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Round|Natural|IGI

0.51ct L SI2 Round Natural Diamond

EX • L/SI2 • IGI 638418320

Shape and cutting style on the report: Round brilliant

Certificate IGI 638418320

Diamond specifications and retailer prices

From $482 NZD
As of November 5, 2026
Save $1,697 NZD (78%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,179 NZD 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 L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 638418320. Listed at 9 retailers as of November 4, 2026, with prices from $482 to $2,179, a $1,697 spread on the same certified stone. NZ Jewellers lists it at $2,179. 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
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle36.2°
Pavilion angle41.4°
OriginNatural
Grading LabIGI
CertificateIGI 638418320
Dimensions5.07 × 5.10 × 3.14 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
5.07 mm5.10 mm0.51 ctL / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateIGI 638418320
Side View
Table 63.0%Crown 36.2°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.8%

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: $2,179 NZD|Low: $482 NZD|High: $2,179 NZD|Avg: $791 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 7$482 NZD
Retailer 5$505 NZD
Retailer 9$518 NZD
Retailer 4$537 NZD
Retailer 8$648 NZD
Retailer 6$655 NZD
Retailer 11$712 NZD
Retailer 3$722 NZD
Retailer 2$824 NZD
Retailer 10$843 NZD
NZ Jewellers$2,179 NZD

15 data points across 11 retailers

9 retailers$482 NZD to $2,179 NZD

A
Cheapest Retailer
-
$482 NZD
Retailer 2
-
$518 NZD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$537 NZD
View
Retailer 4
-
$637 NZD
View
Price last confirmed 14 days ago
B+
Retailer 5
-
$648 NZD
View
B+
Retailer 6
-
$655 NZD
View
B+
Retailer 7
-
$712 NZD
View
B+
Retailer 8
-
$824 NZD
View
Most Expensive
C
NZ Jewellers
8a4e0068-c8d5-44ca-8bd6-925b1c914e4b · Nov 4
$2,179 NZD
$1,225 USD
View
8 more retailers have this diamond
Prices start from $482 NZDSave up to $1,697 NZD

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
$482 NZD