Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 1483382477

Certificate GIA 1483382477

Diamond specifications and retailer prices

From $5,576 USD
As of November 4, 2026
Save $4,794 USD (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,370 USD 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 $5,576 to $10,370, a $4,794 spread on the same certified stone. MOH London lists it at $10,370. 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
Color
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: $10,370 USD|Low: $5,409 USD|High: $10,523 USD|Avg: $6,865 USD|-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$5,576 USD
Retailer 9$5,690 USD
Retailer 11$5,902 USD
Retailer 12$5,945 USD
Retailer 4$5,951 USD
Retailer 2$6,660 USD
Retailer 6$6,701 USD
Retailer 10$6,767 USD
Retailer 8$6,849 USD
Retailer 5$7,668 USD
Retailer 7$8,611 USD
MOH London$10,370 USD

37 data points across 12 retailers

19 retailers$5,576 USD to $10,370 USD

B
Cheapest Retailer
-
$5,576 USD
B
Retailer 2
-
$5,690 USD
View
B
Retailer 3
-
$5,902 USD
View
Final sale: no returns
B
Retailer 4
-
$5,945 USD
View
B
Retailer 5
-
$5,951 USD
View
B
Retailer 6
-
$6,297 USD
View
Retailer 7
-
$6,394 USD
View
Price last confirmed 29 days ago
B
Retailer 8
-
$6,660 USD
View
B
Retailer 9
-
$6,701 USD
View
B
Retailer 10
-
$6,767 USD
View
B
Retailer 11
-
$6,840 USD
View
B
Retailer 12
-
$6,840 USD
View
Retailer 13
-
$6,849 USD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$7,060 USD
View
B
Retailer 15
-
$7,220 USD
View
B
Retailer 16
-
$7,668 USD
View
Retailer 17
-
$7,778 USD
View
Price last confirmed 22 days ago
B
Retailer 18
-
$8,611 USD
View
Most Expensive
C
MOH London
A114A9F5E · Nov 4
$10,370 USD
£8,165 GBP
View
18 more retailers have this diamond
Prices start from $5,576 USDSave up to $4,794 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.

B
1.51ct Heart
$5,576 USD