Heart|Natural|GIA

1.50ct G SI1 Heart Natural Diamond

ID • G/SI1 • GIA 6555867581

Certificate GIA 6555867581

Diamond specifications and retailer prices

From £2,121 GBP
HK$22,200 HKD
As of October 26, 2026
Save £1,395 GBP (40%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,724 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

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 6555867581. Listed at 14 retailers as of October 26, 2026, with a 66% 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

1.50
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6555867581
Dimensions6.77 × 7.81 × 4.66 mm
L/W Ratio1.15
Girdle conditionFaceted
Top View
6.77 mm7.81 mm1.50 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6555867581
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.6%

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: Oct 26
Current: £2,544 GBP|Low: £2,121 GBP|High: £5,414 GBP|Avg: £3,337 GBP|-6.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 24, 2026
Retailer 10£2,121 GBP
Retailer 1£2,544 GBP
Retailer 9£2,632 GBP
Retailer 4£2,695 GBP
Retailer 6£2,702 GBP
Retailer 8£2,731 GBP
Retailer 11£2,873 GBP
Retailer 13£2,959 GBP
Retailer 3£3,261 GBP
Retailer 5£3,534 GBP
Retailer 7£3,757 GBP
Retailer 12£4,620 GBP
Retailer 2£5,234 GBP

28 data points across 13 retailers

14 retailers£2,121 GBP to £3,516 GBP

A
Cheapest Retailer
-
£2,121 GBP
HK$22,200 HKD
Retailer 2
-
£2,544 GBP
€3,246 EUR
View
Price last confirmed 8 days ago
Retailer 3
-
£2,632 GBP
$3,526 USD
View
Price last confirmed 7 days ago
Retailer 4
-
£2,695 GBP
SGD 4,880 SGD
View
Price last confirmed 9 days ago
Retailer 5
-
£2,702 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£2,731 GBP
$3,659 USD
View
Price last confirmed 10 days ago
Retailer 7
-
£2,959 GBP
$3,965 USD
View
Price last confirmed 8 days ago
Retailer 8
-
£3,261 GBP
$4,370 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£3,516 GBP
A$7,248 AUD
View
Retailer 10
-
£3,534 GBP
A$7,285 AUD
View
Price last confirmed 23 days ago
Retailer 11
-
£3,757 GBP
ZAR 81,320 ZAR
View
Price last confirmed 10 days ago
Retailer 12
-
£4,620 GBP
$6,191 USD
View
Price last confirmed 9 days ago
Retailer 13
-
£5,234 GBP
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
ec40fdf4-ffb8-4b8e-8a96-2fdf608cb0c2 · Sep 25
£5,724 GBP
$7,669 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from £2,121 GBPSave up to £1,395 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
£2,121 GBP