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Round|Natural|GIA

0.28ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2556777817

Certificate GIA 2556777817

Diamond specifications and retailer prices

From $156 AUD
As of November 6, 2026
Save $347 AUD (69%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $503 AUD at B2C Jewels · As of November 6, 2026
View at B2C Jewels

About this 0.28ct natural round diamond

This 0.28ct natural round sits in the sub-half-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556777817. Listed at 6 retailers as of November 6, 2026, with prices from $156 to $503, a $347 spread on the same certified stone. B2C Jewels lists it at $503. 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

0.28
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556777817
Dimensions4.24 × 4.25 × 2.58 mm
L/W Ratio1.00
Star length55%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
4.24 mm4.25 mm0.28 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556777817
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.7%

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: $503 AUD|Low: $156 AUD|High: $504 AUD|Avg: $302 AUD|+2.6%
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 2$156 AUD
Retailer 5$200 AUD
Retailer 4$244 AUD
Retailer 6$257 AUD
Retailer 3$433 AUD
B2C Jewels$503 AUD

41 data points across 6 retailers

6 retailers$156 AUD to $503 AUD

A
Cheapest Retailer
-
$156 AUD
A
Retailer 2
-
$200 AUD
View
A
Retailer 3
-
$244 AUD
View
Retailer 4
-
$257 AUD
View
Price last confirmed 43 days ago
B+
Retailer 5
-
$433 AUD
View
Most Expensive
B+
B2C Jewels
35656576 · Nov 6
$503 AUD
$352 USD
View
5 more retailers have this diamond
Prices start from $156 AUDSave up to $347 AUD

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
0.28ct Round
$156 AUD