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Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

VG • F/SI1 • GIA 6551629134

Certificate GIA 6551629134

Diamond specifications and retailer prices

From $5,972 AUD
HK$32,700 HKD
As of November 2, 2026
Save $6,729 AUD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $14,824 AUD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551629134. Listed at 17 retailers as of November 2, 2026, with a 113% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551629134
Dimensions6.72 × 7.82 × 4.99 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
6.72 mm7.82 mm1.51 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551629134
Side View
Table 56.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.8%

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 2
Current: $7,781 AUD|Low: $5,881 AUD|High: $13,054 AUD|Avg: $8,104 AUD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 3, 2026
Retailer 11$5,972 AUD
Retailer 15$5,979 AUD
Retailer 14$6,305 AUD
Retailer 13$6,668 AUD
Retailer 4$6,738 AUD
Retailer 3$6,792 AUD
Retailer 8$6,818 AUD
Retailer 6$6,935 AUD
Retailer 10$7,263 AUD
Retailer 1$7,781 AUD
Retailer 7$8,528 AUD
Retailer 2$9,803 AUD
Retailer 12$9,817 AUD
Retailer 5$12,542 AUD
Retailer 9$12,701 AUD

25 data points across 15 retailers

17 retailers$5,972 AUD to $12,701 AUD

A
Cheapest Retailer
-
$5,972 AUD
HK$32,700 HKD
A
Retailer 2
-
$5,979 AUD
$4,190 USD
View
A
Retailer 3
-
$6,305 AUD
$4,419 USD
View
A
Retailer 4
-
$6,668 AUD
$4,673 USD
View
Final sale: no returns
A
Retailer 5
-
$6,738 AUD
$4,722 USD
View
A
Retailer 6
-
$6,792 AUD
$4,760 USD
View
A
Retailer 7
-
$6,818 AUD
€4,551 EUR
View
Retailer 8
-
$6,935 AUD
$4,860 USD
View
Price last confirmed 18 days ago
B+
Retailer 9
-
$7,263 AUD
$5,090 USD
View
B+
Retailer 10
-
$7,781 AUD
£4,293 GBP
View
Retailer 11
-
$8,528 AUD
View
Price last confirmed 24 days ago
B+
Retailer 12
-
$9,125 AUD
View
B
Retailer 13
-
$9,803 AUD
ZAR 110,985 ZAR
View
B
Retailer 14
-
$9,817 AUD
$6,880 USD
View
Retailer 15
-
$12,542 AUD
$8,790 USD
View
Price last confirmed 12 days ago
B
Retailer 16
-
$12,701 AUD
£7,009 GBP
View
Most Expensive
NZ Jewellers
5751a6e1-0656-4f28-9314-4eb3e3b90e49 · Sep 25
$14,824 AUD
$10,389 USD
View
Price last confirmed 38 days ago
16 more retailers have this diamond
Prices start from $5,972 AUDSave up to $6,729 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
$5,972 AUD