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Heart|Natural|GIA

3.00ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 1559971070

Certificate GIA 1559971070

Diamond specifications and retailer prices

From £18,317 GBP
SGD 32,963 SGD
As of October 28, 2026
Save £9,807 GBP (35%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £28,124 GBP at Diamonds Direct · As of October 29, 2026
View at Diamonds Direct

About this 3ct natural heart diamond

This 3ct natural heart sits in the three to five 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 1559971070. Listed at 8 retailers as of October 28, 2026, with prices from £18,317 to £28,124, a £9,807 spread on the same certified stone. Diamonds Direct lists it at £28,124. 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

3.00
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.85°
Pavilion angle39.2°
OriginNatural
Grading LabGIA
CertificateGIA 1559971070
Dimensions10.11 × 8.91 × 6.02 mm
L/W Ratio1.13
Culet sizeNone
Top View
10.11 mm8.91 mm3.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1559971070
Side View
Table 57.0%Crown 36.85°Girdle: MED-THKPavilion 39.2°Culet: NDepth 59.5%

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 28
Current: £28,124 GBP|Low: £18,317 GBP|High: £32,394 GBP|Avg: £23,716 GBP|-13.2%
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 3£18,317 GBP
Retailer 2£19,575 GBP
Retailer 4£19,993 GBP
Retailer 8£20,542 GBP
Retailer 6£20,552 GBP
Retailer 5£20,654 GBP
Retailer 7£24,801 GBP
Diamonds Direct£28,124 GBP

38 data points across 8 retailers

8 retailers£18,317 GBP to £28,124 GBP

A
Cheapest Retailer
-
£18,317 GBP
SGD 32,963 SGD
A
Retailer 2
-
£19,575 GBP
View
A
Retailer 3
-
£19,993 GBP
$26,624 USD
View
A
Retailer 4
-
£20,542 GBP
$27,355 USD
View
A
Retailer 5
-
£20,552 GBP
$27,369 USD
View
A
Retailer 6
-
£20,654 GBP
SGD 37,168 SGD
View
B+
Retailer 7
-
£24,801 GBP
$33,027 USD
View
Most Expensive
B+
Diamonds Direct
1089575 · Oct 29
£28,124 GBP
$37,452 USD
View
7 more retailers have this diamond
Prices start from £18,317 GBPSave up to £9,807 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
3.00ct Heart
£18,317 GBP