Marquise|Natural|GIA

1.28ct M SI1 Marquise Natural Diamond

EX • M/SI1 • GIA 6204367473

Certificate GIA 6204367473

Diamond specifications and retailer prices

From $2,355 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: $2,355 USD at B2C Jewels
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at B2C Jewels

About this 1.28ct natural marquise diamond

This 1.28ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6204367473. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.28
Carat
M
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6204367473
Dimensions10.71 × 5.81 mm
L/W Ratio1.84
Top View
10.71 mm5.81 mm1.28 ctM / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA 6204367473
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 62.0%

Caratlytics Score

How it works →
C
Average
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Price History

Last verified: Nov 6
Current: $2,355 USD|Low: $2,331 USD|High: $2,460 USD|Avg: $2,382 USD|-4.3%
September 23, 2026
B2C Jewels$2,355 USD

3 data points across 1 retailer

1 retailer

C
B2C Jewels
17601236 · Nov 6
$2,355 USD
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C
1.28ct Marquise
$2,355 USD