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Heart|Natural|GIA

1.53ct H SI1 Heart Natural Diamond

VG • H/SI1 • GIA 3465437306

Certificate GIA 3465437306

Diamond specifications and retailer prices

From £3,231 GBP
As of November 6, 2026
Save £3,183 GBP (50%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £7,040 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.53ct natural heart diamond

This 1.53ct 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 3465437306. Listed at 18 retailers as of November 4, 2026, with a 99% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.53
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.9°
OriginNatural
Grading LabGIA
CertificateGIA 3465437306
Dimensions8.27 × 7.22 × 3.98 mm
L/W Ratio1.15
Top View
8.27 mm7.22 mm1.53 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3465437306
Side View
Table 61.0%Crown 34.5°Girdle: MED-THKPavilion 40.9°Culet: NoneDepth 55.1%

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: £6,754 GBP|Low: £3,231 GBP|High: £7,040 GBP|Avg: £4,423 GBP|-4.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 3£3,231 GBP
Retailer 9£3,408 GBP
Retailer 7£3,522 GBP
Retailer 13£3,727 GBP
Retailer 12£3,784 GBP
Retailer 2£3,878 GBP
Retailer 4£4,038 GBP
Retailer 11£4,038 GBP
Retailer 15£4,038 GBP
Retailer 14£4,070 GBP
Retailer 6£4,152 GBP
Retailer 5£4,659 GBP
Retailer 8£4,926 GBP
Retailer 10£6,414 GBP
NZ Jewellers£6,754 GBP

45 data points across 15 retailers

18 retailers£3,231 GBP to £6,414 GBP

A
Cheapest Retailer
-
£3,231 GBP
A
Retailer 2
-
£3,408 GBP
View
B+
Retailer 3
-
£3,522 GBP
View
B+
Retailer 4
-
£3,727 GBP
View
Final sale: no returns
B+
Retailer 5
-
£3,784 GBP
View
B+
Retailer 6
-
£3,878 GBP
View
Retailer 7
-
£4,038 GBP
View
Price last confirmed 13 days ago
Retailer 8
-
£4,038 GBP
View
Price last confirmed 12 days ago
Retailer 9
-
£4,038 GBP
View
Price last confirmed 13 days ago
Retailer 10
-
£4,070 GBP
View
Price last confirmed 29 days ago
B+
Retailer 11
-
£4,152 GBP
View
Retailer 12
-
£4,209 GBP
View
Price last confirmed 40 days ago
Retailer 13
-
£4,659 GBP
View
Price last confirmed 11 days ago
Retailer 14
-
£4,857 GBP
View
Price last confirmed 39 days ago
B
Retailer 15
-
£4,926 GBP
View
B
Retailer 16
-
£6,414 GBP
View
Retailer 17
-
£6,754 GBP
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
73597bae-de2b-42d4-b96f-97ac79deb364 · Sep 28
£7,040 GBP
$9,423 USD
View
Price last confirmed 39 days ago
17 more retailers have this diamond
Prices start from £3,231 GBPSave up to £3,183 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
1.53ct Heart
£3,231 GBP