Heart|Natural|GIA

0.70ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 1549910191

Certificate GIA 1549910191

Diamond specifications and retailer prices

From £583 GBP
As of November 6, 2026
Save £528 GBP (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,910 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.7ct natural heart diamond

This 0.7ct natural heart sits in the half to three-quarter 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 1549910191. Listed at 15 retailers as of November 6, 2026, with a 91% 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

0.70
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle39.7°
OriginNatural
Grading LabGIA
CertificateGIA 1549910191
Dimensions5.34 × 6.19 × 3.69 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
5.34 mm6.19 mm0.70 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1549910191
Side View
Table 56.0%CrownGirdle: THN-THKPavilion 39.7°Culet: NoneDepth 59.7%

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: Nov 6
Current: £813 GBP|Low: £574 GBP|High: £1,452 GBP|Avg: £884 GBP|+1.7%
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
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 14£583 GBP
Retailer 11£699 GBP
Retailer 16£700 GBP
Retailer 10£708 GBP
Retailer 15£710 GBP
Retailer 13£743 GBP
Retailer 9£747 GBP
Retailer 1£813 GBP
Retailer 5£867 GBP
Retailer 4£905 GBP
Retailer 3£956 GBP
Retailer 6£984 GBP
Retailer 8£993 GBP
Retailer 12£1,111 GBP
Retailer 7£1,136 GBP
Retailer 2£1,404 GBP

35 data points across 16 retailers

15 retailers£583 GBP to £1,111 GBP

A
Cheapest Retailer
-
£583 GBP
B+
Retailer 2
-
£699 GBP
View
B+
Retailer 3
-
£700 GBP
View
Final sale: no returns
B+
Retailer 4
-
£708 GBP
View
B+
Retailer 5
-
£710 GBP
View
B+
Retailer 6
-
£743 GBP
View
B+
Retailer 7
-
£747 GBP
View
B+
Retailer 8
-
£813 GBP
View
Retailer 9
-
£956 GBP
View
Price last confirmed 28 days ago
Retailer 10
-
£984 GBP
View
Price last confirmed 29 days ago
Retailer 11
-
£993 GBP
View
Price last confirmed 33 days ago
B
Retailer 12
-
£1,111 GBP
View
Retailer 13
-
£1,136 GBP
View
Price last confirmed 33 days ago
Retailer 14
-
£1,404 GBP
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
53dff686-3758-4c9d-a10e-7c2ba5577516 · Sep 25
£1,910 GBP
$2,557 USD
View
Price last confirmed 42 days ago
14 more retailers have this diamond
Prices start from £583 GBPSave up to £528 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
0.70ct Heart
£583 GBP