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Heart|Natural|GIA

1.50ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 2556323952

Certificate GIA 2556323952

Diamond specifications and retailer prices

From £3,003 GBP
As of November 6, 2026
Save £582 GBP (16%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,585 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded G 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 2556323952. Listed at 7 retailers as of November 5, 2026, with prices from £3,003 to £3,585, a £582 spread on the same certified stone. Blue Nile lists it at £3,585. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556323952
Dimensions7.06 × 7.94 × 4.70 mm
L/W Ratio1.12
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Indented Natural, Needle
Top View
7.06 mm7.94 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556323952
Side View
Table 58.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.1%

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: Nov 6
Current: £3,585 GBP|Low: £2,782 GBP|High: £4,097 GBP|Avg: £3,361 GBP|-12.5%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£3,003 GBP
Retailer 4£3,106 GBP
Retailer 2£3,127 GBP
Retailer 7£3,162 GBP
Retailer 3£3,227 GBP
Retailer 6£3,245 GBP
Blue Nile£3,585 GBP

42 data points across 7 retailers

7 retailers£3,003 GBP to £3,585 GBP

A
Cheapest Retailer
-
£3,003 GBP
A
Retailer 2
-
£3,106 GBP
View
Final sale: no returns
A
Retailer 3
-
£3,127 GBP
View
A
Retailer 4
-
£3,162 GBP
View
A
Retailer 5
-
£3,227 GBP
View
A
Retailer 6
-
£3,245 GBP
View
Most Expensive
A
Blue Nile
29193047 · Nov 5
£3,585 GBP
$4,798 USD
View
6 more retailers have this diamond
Prices start from £3,003 GBPSave up to £582 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
1.50ct Heart
£3,003 GBP