Heart|Natural|GIA

1.51ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1236656907

Certificate GIA 1236656907

Diamond specifications and retailer prices

From $6,692 USD
As of October 30, 2026
Save $4,060 USD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,834 USD at NZ Jewellers · As of October 21, 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 1236656907. Listed at 9 retailers as of October 29, 2026, with a 61% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236656907
Dimensions6.94 × 8.15 × 4.51 mm
L/W Ratio1.17
Top View
6.94 mm8.15 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1236656907
Side View
Table 59.0%CrownGirdlePavilionCulet: NoneDepth 55.3%

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: $12,834 USD|Low: $4,942 USD|High: $12,834 USD|Avg: $8,168 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
October 30, 2026
Retailer 5$4,942 USD
Retailer 12$6,692 USD
Retailer 7$7,083 USD
Retailer 4$7,149 USD
Retailer 6$7,218 USD
Retailer 2$7,252 USD
Retailer 9$7,673 USD
Retailer 8$7,791 USD
Retailer 3$8,280 USD
Retailer 11$8,854 USD
Retailer 13$9,218 USD
Retailer 10$10,752 USD
NZ Jewellers$12,834 USD

17 data points across 13 retailers

9 retailers$6,692 USD to $10,752 USD

B+
Cheapest Retailer
-
$6,692 USD
B+
Retailer 2
-
$7,083 USD
View
B+
Retailer 3
-
$7,218 USD
£5,684 GBP
View
B+
Retailer 4
-
$7,252 USD
£5,710 GBP
View
B+
Retailer 5
-
$7,673 USD
View
B
Retailer 6
-
$7,791 USD
View
Retailer 7
-
$8,854 USD
View
Price last confirmed 10 days ago
B
Retailer 8
-
$10,752 USD
£8,466 GBP
View
Most Expensive
NZ Jewellers
4d10a256-f519-45c9-b7a5-dd871cc9cfb4 · Oct 21
$12,834 USD
View
Price last confirmed 10 days ago
8 more retailers have this diamond
Prices start from $6,692 USDSave up to $4,060 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
$6,692 USD