Heart|Natural|GIA

1.50ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6315998437

Certificate GIA 6315998437

Diamond specifications and retailer prices

From £7,434 GBP
As of November 5, 2026
Save £2,591 GBP (26%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £13,367 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct 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 6315998437. Listed at 22 retailers as of November 5, 2026, with a 35% 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

1.50
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6315998437
Dimensions7.08 × 7.61 × 4.31 mm
L/W Ratio1.07
Top View
7.08 mm7.61 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6315998437
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 56.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £8,310 GBP|Low: £8,019 GBP|High: £12,676 GBP|Avg: £9,629 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£8,019 GBP
Retailer 9£8,019 GBP
Retailer 1£8,310 GBP
Retailer 3£8,583 GBP
Retailer 6£8,714 GBP
Retailer 8£8,822 GBP
Retailer 2£9,629 GBP
Retailer 4£11,700 GBP
Retailer 5£12,491 GBP

45 data points across 9 retailers

22 retailers£7,434 GBP to £10,025 GBP

B
Cheapest Retailer
-
£7,434 GBP
B
Retailer 2
-
£7,440 GBP
View
B
Retailer 3
-
£7,668 GBP
View
B
Retailer 4
-
£7,919 GBP
View
Retailer 5
-
£8,019 GBP
View
Price last confirmed 9 days ago
B
Retailer 6
-
£8,019 GBP
View
Final sale: no returns
B
Retailer 7
-
£8,087 GBP
View
Retailer 8
-
£8,310 GBP
View
B
Retailer 9
-
£8,583 GBP
View
B
Retailer 10
-
£8,688 GBP
View
Retailer 11
-
£8,714 GBP
View
Price last confirmed 15 days ago
B
Retailer 12
-
£8,822 GBP
View
B
Retailer 13
-
£9,269 GBP
View
B
Retailer 14
-
£9,361 GBP
View
B
Retailer 15
-
£9,361 GBP
View
B
Retailer 16
-
£9,629 GBP
View
B
Retailer 17
-
£9,675 GBP
View
B
Retailer 18
-
£10,025 GBP
View
Retailer 19
-
£10,551 GBP
View
Price last confirmed 15 days ago
Retailer 20
-
£11,700 GBP
View
Price under review
Retailer 21
-
£12,491 GBP
View
Price under review
Most Expensive
NZ Jewellers
934d253d-5e40-4182-a9c7-06b47d165805 · Nov 5
£13,367 GBP
$17,891 USD
View
Price under review
21 more retailers have this diamond
Prices start from £7,434 GBPSave up to £2,591 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
1.50ct Heart
£7,434 GBP