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Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 1518041165

Certificate GIA 1518041165

Diamond specifications and retailer prices

From £2,075 GBP
$2,785 USD
As of October 31, 2026
Save £1,964 GBP (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,039 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1518041165. Listed at 14 retailers as of October 30, 2026, with prices from £2,075 to £4,039, a £1,964 spread on the same certified stone. NZ Jewellers lists it at £4,039. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36.41°
Pavilion angle41.03°
OriginNatural
Grading LabGIA
CertificateGIA 1518041165
Dimensions7.06 × 7.92 × 4.64 mm
L/W Ratio1.12
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal
Top View
7.06 mm7.92 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1518041165
Side View
Table 59.0%Crown 36.41°Girdle: Slightly ThickPavilion 41.03°Culet: NoneDepth 58.6%

Caratlytics Score

How it works →
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: £4,039 GBP|Low: £1,724 GBP|High: £4,162 GBP|Avg: £2,727 GBP|-3.0%
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
November 2, 2026
Retailer 11£2,075 GBP
Retailer 3£2,139 GBP
Retailer 10£2,218 GBP
Retailer 6£2,246 GBP
Retailer 4£2,389 GBP
Retailer 5£2,389 GBP
Retailer 2£2,407 GBP
Retailer 7£2,422 GBP
Retailer 8£2,425 GBP
Retailer 13£2,497 GBP
Retailer 12£2,674 GBP
Retailer 9£3,876 GBP
NZ Jewellers£4,039 GBP

37 data points across 13 retailers

14 retailers£2,075 GBP to £4,039 GBP

A
Cheapest Retailer
-
£2,075 GBP
$2,785 USD
A
Retailer 2
-
£2,139 GBP
$2,870 USD
View
Final sale: no returns
A
Retailer 3
-
£2,218 GBP
$2,977 USD
View
A
Retailer 4
-
£2,246 GBP
View
A
Retailer 5
-
£2,389 GBP
$3,206 USD
View
A
Retailer 6
-
£2,389 GBP
$3,206 USD
View
A
Retailer 7
-
£2,407 GBP
$3,230 USD
View
A
Retailer 8
-
£2,422 GBP
View
A
Retailer 9
-
£2,425 GBP
$3,254 USD
View
A
Retailer 10
-
£2,497 GBP
$3,351 USD
View
A
Retailer 11
-
£2,515 GBP
$3,375 USD
View
A
Retailer 12
-
£2,674 GBP
$3,589 USD
View
B+
Retailer 13
-
£3,876 GBP
View
Most Expensive
B+
NZ Jewellers
3ef3aafe-6508-4d86-bef5-7e30bf4a7775 · Oct 30
£4,039 GBP
$5,420 USD
View
13 more retailers have this diamond
Prices start from £2,075 GBPSave up to £1,964 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
£2,075 GBP