,761 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670417121. Listed at 12 retailers as of November 4, 2026, with prices from $331 to $1,761, a $1,431 spread on the same certified stone. NZ Jewellers lists it at $1,761. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 670417121
Dimensions5.10 × 5.05 × 3.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
5.10 mm5.05 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670417121
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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 6
Current: $331 SGD|Low: $331 SGD|High: $1,073 SGD|Avg: $609 SGD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$331 SGD
Retailer 5$423 SGD
Retailer 3$473 SGD
Retailer 6$497 SGD
Retailer 7$649 SGD
Retailer 2$747 SGD
Retailer 4$1,060 SGD

44 data points across 7 retailers

12 retailers$331 SGD to $1,761 SGD

A
Cheapest Retailer
-
$331 SGD
A
Retailer 2
-
$423 SGD
View
Final sale: no returns
A
Retailer 3
-
$460 SGD
View
A
Retailer 4
-
$473 SGD
View
Retailer 5
-
$496 SGD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$512 SGD
View
A
Retailer 7
-
$618 SGD
View
A
Retailer 8
-
$626 SGD
View
A
Retailer 9
-
$649 SGD
View
A
Retailer 10
-
$747 SGD
View
B+
Retailer 11
-
$1,060 SGD
View
Most Expensive
B
NZ Jewellers
027d91a0-08be-4dfe-9965-8ccb7e7514a0 · Nov 4
$1,761 SGD
$1,379 USD
View
11 more retailers have this diamond
Prices start from $331 SGDSave up to $1,431 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
$331 SGD