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Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 6531045921

Certificate GIA 6531045921

Diamond specifications and retailer prices

From €1,621 EUR
$1,810 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: €1,621 EUR at The Diamond Guys
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 The Diamond Guys

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6531045921. 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

1.21
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.52°
Pavilion angle37.86°
OriginNatural
Grading LabGIA
CertificateGIA 6531045921
Dimensions7.37 × 6.29 × 3.72 mm
L/W Ratio1.17
Top View
7.37 mm6.29 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531045921
Side View
Table 59.0%Crown 37.52°Girdle: MED-THKPavilion 37.86°Culet: NoneDepth 59.1%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: €1,506 EUR|Low: €1,010 EUR|High: €2,730 EUR|Avg: €1,755 EUR|-8.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
The Diamond Guys
September 15, 2026
Retailer 10€1,010 EUR
Retailer 1€1,506 EUR
Retailer 2€1,517 EUR
Retailer 5€1,581 EUR
Retailer 6€1,618 EUR
The Diamond Guys€1,621 EUR
Retailer 3€1,693 EUR
Retailer 4€1,716 EUR
Retailer 8€1,997 EUR
Retailer 9€2,090 EUR
Retailer 7€2,468 EUR

75 data points across 11 retailers

1 retailer

B+
The Diamond Guys
1865867418 · Nov 6
€1,621 EUR
$1,810 USD
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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 Heart
€1,621 EUR