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Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 2235669195

Certificate GIA 2235669195

Diamond specifications and retailer prices

From £3,518 GBP
As of November 2, 2026
Save £2,772 GBP (44%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £6,290 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2235669195. Listed at 8 retailers as of October 30, 2026, with prices from £3,518 to £6,290, a £2,772 spread on the same certified stone. NZ Jewellers lists it at £6,290. 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
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.37°
Pavilion angle40.08°
OriginNatural
Grading LabGIA
CertificateGIA 2235669195
Dimensions7.04 × 7.83 × 4.69 mm
L/W Ratio1.11
Top View
7.04 mm7.83 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2235669195
Side View
Table 61.0%Crown 38.37°Girdle: Thick to Very ThickPavilion 40.08°Culet: NoneDepth 59.9%

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 2
Current: £6,290 GBP|Low: £3,439 GBP|High: £6,376 GBP|Avg: £4,269 GBP|-1.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 11£3,439 GBP
Retailer 2£3,518 GBP
Retailer 9£3,536 GBP
Retailer 6£3,761 GBP
Retailer 7£3,761 GBP
Retailer 8£3,791 GBP
Retailer 10£3,856 GBP
Retailer 12£4,153 GBP
Retailer 4£4,162 GBP
Retailer 3£4,248 GBP
Retailer 5£5,990 GBP
NZ Jewellers£6,290 GBP

34 data points across 12 retailers

8 retailers£3,518 GBP to £6,290 GBP

A
Cheapest Retailer
-
£3,518 GBP
A
Retailer 2
-
£3,536 GBP
$4,745 USD
View
A
Retailer 3
-
£3,761 GBP
$5,047 USD
View
A
Retailer 4
-
£3,761 GBP
$5,047 USD
View
Retailer 5
-
£3,791 GBP
A$7,827 AUD
View
Price last confirmed 24 days ago
B+
Retailer 6
-
£3,856 GBP
$5,174 USD
View
B
Retailer 7
-
£5,990 GBP
View
Most Expensive
B
NZ Jewellers
acbcf805-635b-40e7-9d17-ba5213ca6575 · Oct 30
£6,290 GBP
$8,441 USD
View
7 more retailers have this diamond
Prices start from £3,518 GBPSave up to £2,772 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
£3,518 GBP