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Heart|Natural|GIA

1.51ct G SI2 Heart Natural Diamond

EX • G/SI2 • GIA 2554044527

Certificate GIA 2554044527

Diamond specifications and retailer prices

From £2,245 GBP
HK$23,500 HKD
As of November 1, 2026
Save £2,745 GBP (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,493 GBP at NZ Jewellers · As of September 25, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554044527. Listed at 13 retailers as of November 1, 2026, with a 122% 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2554044527
Dimensions6.99 × 7.94 × 4.59 mm
L/W Ratio1.14
Top View
6.99 mm7.94 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2554044527
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,535 GBP|Low: £2,245 GBP|High: £5,336 GBP|Avg: £3,258 GBP|+2.6%
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 2, 2026
Retailer 9£2,245 GBP
Retailer 3£2,283 GBP
Retailer 6£2,403 GBP
Retailer 12£2,455 GBP
Retailer 1£2,535 GBP
Retailer 8£2,688 GBP
Retailer 7£2,746 GBP
Retailer 5£2,894 GBP
Retailer 4£3,366 GBP
Retailer 10£3,881 GBP
Retailer 2£4,755 GBP
Retailer 11£4,990 GBP

35 data points across 12 retailers

13 retailers£2,245 GBP to £4,990 GBP

A
Cheapest Retailer
-
£2,245 GBP
HK$23,500 HKD
A
Retailer 2
-
£2,283 GBP
$3,059 USD
View
A
Retailer 3
-
£2,403 GBP
$3,220 USD
View
A
Retailer 4
-
£2,455 GBP
$3,290 USD
View
A
Retailer 5
-
£2,535 GBP
$3,397 USD
View
Final sale: no returns
A
Retailer 6
-
£2,688 GBP
A$5,542 AUD
View
A
Retailer 7
-
£2,746 GBP
$3,680 USD
View
A
Retailer 8
-
£2,894 GBP
View
A
Retailer 9
-
£3,366 GBP
A$6,938 AUD
View
B+
Retailer 10
-
£3,881 GBP
$5,200 USD
View
Retailer 11
-
£4,755 GBP
$6,372 USD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£4,990 GBP
View
Most Expensive
NZ Jewellers
dbcde0c6-ecd5-4e53-b75b-bbe4c5d8e081 · Sep 25
£5,493 GBP
$7,360 USD
View
Price last confirmed 38 days ago
12 more retailers have this diamond
Prices start from £2,245 GBPSave up to £2,745 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
1.51ct Heart
£2,245 GBP