Heart|Natural|GIA

1.51ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 2557604008

Certificate GIA 2557604008

Diamond specifications and retailer prices

From $2,639 USD
As of November 6, 2026
Save $987 USD (27%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,626 USD at GemTrove · As of November 6, 2026
View at GemTrove

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557604008. Listed at 8 retailers as of November 6, 2026, with prices from $2,639 to $3,626, a $987 spread on the same certified stone. GemTrove lists it at $3,626. 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

1.51
Carat
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557604008
Dimensions7.02 × 8.11 × 4.76 mm
L/W Ratio1.16
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Pinpoint
Top View
7.02 mm8.11 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557604008
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.7%

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: $2,639 USD|Low: $2,377 USD|High: $3,646 USD|Avg: $2,957 USD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$2,639 USD
Retailer 4$2,661 USD
Retailer 3$2,691 USD
Retailer 7$2,730 USD
Retailer 2$2,857 USD
Retailer 6$3,083 USD
Retailer 5$3,167 USD

42 data points across 7 retailers

8 retailers$2,639 USD to $3,626 USD

A
Cheapest Retailer
-
$2,639 USD
A
Retailer 2
-
$2,661 USD
View
A
Retailer 3
-
$2,691 USD
View
Final sale: no returns
A
Retailer 4
-
$2,730 USD
View
A
Retailer 5
-
$2,857 USD
View
A
Retailer 6
-
$3,083 USD
View
A
Retailer 7
-
$3,167 USD
View
Most Expensive
B+
GemTrove
GT-N-01269485-98 · Nov 6
$3,626 USD
A$5,578 AUD
View
7 more retailers have this diamond
Prices start from $2,639 USDSave up to $987 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
1.51ct Heart
$2,639 USD