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Oval|Natural|GIA

0.50ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 6551949131

Certificate GIA 6551949131

Diamond specifications and retailer prices

From $386 NZD
As of November 6, 2026
Save $539 NZD (58%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,479 NZD at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 0.5ct natural oval diamond

This 0.5ct natural oval 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 stated by the retailer rather than the lab and certified by GIA 6551949131. Listed at 8 retailers as of November 3, 2026, with a 140% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.50
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551949131
Dimensions6.70 × 4.29 × 2.64 mm
L/W Ratio1.56
Girdle conditionSlightly Thick to Thick
Key to symbols
Feather
Top View
6.70 mm4.29 mm0.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551949131
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.5%

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: $386 NZD|Low: $386 NZD|High: $1,506 NZD|Avg: $770 NZD|-9.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 1$386 NZD
Retailer 5$462 NZD
Retailer 2$572 NZD
Retailer 3$925 NZD
Retailer 4$1,250 NZD

46 data points across 5 retailers

8 retailers$386 NZD to $925 NZD

A
Cheapest Retailer
-
$386 NZD
A
Retailer 2
-
$462 NZD
View
A
Retailer 3
-
$572 NZD
View
Retailer 4
-
$646 NZD
View
Price last confirmed 38 days ago
Retailer 5
-
$646 NZD
View
Price last confirmed 30 days ago
B+
Retailer 6
-
$925 NZD
View
Retailer 7
-
$1,250 NZD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
b84248d8-cac0-4099-8181-6f176bf1a40a · Oct 6
$2,479 NZD
$1,374 USD
View
Price last confirmed 31 days ago
7 more retailers have this diamond
Prices start from $386 NZDSave up to $539 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
0.50ct Oval
$386 NZD