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Heart|Natural|GIA

1.21ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 10797990

Certificate GIA 10797990

Diamond specifications and retailer prices

From $9,957 AUD
£5,387 GBP
As of November 7, 2026
1 retailer carries this diamond
Only listing: $9,957 AUD at 77 Diamonds
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 77 Diamonds

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded H 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 10797990. Listed at a single retailer as of November 7, 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 10797990
Dimensions6.74 × 7.17 × 4.27 mm
L/W Ratio1.06
Top View
6.74 mm7.17 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 10797990
Side View
Table 61.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 59.6%

Caratlytics Score

How it works →
C
Average
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Price History

Last verified: Nov 7
Current: $9,957 AUD|Low: $7,133 AUD|High: $10,045 AUD|Avg: $8,528 AUD|-0.9%
77 Diamonds
Retailer 2
November 7, 2026
Retailer 2$7,133 AUD
77 Diamonds$9,957 AUD

21 data points across 2 retailers

1 retailer

C
77 Diamonds
HSZCGSAGYGJ · Nov 7
$9,957 AUD
£5,387 GBP
View

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.

C
1.21ct Heart
$9,957 AUD