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Heart|Natural|GIA

1.20ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1549768433

Certificate GIA 1549768433

Diamond specifications and retailer prices

From $1,753 USD
As of November 6, 2026
Save $2,300 USD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,863 USD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct 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 1549768433. Listed at 18 retailers as of November 2, 2026, with a 131% 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

1.20
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1549768433
Dimensions6.68 × 7.17 × 4.43 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Indented Natural, Natural
Top View
6.68 mm7.17 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1549768433
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $4,863 USD|Low: $1,753 USD|High: $4,863 USD|Avg: $2,715 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 13$1,753 USD
Retailer 2$1,834 USD
Retailer 11$2,069 USD
Retailer 14$2,135 USD
Retailer 5$2,326 USD
Retailer 6$2,326 USD
Retailer 3$2,434 USD
Retailer 8$2,441 USD
Retailer 9$2,514 USD
Retailer 4$2,684 USD
Retailer 10$2,824 USD
Retailer 7$2,873 USD
Retailer 12$4,053 USD
NZ Jewellers$4,863 USD

30 data points across 14 retailers

18 retailers$1,753 USD to $4,053 USD

A
Cheapest Retailer
-
$1,753 USD
A
Retailer 2
-
$1,834 USD
View
B+
Retailer 3
-
$2,069 USD
View
B+
Retailer 4
-
$2,135 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,217 USD
View
B+
Retailer 6
-
$2,220 USD
View
Retailer 7
-
$2,326 USD
View
Price last confirmed 19 days ago
Retailer 8
-
$2,326 USD
View
Price last confirmed 21 days ago
B
Retailer 9
-
$2,377 USD
View
Retailer 10
-
$2,434 USD
View
Price last confirmed 21 days ago
B
Retailer 11
-
$2,441 USD
View
B
Retailer 12
-
$2,514 USD
View
Retailer 13
-
$2,684 USD
View
Price last confirmed 18 days ago
B+
Retailer 14
-
$2,824 USD
View
B
Retailer 15
-
$2,873 USD
View
Retailer 16
-
$2,879 USD
View
Price last confirmed 30 days ago
B
Retailer 17
-
$4,053 USD
View
Most Expensive
NZ Jewellers
1d8c86bb-cf4d-4e68-8c48-ec0ff29708cf · Oct 18
$4,863 USD
View
Price last confirmed 19 days ago
17 more retailers have this diamond
Prices start from $1,753 USDSave up to $2,300 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
1.20ct Heart
$1,753 USD