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Heart|Natural|GIA

1.51ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1236656907

Certificate GIA 1236656907

Diamond specifications and retailer prices

From €5,966 EUR
$6,692 USD
As of October 30, 2026
Save €3,620 EUR (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €11,443 EUR 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
Colour
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: €11,443 EUR|Low: €4,406 EUR|High: €11,443 EUR|Avg: €7,282 EUR
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€4,406 EUR
Retailer 12€5,966 EUR
Retailer 7€6,315 EUR
Retailer 4€6,374 EUR
Retailer 6€6,436 EUR
Retailer 2€6,466 EUR
Retailer 9€6,841 EUR
Retailer 8€6,946 EUR
Retailer 3€7,382 EUR
Retailer 11€7,894 EUR
Retailer 13€8,219 EUR
Retailer 10€9,586 EUR
NZ Jewellers€11,443 EUR

17 data points across 13 retailers

9 retailers€5,966 EUR to €9,586 EUR

B+
Cheapest Retailer
-
€5,966 EUR
$6,692 USD
B+
Retailer 2
-
€6,315 EUR
$7,083 USD
View
B+
Retailer 3
-
€6,436 EUR
£5,684 GBP
View
B+
Retailer 4
-
€6,466 EUR
£5,710 GBP
View
B+
Retailer 5
-
€6,841 EUR
$7,673 USD
View
B
Retailer 6
-
€6,946 EUR
$7,791 USD
View
Retailer 7
-
€7,894 EUR
$8,854 USD
View
Price last confirmed 12 days ago
B
Retailer 8
-
€9,586 EUR
£8,466 GBP
View
Most Expensive
NZ Jewellers
4d10a256-f519-45c9-b7a5-dd871cc9cfb4 · Oct 21
€11,443 EUR
$12,834 USD
View
Price last confirmed 12 days ago
8 more retailers have this diamond
Prices start from €5,966 EURSave up to €3,620 EUR

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
€5,966 EUR