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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

ID • H/SI1 • GIA 7558902646

Certificate GIA 7558902646

Diamond specifications and retailer prices

From £3,040 GBP
$4,080 USD
As of November 1, 2026
Save £3,996 GBP (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £7,037 GBP at NZ Jewellers · As of October 30, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7558902646. Listed at 17 retailers as of October 30, 2026, with prices from £3,040 to £7,037, a £3,996 spread on the same certified stone. NZ Jewellers lists it at £7,037. 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
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7558902646
Dimensions8.10 × 6.90 × 4.73 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
8.10 mm6.90 mm1.51 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558902646
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.4%

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: £7,037 GBP|Low: £3,040 GBP|High: £7,037 GBP|Avg: £4,364 GBP|+1.0%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 7£3,040 GBP
Retailer 8£3,195 GBP
Retailer 9£3,756 GBP
Retailer 15£3,812 GBP
Retailer 16£3,812 GBP
Retailer 17£3,812 GBP
Retailer 11£3,814 GBP
Retailer 2£3,964 GBP
Retailer 18£4,005 GBP
Retailer 4£4,270 GBP
Retailer 5£4,270 GBP
Retailer 10£4,317 GBP
Retailer 14£4,398 GBP
Retailer 6£4,412 GBP
Retailer 19£4,642 GBP
Retailer 12£4,760 GBP
Retailer 13£5,172 GBP
Retailer 3£6,736 GBP
NZ Jewellers£7,037 GBP

29 data points across 19 retailers

17 retailers£3,040 GBP to £7,037 GBP

A
Cheapest Retailer
-
£3,040 GBP
$4,080 USD
A
Retailer 2
-
£3,195 GBP
$4,287 USD
View
B+
Retailer 3
-
£3,756 GBP
$5,040 USD
View
B+
Retailer 4
-
£3,812 GBP
$5,115 USD
View
B+
Retailer 5
-
£3,812 GBP
$5,115 USD
View
B+
Retailer 6
-
£3,964 GBP
View
B+
Retailer 7
-
£4,005 GBP
$5,375 USD
View
B+
Retailer 8
-
£4,178 GBP
$5,606 USD
View
B+
Retailer 9
-
£4,270 GBP
$5,730 USD
View
B+
Retailer 10
-
£4,270 GBP
$5,730 USD
View
B+
Retailer 11
-
£4,317 GBP
$5,794 USD
View
B
Retailer 12
-
£4,398 GBP
$5,902 USD
View
B
Retailer 13
-
£4,412 GBP
$5,920 USD
View
B+
Retailer 14
-
£4,760 GBP
€6,083 EUR
View
B
Retailer 15
-
£5,172 GBP
ZAR 112,114 ZAR
View
B
Retailer 16
-
£6,736 GBP
View
Most Expensive
B
NZ Jewellers
e47d9d5f-ffb1-457d-896a-4ff81f37f967 · Oct 30
£7,037 GBP
$9,443 USD
View
16 more retailers have this diamond
Prices start from £3,040 GBPSave up to £3,996 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
£3,040 GBP