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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 2568019518

Certificate GIA 2568019518

Diamond specifications and retailer prices

From $5,603 AUD
As of November 6, 2026
Save $1,935 AUD (26%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $7,538 AUD 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 H 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 2568019518. Listed at 6 retailers as of November 6, 2026, with prices from $5,603 to $7,538, a $1,935 spread on the same certified stone. GemTrove lists it at $7,538. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2568019518
Dimensions6.80 × 8.08 × 4.75 mm
L/W Ratio1.19
Culet sizeNone
Key to symbols
Crystal, Feather, Knot, Needle
Top View
6.80 mm8.08 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2568019518
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.8%

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: $5,603 AUD|Low: $5,603 AUD|High: $7,514 AUD|Avg: $6,280 AUD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 1$5,603 AUD
Retailer 3$5,682 AUD
Retailer 2$6,054 AUD
Retailer 5$6,079 AUD
Retailer 4$6,737 AUD

45 data points across 5 retailers

6 retailers$5,603 AUD to $7,538 AUD

A
Cheapest Retailer
-
$5,603 AUD
A
Retailer 2
-
$5,682 AUD
View
A
Retailer 3
-
$6,054 AUD
View
A
Retailer 4
-
$6,079 AUD
View
B+
Retailer 5
-
$6,737 AUD
View
Most Expensive
B+
GemTrove
GT-N-01269521-98 · Nov 6
$7,538 AUD
View
5 more retailers have this diamond
Prices start from $5,603 AUDSave up to $1,935 AUD

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
$5,603 AUD