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Heart|Natural|GIA

1.51ct E IF Heart Natural Diamond

GD • E/IF • GIA 6194966657

Certificate GIA 6194966657

Diamond specifications and retailer prices

From $18,335 AUD
As of November 4, 2026
Save $5,187 AUD (22%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $23,522 AUD at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6194966657. Listed at 6 retailers as of November 4, 2026, with prices from $18,335 to $23,522, a $5,187 spread on the same certified stone. 77 Diamonds lists it at $23,522. 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
E
Colour
IF
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6194966657
Dimensions8.17 × 8.14 × 3.68 mm
L/W Ratio1.00
Top View
8.17 mm8.14 mm1.51 ctE / IF
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 6194966657
Side View
Table 54.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 45.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $23,522 AUD|Low: $18,021 AUD|High: $34,196 AUD|Avg: $22,944 AUD|+5.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 2$18,335 AUD
Retailer 4$19,152 AUD
Retailer 5$19,613 AUD
Retailer 8$19,832 AUD
Retailer 12$19,890 AUD
Retailer 11$21,211 AUD
Retailer 3$21,635 AUD
Retailer 9$22,938 AUD
77 Diamonds$23,522 AUD
Retailer 6$26,024 AUD
Retailer 10$31,194 AUD
Retailer 7$34,105 AUD

40 data points across 12 retailers

6 retailers$18,335 AUD to $23,522 AUD

B+
Cheapest Retailer
-
$18,335 AUD
B+
Retailer 2
-
$19,152 AUD
View
B+
Retailer 3
-
$19,268 AUD
View
B+
Retailer 4
-
$19,613 AUD
View
Retailer 5
-
$21,635 AUD
View
Price last confirmed 28 days ago
Most Expensive
B
77 Diamonds
HSZVESZKW5B · Nov 5
$23,522 AUD
£12,993 GBP
View
5 more retailers have this diamond
Prices start from $18,335 AUDSave up to $5,187 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.

B+
1.51ct Heart
$18,335 AUD