Heart|Natural|GIA

1.00ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6551331596

Certificate GIA 6551331596

Diamond specifications and retailer prices

From $1,209 USD
As of November 6, 2026
Save $2,696 USD (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,905 USD at NZ Jewellers · As of November 5, 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 6551331596. Listed at 13 retailers as of November 5, 2026, with prices from $1,209 to $3,905, a $2,696 spread on the same certified stone. NZ Jewellers lists it at $3,905. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551331596
Dimensions5.97 × 6.92 × 4.05 mm
L/W Ratio1.16
Girdle conditionVery Thick
Top View
5.97 mm6.92 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551331596
Side View
Table 54.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 58.5%

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: Nov 6
Current: $3,905 USD|Low: $1,209 USD|High: $3,905 USD|Avg: $1,904 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 2$1,209 USD
Retailer 11$1,278 USD
Retailer 12$1,484 USD
Retailer 10$1,485 USD
Retailer 5$1,553 USD
Retailer 3$1,579 USD
Retailer 4$1,737 USD
Retailer 7$1,775 USD
Retailer 8$1,953 USD
Retailer 6$2,174 USD
Retailer 9$2,796 USD
NZ Jewellers$3,905 USD

25 data points across 12 retailers

13 retailers$1,209 USD to $3,905 USD

A
Cheapest Retailer
-
$1,209 USD
A
Retailer 2
-
$1,278 USD
View
Final sale: no returns
A
Retailer 3
-
$1,484 USD
View
A
Retailer 4
-
$1,485 USD
View
A
Retailer 5
-
$1,553 USD
View
A
Retailer 6
-
$1,579 USD
View
B+
Retailer 7
-
$1,737 USD
View
B+
Retailer 8
-
$1,775 USD
View
B+
Retailer 9
-
$1,953 USD
View
B+
Retailer 10
-
$2,174 USD
View
Retailer 11
-
$2,183 USD
View
Price last confirmed 33 days ago
B
Retailer 12
-
$2,796 USD
View
Most Expensive
B
NZ Jewellers
78097f80-a556-4d92-a4a2-3b91b4f8b8e4 · Nov 5
$3,905 USD
View
12 more retailers have this diamond
Prices start from $1,209 USDSave up to $2,696 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
$1,209 USD