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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 1483382477

Certificate GIA 1483382477

Diamond specifications and retailer prices

From $8,115 AUD
As of November 4, 2026
Save $6,977 AUD (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,092 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1483382477. Listed at 19 retailers as of November 4, 2026, with prices from $8,115 to $15,092, a $6,977 spread on the same certified stone. MOH London lists it at $15,092. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1483382477
Dimensions6.95 × 6.68 × 4.49 mm
L/W Ratio1.04
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Natural
Top View
6.95 mm6.68 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1483382477
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.2%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $15,092 AUD|Low: $7,872 AUD|High: $15,315 AUD|Avg: $9,991 AUD|-1.2%
MOH London
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 3$8,115 AUD
Retailer 9$8,281 AUD
Retailer 11$8,590 AUD
Retailer 12$8,652 AUD
Retailer 4$8,661 AUD
Retailer 2$9,693 AUD
Retailer 6$9,753 AUD
Retailer 10$9,849 AUD
Retailer 8$9,968 AUD
Retailer 5$11,160 AUD
Retailer 7$12,532 AUD
MOH London$15,092 AUD

37 data points across 12 retailers

19 retailers$8,115 AUD to $15,092 AUD

B
Cheapest Retailer
-
$8,115 AUD
B
Retailer 2
-
$8,281 AUD
View
B
Retailer 3
-
$8,590 AUD
View
Final sale: no returns
B
Retailer 4
-
$8,652 AUD
View
B
Retailer 5
-
$8,661 AUD
View
B
Retailer 6
-
$9,165 AUD
View
Retailer 7
-
$9,306 AUD
View
Price last confirmed 29 days ago
B
Retailer 8
-
$9,693 AUD
View
B
Retailer 9
-
$9,753 AUD
View
B
Retailer 10
-
$9,849 AUD
View
B
Retailer 11
-
$9,955 AUD
View
B
Retailer 12
-
$9,955 AUD
View
Retailer 13
-
$9,968 AUD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$10,275 AUD
View
B
Retailer 15
-
$10,508 AUD
View
B
Retailer 16
-
$11,160 AUD
View
Retailer 17
-
$11,320 AUD
View
Price last confirmed 22 days ago
B
Retailer 18
-
$12,532 AUD
View
Most Expensive
C
MOH London
A114A9F5E · Nov 4
$15,092 AUD
£8,165 GBP
View
18 more retailers have this diamond
Prices start from $8,115 AUDSave up to $6,977 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
$8,115 AUD