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Heart|Natural|GIA

1.00ct J SI2 Heart Natural Diamond

ID • J/SI2 • GIA 5231910068

Certificate GIA 5231910068

Diamond specifications and retailer prices

From $1,178 USD
As of November 6, 2026
Save $988 USD (46%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,853 USD at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded J 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 5231910068. Listed at 13 retailers as of November 6, 2026, with a 84% 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

1.00
Carat
J
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231910068
Dimensions5.80 × 6.66 × 4.06 mm
L/W Ratio1.15
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Natural
Top View
5.80 mm6.66 mm1.00 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231910068
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.9%

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: $1,589 USD|Low: $1,178 USD|High: $2,809 USD|Avg: $1,711 USD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7$1,178 USD
Retailer 11$1,270 USD
Retailer 2$1,431 USD
Retailer 12$1,480 USD
Retailer 4$1,518 USD
Retailer 1$1,589 USD
Retailer 8$1,710 USD
Retailer 9$1,710 USD
Retailer 10$1,770 USD
Retailer 3$1,897 USD
Retailer 5$2,166 USD
Retailer 6$2,809 USD

32 data points across 12 retailers

13 retailers$1,178 USD to $2,166 USD

A
Cheapest Retailer
-
$1,178 USD
A
Retailer 2
-
$1,270 USD
View
Retailer 3
-
$1,431 USD
View
Price last confirmed 30 days ago
B+
Retailer 4
-
$1,480 USD
View
Retailer 5
-
$1,497 USD
View
Price last confirmed 36 days ago
B+
Retailer 6
-
$1,589 USD
View
Retailer 7
-
$1,651 USD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
$1,710 USD
View
B+
Retailer 9
-
$1,710 USD
View
B+
Retailer 10
-
$1,770 USD
View
B+
Retailer 11
-
$2,166 USD
View
Retailer 12
-
$2,809 USD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
b0e3e870-6a55-45e0-b748-5fc17e6bb4b0 · Oct 6
$3,853 USD
View
Price last confirmed 31 days ago
12 more retailers have this diamond
Prices start from $1,178 USDSave up to $988 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
1.00ct Heart
$1,178 USD