CaratHunter
Plans
Heart|Natural|GIA

1.00ct J I1 Heart Natural Diamond

ID • J/I1 • GIA 1318847097

Certificate GIA 1318847097

Diamond specifications and retailer prices

From $1,728 SGD
₹128,701 INR
As of October 31, 2026
Save $1,514 SGD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,787 SGD at NZ Jewellers · As of October 30, 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 I1 clarity (included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1318847097. Listed at 9 retailers as of October 31, 2026, with a 88% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
J
Colour
I1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1318847097
Dimensions6.15 × 6.73 × 3.92 mm
L/W Ratio1.09
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural, Natural
Top View
6.15 mm6.73 mm1.00 ctJ / I1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1318847097
Side View
Table 51.0%CrownGirdlePavilionCulet: NoneDepth 58.3%

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: Oct 31
Current: $1,728 SGD|Low: $1,718 SGD|High: $3,242 SGD|Avg: $2,384 SGD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 1$1,728 SGD
Retailer 2$1,735 SGD
Retailer 4$2,162 SGD
Retailer 5$2,203 SGD
Retailer 6$2,738 SGD
Retailer 7$2,838 SGD
Retailer 3$3,242 SGD

45 data points across 7 retailers

9 retailers$1,728 SGD to $3,242 SGD

A
Cheapest Retailer
-
$1,728 SGD
₹128,701 INR
A
Retailer 2
-
$1,735 SGD
HK$10,600 HKD
View
B+
Retailer 3
-
$2,162 SGD
$1,691 USD
View
B+
Retailer 4
-
$2,203 SGD
$1,723 USD
View
B
Retailer 5
-
$2,373 SGD
$1,856 USD
View
B
Retailer 6
-
$2,373 SGD
$1,856 USD
View
B
Retailer 7
-
$2,738 SGD
$2,142 USD
View
B
Retailer 8
-
$3,242 SGD
€2,415 EUR
View
Most Expensive
NZ Jewellers
550d20a8-f967-4b2c-a54e-7f5933e9d787 · Oct 30
$5,787 SGD
$4,527 USD
View
Price under review
8 more retailers have this diamond
Prices start from $1,728 SGDSave up to $1,514 SGD

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
$1,728 SGD