Heart|Natural|GIA

1.51ct D SI2 Heart Natural Diamond

ID • D/SI2 • GIA 3555112856

Certificate GIA 3555112856

Diamond specifications and retailer prices

From £4,022 GBP
$5,389 USD
As of October 31, 2026
Save £2,398 GBP (37%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £7,289 GBP 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 31, 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
Colour
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

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £4,106 GBP|Low: £4,022 GBP|High: £6,497 GBP|Avg: £4,719 GBP|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6£4,022 GBP
Retailer 1£4,106 GBP
Retailer 3£4,216 GBP
Retailer 5£4,358 GBP
Retailer 4£4,762 GBP
Retailer 2£6,420 GBP

42 data points across 6 retailers

12 retailers£4,022 GBP to £6,420 GBP

A
Cheapest Retailer
-
£4,022 GBP
$5,389 USD
Final sale: no returns
A
Retailer 2
-
£4,106 GBP
View
A
Retailer 3
-
£4,216 GBP
View
Retailer 4
-
£4,358 GBP
$5,839 USD
View
Price last confirmed 25 days ago
Retailer 5
-
£4,358 GBP
$5,839 USD
View
Price last confirmed 25 days ago
Retailer 6
-
£4,358 GBP
$5,839 USD
View
Price last confirmed 32 days ago
Retailer 7
-
£4,358 GBP
$5,839 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
£4,762 GBP
€6,077 EUR
View
Retailer 9
-
£5,028 GBP
$6,737 USD
View
Price last confirmed 69 days ago
Retailer 10
-
£5,028 GBP
$6,737 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
£6,420 GBP
View
Most Expensive
NZ Jewellers
73bad57c-9b5f-48e9-b54a-d0843ec0329b · Sep 29
£7,289 GBP
$9,766 USD
View
Price last confirmed 33 days ago
11 more retailers have this diamond
Prices start from £4,022 GBPSave up to £2,398 GBP

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
£4,022 GBP