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Round|Natural|GIA

1.28ct F SI1 Round Natural Diamond

VG • F/SI1 • GIA 6157771128

Certificate GIA 6157771128

Diamond specifications and retailer prices

From $6,025 CAD
$4,313 USD
As of October 31, 2026
Save $2,475 CAD (29%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $8,500 CAD at Yorxs · As of November 2, 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6157771128. Listed at 6 retailers as of October 31, 2026, with prices from $6,025 to $8,500, a $2,475 spread on the same certified stone. Yorxs lists it at $8,500. 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

1.28
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6157771128
Dimensions6.94 × 7.00 × 4.29 mm
L/W Ratio1.01
Top View
6.94 mm7.00 mm1.28 ctF / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6157771128
Side View
Table 61.0%CrownGirdle: MediumPavilionCulet: NoneDepth 61.5%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $8,458 CAD|Low: $5,945 CAD|High: $8,580 CAD|Avg: $7,619 CAD|-0.2%
Retailer 1
Retailer 2
Yorxs
November 2, 2026
Retailer 2$6,025 CAD
Retailer 1$8,458 CAD
Yorxs$8,500 CAD

35 data points across 3 retailers

6 retailers$6,025 CAD to $8,500 CAD

B+
Cheapest Retailer
-
$6,025 CAD
$4,313 USD
B+
Retailer 2
-
$6,132 CAD
$4,390 USD
View
B+
Retailer 3
-
$6,310 CAD
$4,517 USD
View
B+
Retailer 4
-
$6,387 CAD
$4,572 USD
View
B
Retailer 5
-
$8,458 CAD
£4,768 GBP
View
Most Expensive
B
Yorxs
RB4510 · Nov 2
$8,500 CAD
€5,795 EUR
View
5 more retailers have this diamond
Prices start from $6,025 CADSave up to $2,475 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
$6,025 CAD