Heart|Natural|GIA

1.54ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 5231681789

Certificate GIA 5231681789

Diamond specifications and retailer prices

From £3,041 GBP
As of November 2, 2026
Save £2,582 GBP (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £5,622 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.54ct natural heart diamond

This 1.54ct 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 5231681789. Listed at 8 retailers as of October 30, 2026, with prices from £3,041 to £5,622, a £2,582 spread on the same certified stone. NZ Jewellers lists it at £5,622. 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

1.54
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.71°
Pavilion angle42.28°
OriginNatural
Grading LabGIA
CertificateGIA 5231681789
Dimensions7.15 × 7.96 × 4.82 mm
L/W Ratio1.11
Top View
7.15 mm7.96 mm1.54 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231681789
Side View
Table 61.0%Crown 36.71°Girdle: STK-THKPavilion 42.28°Culet: NoneDepth 60.6%

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 2
Current: £5,622 GBP|Low: £3,000 GBP|High: £5,796 GBP|Avg: £3,795 GBP|-3.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9£3,000 GBP
Retailer 2£3,041 GBP
Retailer 6£3,063 GBP
Retailer 4£3,227 GBP
Retailer 5£3,227 GBP
Retailer 7£3,332 GBP
Retailer 8£3,549 GBP
Retailer 10£3,631 GBP
Retailer 3£5,140 GBP
NZ Jewellers£5,622 GBP

35 data points across 10 retailers

8 retailers£3,041 GBP to £5,622 GBP

A
Cheapest Retailer
-
£3,041 GBP
A
Retailer 2
-
£3,063 GBP
$4,110 USD
View
A
Retailer 3
-
£3,227 GBP
$4,331 USD
View
A
Retailer 4
-
£3,227 GBP
$4,331 USD
View
A
Retailer 5
-
£3,332 GBP
$4,471 USD
View
Retailer 6
-
£3,549 GBP
A$7,326 AUD
View
Price last confirmed 23 days ago
B+
Retailer 7
-
£5,140 GBP
View
Most Expensive
B+
NZ Jewellers
a507d41b-ac5a-4fee-a244-4b369db3e023 · Oct 30
£5,622 GBP
$7,545 USD
View
7 more retailers have this diamond
Prices start from £3,041 GBPSave up to £2,582 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
1.54ct Heart
£3,041 GBP