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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 $271 USD
As of November 5, 2026
Save $954 USD (78%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,225 USD 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 $271 to $1,225, a $954 spread on the same certified stone. NZ Jewellers lists it at $1,225. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,225 USD|Low: $271 USD|High: $1,225 USD|Avg: $445 USD
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$271 USD
Retailer 5$284 USD
Retailer 9$291 USD
Retailer 4$302 USD
Retailer 8$364 USD
Retailer 6$368 USD
Retailer 11$400 USD
Retailer 3$406 USD
Retailer 2$463 USD
Retailer 10$474 USD
NZ Jewellers$1,225 USD

15 data points across 11 retailers

9 retailers$271 USD to $1,225 USD

A
Cheapest Retailer
-
$271 USD
Retailer 2
-
$291 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$302 USD
View
Retailer 4
-
$358 USD
View
Price last confirmed 14 days ago
B+
Retailer 5
-
$364 USD
View
B+
Retailer 6
-
$368 USD
View
B+
Retailer 7
-
$400 USD
View
B+
Retailer 8
-
$463 USD
View
Most Expensive
C
NZ Jewellers
8a4e0068-c8d5-44ca-8bd6-925b1c914e4b · Nov 4
$1,225 USD
View
8 more retailers have this diamond
Prices start from $271 USDSave up to $954 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
0.51ct Round
$271 USD