Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

VG • H/SI1 • GIA 5231997262

Certificate GIA 5231997262

Diamond specifications and retailer prices

From $3,763 USD
HK$29,400 HKD
As of November 1, 2026
Save $4,218 USD (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,670 USD at NZ Jewellers · As of September 25, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 5231997262. Listed at 18 retailers as of October 27, 2026, with a 112% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231997262
Dimensions6.95 × 7.95 × 4.68 mm
L/W Ratio1.14
Girdle conditionFaceted
Top View
6.95 mm7.95 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231997262
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,176 USD|Low: $3,763 USD|High: $8,858 USD|Avg: $5,114 USD|-11.4%
Retailer 1
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
November 2, 2026
Retailer 13$3,763 USD
Retailer 12$3,810 USD
Retailer 10$4,030 USD
Retailer 1$4,176 USD
Retailer 6$4,272 USD
Retailer 7$4,280 USD
Retailer 4$4,294 USD
Retailer 15$4,299 USD
Retailer 3$4,535 USD
Retailer 11$4,540 USD
Retailer 2$4,789 USD
Retailer 9$4,967 USD
Retailer 8$5,648 USD
Retailer 16$6,140 USD
Retailer 14$7,844 USD
Retailer 5$7,981 USD

26 data points across 16 retailers

18 retailers$3,763 USD to $7,981 USD

A
Cheapest Retailer
-
$3,763 USD
HK$29,400 HKD
A
Retailer 2
-
$3,810 USD
View
A
Retailer 3
-
$4,030 USD
View
A
Retailer 4
-
$4,176 USD
View
Final sale: no returns
A
Retailer 5
-
$4,272 USD
View
A
Retailer 6
-
$4,280 USD
View
A
Retailer 7
-
$4,294 USD
View
A
Retailer 8
-
$4,299 USD
€4,094 EUR
View
B+
Retailer 9
-
$4,535 USD
View
B+
Retailer 10
-
$4,540 USD
View
B+
Retailer 11
-
$4,789 USD
View
B+
Retailer 12
-
$4,967 USD
£3,911 GBP
View
Retailer 13
-
$5,648 USD
A$8,689 AUD
View
Price last confirmed 23 days ago
B
Retailer 14
-
$5,699 USD
A$8,768 AUD
View
B+
Retailer 15
-
$6,140 USD
ZAR 99,190 ZAR
View
B
Retailer 16
-
$7,844 USD
£6,176 GBP
View
B
Retailer 17
-
$7,981 USD
View
Most Expensive
NZ Jewellers
a7f576fe-f550-4bb9-97c3-38e66aeea21e · Sep 25
$9,670 USD
View
Price last confirmed 37 days ago
17 more retailers have this diamond
Prices start from $3,763 USDSave up to $4,218 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.

A
1.51ct Heart
$3,763 USD