Heart|Natural|GIA

1.51ct D SI2 Heart Natural Diamond

ID • D/SI2 • GIA 3555112856

Certificate GIA 3555112856

Diamond specifications and retailer prices

From $5,389 USD
As of October 31, 2026
Save $3,260 USD (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,766 USD at NZ Jewellers · As of September 29, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555112856. Listed at 12 retailers as of October 29, 2026, with a 60% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555112856
Dimensions7.71 × 7.01 × 4.75 mm
L/W Ratio1.10
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
7.71 mm7.01 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3555112856
Side View
Table 57.0%CrownGirdlePavilionCulet: NoneDepth 61.6%

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: Oct 31
Current: $6,381 USD|Low: $4,940 USD|High: $8,706 USD|Avg: $6,203 USD|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 6$5,389 USD
Retailer 3$5,518 USD
Retailer 2$5,696 USD
Retailer 5$5,839 USD
Retailer 1$6,381 USD
Retailer 4$8,649 USD

42 data points across 6 retailers

12 retailers$5,389 USD to $8,649 USD

A
Cheapest Retailer
-
$5,389 USD
Final sale: no returns
A
Retailer 2
-
$5,518 USD
£4,345 GBP
View
A
Retailer 3
-
$5,696 USD
£4,485 GBP
View
Retailer 4
-
$5,839 USD
View
Price last confirmed 24 days ago
Retailer 5
-
$5,839 USD
View
Price last confirmed 23 days ago
Retailer 6
-
$5,839 USD
View
Price last confirmed 30 days ago
A
Retailer 7
-
$5,839 USD
View
B+
Retailer 8
-
$6,381 USD
€6,077 EUR
View
Retailer 9
-
$6,737 USD
View
Price last confirmed 68 days ago
Retailer 10
-
$6,737 USD
View
Price last confirmed 32 days ago
B+
Retailer 11
-
$8,649 USD
£6,810 GBP
View
Most Expensive
NZ Jewellers
73bad57c-9b5f-48e9-b54a-d0843ec0329b · Sep 29
$9,766 USD
View
Price last confirmed 32 days ago
11 more retailers have this diamond
Prices start from $5,389 USDSave up to $3,260 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
$5,389 USD