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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

GD • H/SI1 • GIA 1557134574

Certificate GIA 1557134574

Diamond specifications and retailer prices

From $4,757 USD
As of October 30, 2026
Save $7,315 USD (61%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $12,071 USD at NZ Jewellers · As of October 30, 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 H 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 1557134574. Listed at 16 retailers as of October 30, 2026, with prices from $4,757 to $12,071, a $7,315 spread on the same certified stone. NZ Jewellers lists it at $12,071. 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
H
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1557134574
Dimensions6.90 × 8.14 × 4.83 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural
Top View
6.90 mm8.14 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1557134574
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 59.4%

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: Oct 30
Current: $12,071 USD|Low: $3,909 USD|High: $12,071 USD|Avg: $6,201 USD
NZ Jewellers
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 2, 2026
Retailer 15$3,909 USD
Retailer 14$3,938 USD
Retailer 21$4,757 USD
Retailer 8$4,837 USD
Retailer 11$5,189 USD
Retailer 10$5,520 USD
Retailer 12$5,520 USD
Retailer 20$5,702 USD
Retailer 9$5,710 USD
Retailer 22$5,776 USD
Retailer 18$6,035 USD
Retailer 6$6,070 USD
Retailer 7$6,086 USD
Retailer 19$6,538 USD
Retailer 2$6,921 USD
Retailer 17$7,005 USD
Retailer 4$7,544 USD
Retailer 5$7,954 USD
Retailer 3$8,018 USD
Retailer 16$8,867 USD
Retailer 13$10,058 USD
NZ Jewellers$12,071 USD

41 data points across 22 retailers

16 retailers$4,757 USD to $12,071 USD

B+
Cheapest Retailer
-
$4,757 USD
Retailer 2
-
$4,837 USD
SGD 6,536 SGD
View
Price last confirmed 25 days ago
B
Retailer 3
-
$5,702 USD
View
B
Retailer 4
-
$5,776 USD
View
B
Retailer 5
-
$6,035 USD
View
B
Retailer 6
-
$6,070 USD
View
B
Retailer 7
-
$6,086 USD
View
B
Retailer 8
-
$6,538 USD
View
B
Retailer 9
-
$6,921 USD
£5,450 GBP
View
Retailer 10
-
$7,005 USD
A$10,777 AUD
View
Price last confirmed 11 days ago
B
Retailer 11
-
$7,159 USD
View
B
Retailer 12
-
$7,544 USD
View
B
Retailer 13
-
$8,018 USD
View
B
Retailer 14
-
$8,867 USD
ZAR 143,251 ZAR
View
B
Retailer 15
-
$10,058 USD
£7,920 GBP
View
Most Expensive
C
NZ Jewellers
18bf8836-719f-4766-94cd-708c02634024 · Oct 30
$12,071 USD
View
15 more retailers have this diamond
Prices start from $4,757 USDSave up to $7,315 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
$4,757 USD