CaratHunter
Plans
Heart|Natural|GIA

1.51ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 2436211625

Certificate GIA 2436211625

Diamond specifications and retailer prices

From £3,035 GBP
$4,066 USD
As of October 30, 2026
Save £3,643 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £6,678 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2436211625. Listed at 19 retailers as of October 28, 2026, with prices from £3,035 to £6,678, a £3,643 spread on the same certified stone. Queensmith lists it at £6,678. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.11°
Pavilion angle31.22°
OriginNatural
Grading LabGIA
CertificateGIA 2436211625
Dimensions6.51 × 6.17 × 4.30 mm
L/W Ratio1.06
Top View
6.51 mm6.17 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2436211625
Side View
Table 60.0%Crown 38.11°Girdle: ThickPavilion 31.22°Culet: NoneDepth 69.7%

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 30
Current: £6,678 GBP|Low: £2,944 GBP|High: £6,701 GBP|Avg: £4,126 GBP|+2.5%
Queensmith
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
October 30, 2026
Retailer 5£3,035 GBP
Retailer 13£3,154 GBP
Retailer 14£3,211 GBP
Retailer 6£3,267 GBP
Retailer 4£3,288 GBP
Retailer 12£3,479 GBP
Retailer 2£3,604 GBP
Retailer 8£3,682 GBP
Retailer 7£3,833 GBP
Retailer 3£3,871 GBP
Retailer 10£4,339 GBP
Retailer 11£4,676 GBP
Retailer 9£6,149 GBP
Queensmith£6,678 GBP

35 data points across 14 retailers

19 retailers£3,035 GBP to £6,678 GBP

A
Cheapest Retailer
-
£3,035 GBP
$4,066 USD
A
Retailer 2
-
£3,154 GBP
$4,226 USD
View
A
Retailer 3
-
£3,211 GBP
$4,302 USD
View
Final sale: no returns
A
Retailer 4
-
£3,267 GBP
$4,378 USD
View
A
Retailer 5
-
£3,288 GBP
$4,405 USD
View
A
Retailer 6
-
£3,453 GBP
$4,627 USD
View
A
Retailer 7
-
£3,479 GBP
$4,661 USD
View
A
Retailer 8
-
£3,604 GBP
View
A
Retailer 9
-
£3,682 GBP
$4,933 USD
View
A
Retailer 10
-
£3,754 GBP
$5,030 USD
View
A
Retailer 11
-
£3,754 GBP
$5,030 USD
View
A
Retailer 12
-
£3,833 GBP
View
Retailer 13
-
£3,871 GBP
A$7,980 AUD
View
Price last confirmed 20 days ago
A
Retailer 14
-
£3,881 GBP
$5,200 USD
View
Retailer 15
-
£4,238 GBP
$5,679 USD
View
Price last confirmed 15 days ago
A
Retailer 16
-
£4,339 GBP
€5,537 EUR
View
B+
Retailer 17
-
£4,676 GBP
ZAR 101,217 ZAR
View
B+
Retailer 18
-
£6,149 GBP
View
Most Expensive
B
Queensmith
2436211625 · Oct 28
£6,678 GBP
View
18 more retailers have this diamond
Prices start from £3,035 GBPSave up to £3,643 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
£3,035 GBP