Heart|Natural|GIA

1.51ct K SI1 Heart Natural Diamond

GD • K/SI1 • GIA 6462181862

Certificate GIA 6462181862

Diamond specifications and retailer prices

From $2,931 USD
As of November 6, 2026
Save $3,352 USD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,283 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6462181862. Listed at 10 retailers as of November 4, 2026, with prices from $2,931 to $6,283, a $3,352 spread on the same certified stone. MOH London lists it at $6,283. 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
K
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6462181862
Dimensions7.28 × 6.05 × 4.25 mm
L/W Ratio1.20
Top View
7.28 mm6.05 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6462181862
Side View
Table 53.0%CrownGirdle: ThickPavilionCulet: NoneDepth 70.2%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $6,283 USD|Low: $2,892 USD|High: $6,375 USD|Avg: $4,154 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 5$2,931 USD
Retailer 6$3,344 USD
Retailer 8$3,605 USD
Retailer 7$3,767 USD
Retailer 2$3,898 USD
Retailer 9$4,070 USD
Retailer 3$4,385 USD
Retailer 4$4,598 USD
MOH London$6,283 USD

41 data points across 9 retailers

10 retailers$2,931 USD to $6,283 USD

B+
Cheapest Retailer
-
$2,931 USD
B+
Retailer 2
-
$3,344 USD
View
B+
Retailer 3
-
$3,605 USD
View
Retailer 4
-
$3,767 USD
View
Price last confirmed 30 days ago
B+
Retailer 5
-
$3,898 USD
View
B
Retailer 6
-
$3,912 USD
View
B
Retailer 7
-
$4,070 USD
View
B
Retailer 8
-
$4,385 USD
View
B
Retailer 9
-
$4,598 USD
View
Most Expensive
C
MOH London
BD868D2F7 · Nov 4
$6,283 USD
£4,947 GBP
View
9 more retailers have this diamond
Prices start from $2,931 USDSave up to $3,352 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
$2,931 USD