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1.28ct M SI2 Round Natural Diamond

GD • M/SI2 • HRD 12018509020

Certificate HRD 12018509020

Diamond specifications and retailer prices

From $1,871 USD
As of November 5, 2026
Save $759 USD (29%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,630 USD 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 M colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade and certified by HRD 12018509020. Listed at 2 retailers as of November 5, 2026, with prices from $1,871 to $2,630, a $759 spread on the same certified stone. Yorxs lists it at $2,630. 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
M
Color
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabHRD
CertificateHRD 12018509020
Dimensions6.75 × 6.81 × 4.35 mm
L/W Ratio1.01
Top View
6.75 mm6.81 mm1.28 ctM / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceMedium
CertificateHRD 12018509020
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 64.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $1,871 USD|Low: $1,871 USD|High: $2,655 USD|Avg: $2,247 USD
Retailer 1
Yorxs
November 5, 2026
Retailer 1$1,871 USD
Yorxs$2,630 USD

20 data points across 2 retailers

2 retailers$1,871 USD to $2,630 USD

B
Cheapest Retailer
-
$1,871 USD
Most Expensive
C
Yorxs
357002637 · Nov 5
$2,630 USD
€2,505 EUR
View
1 more retailer has this diamond
Prices start from $1,871 USDSave up to $759 USD

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
$1,871 USD