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Heart|Natural|GIA

1.51ct G SI2 Heart Natural Diamond

EX • G/SI2 • GIA 6545994583

Certificate GIA 6545994583

Diamond specifications and retailer prices

From £3,366 GBP
A$6,938 AUD
As of November 2, 2026
10 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 6545994583. Listed at 10 retailers as of November 2, 2026. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545994583
Dimensions6.89 × 7.69 × 4.89 mm
L/W Ratio1.12
Top View
6.89 mm7.69 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545994583
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: £2,998 GBP|Low: £2,293 GBP|High: £5,336 GBP|Avg: £3,201 GBP|-6.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 22, 2026
Retailer 5£2,293 GBP
Retailer 9£2,317 GBP
Retailer 3£2,479 GBP
Retailer 4£2,492 GBP
Retailer 6£2,495 GBP
Retailer 8£2,821 GBP
Retailer 1£2,998 GBP
Retailer 2£3,366 GBP
Retailer 7£4,825 GBP
Retailer 10£5,017 GBP

28 data points across 10 retailers

10 retailers

Retailer 1
-
£2,293 GBP
HK$24,000 HKD
Price last confirmed 9 days ago
Retailer 2
-
£2,317 GBP
$3,105 USD
View
Price last confirmed 11 days ago
Retailer 3
-
£2,479 GBP
$3,321 USD
View
Price last confirmed 11 days ago
Retailer 4
-
£2,492 GBP
$3,339 USD
View
Price last confirmed 12 days ago
Retailer 5
-
£2,821 GBP
$3,780 USD
View
Price last confirmed 11 days ago
Retailer 6
-
£2,998 GBP
View
Price last confirmed 11 days ago
A
Retailer 7
-
£3,366 GBP
A$6,938 AUD
View
Retailer 8
-
£4,825 GBP
$6,465 USD
View
Price last confirmed 11 days ago
Retailer 9
-
£5,017 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
44eb55d0-d0d8-47b2-a6bc-d8415d04e50f · Sep 25
£5,493 GBP
$7,360 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from £3,366 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
£3,366 GBP