Heart|Natural|GIA

1.21ct H SI2 Heart Natural Diamond

ID • H/SI2 • GIA 1558163586

Certificate GIA 1558163586

Diamond specifications and retailer prices

From $2,008 USD
As of October 30, 2026
Save $2,493 USD (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,319 USD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558163586. Listed at 14 retailers as of October 30, 2026, with a 124% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558163586
Dimensions6.55 × 7.18 × 4.32 mm
L/W Ratio1.10
Culet sizeNone
Key to symbols
Twinning Wisp, Needle, Indented Natural
Top View
6.55 mm7.18 mm1.21 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558163586
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,319 USD|Low: $1,773 USD|High: $5,319 USD|Avg: $3,009 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 5$2,028 USD
Retailer 9$2,128 USD
Retailer 7$2,305 USD
Retailer 8$2,411 USD
Retailer 2$2,540 USD
Retailer 6$2,659 USD
Retailer 4$3,208 USD
Retailer 3$4,501 USD
NZ Jewellers$5,319 USD

41 data points across 9 retailers

14 retailers$2,008 USD to $4,501 USD

A
Cheapest Retailer
-
$2,008 USD
A
Retailer 2
-
$2,028 USD
View
A
Retailer 3
-
$2,128 USD
View
Final sale: no returns
Retailer 4
-
$2,305 USD
View
Price last confirmed 10 days ago
Retailer 5
-
$2,411 USD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$2,440 USD
View
B+
Retailer 7
-
$2,540 USD
£2,000 GBP
View
Retailer 8
-
$2,659 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$2,680 USD
View
B+
Retailer 10
-
$2,680 USD
View
B+
Retailer 11
-
$2,770 USD
View
B+
Retailer 12
-
$3,208 USD
€3,055 EUR
View
B
Retailer 13
-
$4,501 USD
£3,544 GBP
View
Most Expensive
NZ Jewellers
947fbdde-43a0-4ecc-abb4-39f7641ae374 · Oct 21
$5,319 USD
View
Price last confirmed 12 days ago
13 more retailers have this diamond
Prices start from $2,008 USDSave up to $2,493 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.

A
1.21ct Heart
$2,008 USD