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Round|Natural|GIA

1.28ct K I1 Round Natural Diamond

EX • K/I1 • GIA 2121010513

Certificate GIA 2121010513

Diamond specifications and retailer prices

From $3,923 CAD
As of November 6, 2026
Save $717 CAD (15%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,640 CAD at Yorxs · As of November 5, 2026
View at Yorxs

About this 1.28ct natural round diamond

This 1.28ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 2121010513. Listed at 2 retailers as of November 5, 2026, with prices from $3,923 to $4,640, a $717 spread on the same certified stone. Yorxs lists it at $4,640. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
K
Color
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2121010513
Dimensions7.01 × 7.04 × 4.28 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Girdle conditionTHIN TO MEDIUM
Top View
7.01 mm7.04 mm1.28 ctK / I1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2121010513
Side View
Table 57.0%Crown 34.5°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 60.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $3,923 CAD|Low: $2,377 CAD|High: $4,700 CAD|Avg: $3,213 CAD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
November 5, 2026
Retailer 3$2,377 CAD
Retailer 2$2,416 CAD
Retailer 4$3,050 CAD
Retailer 1$3,923 CAD
Yorxs$4,640 CAD

20 data points across 5 retailers

2 retailers$3,923 CAD to $4,640 CAD

B
Cheapest Retailer
-
$3,923 CAD
Most Expensive
B
Yorxs
620946214 · Nov 5
$4,640 CAD
€3,164 EUR
View
1 more retailer has this diamond
Prices start from $3,923 CADSave up to $717 CAD

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
1.28ct Round
$3,923 CAD