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Oval|Natural|GIA

1.21ct K SI1 Oval Natural Diamond

K/SI1 • GIA 2566685262

Certificate GIA 2566685262

Diamond specifications and retailer prices

From $2,905 AUD
As of November 7, 2026
Save $1,073 AUD (27%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,978 AUD at Steven Stone · As of November 7, 2026
View at Steven Stone

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included) and certified by GIA 2566685262. Listed at 3 retailers as of November 7, 2026, with prices from $2,905 to $3,978, a $1,073 spread on the same certified stone. Steven Stone lists it at $3,978. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
K
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566685262
Dimensions8.35 × 5.92 × 3.72 mm
L/W Ratio1.41
Top View
8.35 mm5.92 mm1.21 ctK / SI1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566685262
Side View
Table 60.0%CrownGirdlePavilionCuletDepth 62.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: $2,905 AUD|Low: $2,905 AUD|High: $3,978 AUD|Avg: $3,378 AUD
Retailer 1
Retailer 2
Steven Stone
November 7, 2026
Retailer 1$2,905 AUD
Retailer 2$3,250 AUD
Steven Stone$3,978 AUD

1 data point across 3 retailers

3 retailers$2,905 AUD to $3,978 AUD

B+
Cheapest Retailer
-
$2,905 AUD
B
Retailer 2
-
$3,250 AUD
View
Most Expensive
C
Steven Stone
339337430 · Nov 7
$3,978 AUD
£2,152 GBP
View
2 more retailers have this diamond
Prices start from $2,905 AUDSave up to $1,073 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.

B+
1.21ct Oval
$2,905 AUD