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Heart|Natural|GIA

1.56ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 2544738463

Certificate GIA 2544738463

Diamond specifications and retailer prices

From £2,521 GBP
As of November 6, 2026
Save £465 GBP (16%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,986 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.56ct natural heart diamond

This 1.56ct 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 2544738463. Listed at 7 retailers as of November 5, 2026, with prices from £2,521 to £2,986, a £465 spread on the same certified stone. Blue Nile lists it at £2,986. 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

1.56
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2544738463
Dimensions7.26 × 8.06 × 4.71 mm
L/W Ratio1.11
Top View
7.26 mm8.06 mm1.56 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2544738463
Side View
Table 54.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.4%

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: £2,986 GBP|Low: £2,303 GBP|High: £3,594 GBP|Avg: £2,807 GBP|-16.9%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£2,521 GBP
Retailer 4£2,566 GBP
Retailer 7£2,608 GBP
Retailer 2£2,624 GBP
Retailer 6£2,691 GBP
Retailer 3£2,692 GBP
Blue Nile£2,986 GBP

42 data points across 7 retailers

7 retailers£2,521 GBP to £2,986 GBP

A
Cheapest Retailer
-
£2,521 GBP
A
Retailer 2
-
£2,566 GBP
View
Final sale: no returns
A
Retailer 3
-
£2,608 GBP
View
A
Retailer 4
-
£2,624 GBP
View
A
Retailer 5
-
£2,691 GBP
View
A
Retailer 6
-
£2,692 GBP
View
Most Expensive
A
Blue Nile
28420041 · Nov 5
£2,986 GBP
$3,997 USD
View
6 more retailers have this diamond
Prices start from £2,521 GBPSave up to £465 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
1.56ct Heart
£2,521 GBP