Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 1189095050

Certificate GIA 1189095050

Diamond specifications and retailer prices

From £5,008 GBP
As of November 5, 2026
Save £1,413 GBP (22%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £11,293 GBP at NZ Jewellers · As of September 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1189095050. Listed at 10 retailers as of November 5, 2026, with a 28% 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1189095050
Dimensions8.03 × 7.28 × 4.00 mm
L/W Ratio1.10
Top View
8.03 mm7.28 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1189095050
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 55.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £6,421 GBP|Low: £5,008 GBP|High: £9,522 GBP|Avg: £6,344 GBP|+6.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 3£5,008 GBP
Retailer 4£5,123 GBP
Retailer 10£5,175 GBP
Retailer 5£5,263 GBP
Retailer 8£5,287 GBP
Retailer 2£6,015 GBP
Retailer 1£6,421 GBP
Retailer 9£6,439 GBP
Retailer 12£7,058 GBP
Retailer 6£7,314 GBP
Retailer 11£7,434 GBP
Retailer 7£9,497 GBP

36 data points across 12 retailers

10 retailers£5,008 GBP to £6,421 GBP

B+
Cheapest Retailer
-
£5,008 GBP
B+
Retailer 2
-
£5,330 GBP
View
Retailer 3
-
£5,646 GBP
View
Price last confirmed 30 days ago
Retailer 4
-
£6,117 GBP
View
Price last confirmed 30 days ago
Retailer 5
-
£6,211 GBP
View
Price last confirmed 37 days ago
B
Retailer 6
-
£6,421 GBP
View
Retailer 7
-
£7,058 GBP
View
Price last confirmed 39 days ago
Retailer 8
-
£7,434 GBP
View
Price last confirmed 30 days ago
Retailer 9
-
£9,497 GBP
View
Price last confirmed 30 days ago
Most Expensive
NZ Jewellers
28917ac2-67af-47a1-865a-d4f4dcb9d610 · Sep 30
£11,293 GBP
$15,115 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from £5,008 GBPSave up to £1,413 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.

B+
1.51ct Heart
£5,008 GBP