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Heart|Natural|GIA

1.00ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 2557674671

Certificate GIA 2557674671

Diamond specifications and retailer prices

From $1,529 USD
As of November 6, 2026
Save $2,134 USD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,342 USD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded I 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 2557674671. Listed at 15 retailers as of November 4, 2026, with a 140% 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557674671
Dimensions6.98 × 5.97 × 4.09 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Needle
Top View
6.98 mm5.97 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557674671
Side View
Table 63.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 58.7%

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: $4,342 USD|Low: $1,447 USD|High: $4,342 USD|Avg: $2,491 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
November 6, 2026
Retailer 3$1,529 USD
Retailer 4$1,737 USD
Retailer 12$1,882 USD
Retailer 2$2,034 USD
Retailer 11$2,171 USD
Retailer 8$2,220 USD
Retailer 9$2,220 USD
Retailer 10$2,290 USD
Retailer 6$2,559 USD
Retailer 5$2,847 USD
Retailer 7$3,663 USD
NZ Jewellers$4,342 USD

39 data points across 12 retailers

15 retailers$1,529 USD to $3,663 USD

A
Cheapest Retailer
-
$1,529 USD
A
Retailer 2
-
$1,649 USD
View
Retailer 3
-
$1,882 USD
View
Price last confirmed 17 days ago
Retailer 4
-
$1,968 USD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$1,970 USD
View
B+
Retailer 6
-
$2,034 USD
View
Retailer 7
-
$2,171 USD
View
Price last confirmed 16 days ago
B+
Retailer 8
-
$2,220 USD
View
B+
Retailer 9
-
$2,220 USD
View
B
Retailer 10
-
$2,290 USD
View
B+
Retailer 11
-
$2,467 USD
View
B+
Retailer 12
-
$2,559 USD
View
B
Retailer 13
-
$2,847 USD
View
B
Retailer 14
-
$3,663 USD
View
Most Expensive
NZ Jewellers
bb374d86-57dd-448b-8eae-e348fdbf6e54 · Oct 21
$4,342 USD
View
Price last confirmed 16 days ago
14 more retailers have this diamond
Prices start from $1,529 USDSave up to $2,134 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
$1,529 USD