CaratHunter
Plans
Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 1545236695

Certificate GIA 1545236695

Diamond specifications and retailer prices

From £2,294 GBP
$3,078 USD
As of November 1, 2026
Save £2,386 GBP (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,680 GBP at NZ Jewellers · As of October 30, 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 H 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 1545236695. Listed at 16 retailers as of October 30, 2026, with prices from £2,294 to £4,680, a £2,386 spread on the same certified stone. NZ Jewellers lists it at £4,680. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.98°
Pavilion angle43.02°
OriginNatural
Grading LabGIA
CertificateGIA 1545236695
Dimensions7.74 × 7.12 × 4.79 mm
L/W Ratio1.09
Culet sizeNone
Key to symbols
Crystal, Twinning Wisp, Feather, Needle
Top View
7.74 mm7.12 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545236695
Side View
Table 59.0%Crown 36.98°Girdle: Slightly ThickPavilion 43.02°Culet: NoneDepth 61.9%

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: £4,680 GBP|Low: £1,999 GBP|High: £4,823 GBP|Avg: £3,135 GBP|-3.0%
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 2, 2026
Retailer 15£2,294 GBP
Retailer 13£2,385 GBP
Retailer 3£2,479 GBP
Retailer 12£2,542 GBP
Retailer 2£2,602 GBP
Retailer 4£2,768 GBP
Retailer 6£2,768 GBP
Retailer 10£2,794 GBP
Retailer 9£2,807 GBP
Retailer 5£2,875 GBP
Retailer 7£2,903 GBP
Retailer 14£3,099 GBP
Retailer 8£3,145 GBP
Retailer 11£4,492 GBP
NZ Jewellers£4,680 GBP

38 data points across 15 retailers

16 retailers£2,294 GBP to £4,680 GBP

A
Cheapest Retailer
-
£2,294 GBP
$3,078 USD
A
Retailer 2
-
£2,385 GBP
$3,200 USD
View
A
Retailer 3
-
£2,479 GBP
$3,326 USD
View
Final sale: no returns
A
Retailer 4
-
£2,542 GBP
$3,411 USD
View
A
Retailer 5
-
£2,602 GBP
View
A
Retailer 6
-
£2,768 GBP
$3,715 USD
View
Retailer 7
-
£2,768 GBP
$3,715 USD
View
Price last confirmed 17 days ago
A
Retailer 8
-
£2,768 GBP
$3,715 USD
View
A
Retailer 9
-
£2,794 GBP
$3,750 USD
View
A
Retailer 10
-
£2,807 GBP
View
A
Retailer 11
-
£2,875 GBP
$3,858 USD
View
A
Retailer 12
-
£2,903 GBP
$3,895 USD
View
A
Retailer 13
-
£3,099 GBP
$4,159 USD
View
A
Retailer 14
-
£3,145 GBP
€4,019 EUR
View
B
Retailer 15
-
£4,492 GBP
View
Most Expensive
B+
NZ Jewellers
428ed931-ddf7-41ee-abfb-fdfe9752e5c1 · Oct 30
£4,680 GBP
$6,280 USD
View
15 more retailers have this diamond
Prices start from £2,294 GBPSave up to £2,386 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
£2,294 GBP